Øyvind Weiby Gregersen

Om

Mitt arbeid ved NTNU

Jeg er dekan for ved Fakultet for Naturvitenskap. Før jeg ble dekan har jeg jobbet som prodekan for utdanning ved fakultetet, instituttleder ved Institutt for kjemisk prosessteknologi og professor innen papirteknologi og papirfysikk. Forskningen min ligger innen med papirfysikk, mekanisk masse produksjon og produksjon og modifikasjon av mikrofibrillær cellulose. Det meste av forskningen skjer i nært samarbeid med Papir og fiberinstituttet (RISE-PFI). I samarbeid med en forskningsgruppe ved Midtuniversitetet har jeg startet spin off selskapet Collimated Chipping Technology, CCT som jobber med forbedret flishugging.

Lenker:

Publikasjoner

2021

Jahan, Zaib; Bilal, Muhammad; Gul, Saeed; Sher, Farooq; Kakar, Salik Javed; Hagg, May-Britt; Gregersen, Øyvind Weiby. (2021) Mimic Enzyme Based Cellulose Nanocrystals/PVA Nanocomposite Membranes for Enrichment of Biogas as a Natural Gas Substitute. Journal of Polymers and the Environment. volum 29 (8).
Vitenskapelig artikkel

2020

Helberg, Ragne M Lilleby; Torstensen, Jonathan Økland; Dai, Zhongde; Janakiram, Saravanan; Chinga-Carrasco, Gary; Gregersen, Øyvind Weiby; Syverud, Kristin; Deng, Liyuan. (2020) Nanocomposite membranes with high-charge and size-screened phosphorylated nanocellulose fibrils for CO2 separation. Green Energy & Environment. volum 6 (4).
Vitenskapelig artikkel
Niazi, Muhammad Bilal K.; Jahan, Zaib; Arooj, Ahmed; Uzair, Bushra; Mukhtar, Ahmad; Gregersen, Øyvind Weiby. (2020) Mechanical and Thermal Properties of Carboxymethyl fibers (CMF)/PVA based nanocomposite membranes. Journal of Industrial and Engineering Chemistry. volum 90.
Vitenskapelig artikkel
Niazi, Muhammad Bilal Khan; Jahan, Zaib; Ahmed, Arooj; Rafiq, Sikander; Jamil, Farrukh; Gregersen, Øyvind Weiby. (2020) Effect of Zn-Cyclen Mimic Enzyme on Mechanical, Thermal and Swelling Properties of Cellulose Nanocrystals/PVA Nanocomposite Membranes. Journal of Polymers and the Environment. volum 28 (7).
Vitenskapelig artikkel

2019

Ottesen, Vegar; Larsson, Per Tomas; Chinga-Carrasco, Gary; Syverud, Kristin; Gregersen, Øyvind Weiby. (2019) Mechanical properties of cellulose nanofibril films: effects of crystallinity and its modification by treatment with liquid anhydrous ammonia. Cellulose. volum 26 (11).
Vitenskapelig artikkel
Jahan, Zaib; Niazi, Muhammad Bilal Khan; Hagg, May-Britt; Gregersen, Øyvind Weiby; Hussain, Arshad. (2019) Phosphorylated nanocellulose fibrils/PVA nanocomposite membranes for biogas upgrading at higher pressure. Separation science and technology (Print).
Vitenskapelig artikkel
Torstensen, Jonathan Økland; Helberg, Ragne M Lilleby; Deng, Liyuan; Gregersen, Øyvind Weiby; Syverud, Kristin. (2019) PVA/nanocellulose nanocomposite membranes for CO2 separation from flue gas. International Journal of Greenhouse Gas Control. volum 81.
Vitenskapelig artikkel

2018

Jahan, Zaib; Niazi, Muhammad Bilal Khan; Gregersen, Øyvind Weiby. (2018) Mechanical, thermal and swelling properties of cellulose nanocrystals/PVA nanocomposites membranes. Journal of Industrial and Engineering Chemistry. volum 57.
Vitenskapelig artikkel
Jahan, Zaib; Niazi, Muhammad Bilal Khan; Hagg, May-Britt; Gregersen, Øyvind Weiby. (2018) Cellulose nanocrystal/PVA nanocomposite membranes for CO2/CH4 separation at high pressure. Journal of Membrane Science. volum 554.
Vitenskapelig artikkel
Jahan, Zaib; Niazi, Muhammad Bilal Khan; Hagg, May-Britt; Gregersen, Øyvind Weiby. (2018) Decoupling the effect of membrane thickness and CNC concentration in PVA based nanocomposite membranes for CO2/CH4 separation. Separation and Purification Technology. volum 204.
Vitenskapelig artikkel
Torstensen, Jonathan Ø; Johnsen, Per-Olav; Riis, Henrik; Spontak, Richard J; Deng, Liyuan; Gregersen, Øyvind Weiby; Syverud, Kristin. (2018) Preparation of cellulose nanofibrils for imaging purposes: comparison of liquid cryogens for rapid vitrification. Cellulose. volum 25 (8).
Vitenskapelig artikkel
Torstensen, Jonathan Ø; Liu, Ming; Jin, Soo-Ah; Deng, Liyuan; Hawari, Ayman I.; Syverud, Kristin; Spontak, Richard J.; Gregersen, Øyvind Weiby. (2018) Swelling and Free-Volume Characteristics of TEMPO-Oxidized Cellulose Nanofibril Films. Biomacromolecules. volum 19 (3).
Vitenskapelig artikkel

2017

Ottesen, Vegar; Kumar, Vinay; Toivakka, Martti; Chinga-Carrasco, Gary; Syverud, Kristin; Gregersen, Øyvind Weiby. (2017) Viability and properties of roll-to-roll coating of cellulose nanofibrils on recycled paperboard. Nordic Pulp & Paper Research Journal (NPPRJ). volum 32 (2).
Vitenskapelig artikkel
Gregersen, Øyvind Weiby; Kløkstad, Geir Øivind; Hervik, Sigbjørn; Plesser, Hans Ekkehard; Pettersen, Ivar. (2017) Some factors affecting the grades of technology students. Nordic Journal of STEM Education. volum 1 (1).
Vitenskapelig artikkel
Kumar, Vinay; Ottesen, Vegar; Syverud, Kristin; Gregersen, Øyvind Weiby; Toivakka, Martti. (2017) Coatability of cellulose nanofibril suspensions: Role of rheology and water retention. BioResources. volum 12 (4).
Vitenskapelig artikkel
Niazi, Muhammad Bilal Khan; Jahan, Zaib; Berg, Sigrun Sofie; Gregersen, Øyvind Weiby. (2017) Mechanical, thermal and swelling properties of phosphorylated nanocellulose fibrils/PVA nanocomposite membranes. Carbohydrate Polymers. volum 177.
Vitenskapelig artikkel
Ottesen, Vegar; Syverud, Kristin; Gregersen, Øyvind Weiby. (2017) Nanocellulose - et steg nærmere fremtidens innpakking. Kjemi. volum 4.
Populærvitenskapelig artikkel

2013

Hellström, Lisbeth M.; Carlberg, Torbjörn; Engstrand, Per; Gradin, Per A.; Gregersen, Øyvind Weiby. (2013) EVALUATION OF COLLIMATED CHIPPING TECHNOLOGY FOR REDUCING ENERGY CONSUMPTION IN MECHANICAL PULPING. Pulp & paper Canada. volum 114 (6).
Vitenskapelig artikkel
Narvestad, Hanne; Gregersen, Øyvind Weiby; Kure, K. A.. (2013) Filler clay induced discolouration of bleached mechanical pulp. Nordic Pulp & Paper Research Journal (NPPRJ). volum 28 (1).
Vitenskapelig artikkel
Narvestad, Hanne; Gregersen, Øyvind Weiby; Kure, Kjell-Arve. (2013) Effect of sodium dithionite post-bleaching on the clay-induced discolouration of a hydrogen peroxide bleached mechanical pulp. Nordic Pulp & Paper Research Journal (NPPRJ). volum 28 (3).
Vitenskapelig artikkel
Narvestad, Hanne; Gregersen, Øyvind Weiby; Kure, Kjell-Arve. (2013) Reaction kinetics and mechanisms of filler clay-induced discolouration of bleached mechanical pulp. Nordic Pulp & Paper Research Journal (NPPRJ). volum 28 (3).
Vitenskapelig artikkel
Roel, Lisbeth H Blekkan; Helmersen, Tom; Gregersen, Øyvind Weiby. (2013) Annual report 2012: Department of Chemical Engineering. 2013.
Rapport
Simonsen, Galina; Hoff, Bård Helge; Lenes, Marianne; Eriksen, Øyvind; Gregersen, Øyvind Weiby. (2013) Gas-phase esterification of microfibrillated cellulose (MFC) films. Cellulose. volum 20 (3).
Vitenskapelig artikkel
Simonsen, Galina; Saito, T; Lenes, Marianne; Eriksen, Øyvind; Gregersen, Øyvind Weiby; Kuramae, R; Isogai, A. (2013) TEMPO-Mediated Oxidation of Norway Spruce and Eucalyptus Pulps: Preparation and Characterization of Nanofibers and Nanofiber Dispersions. Journal of Polymers and the Environment. volum 21 (1).
Vitenskapelig artikkel

2012

Hii, Collin Ching Tyn; Gregersen, Øyvind Weiby; Chinga-Carrasco, Gary; Eriksen, Øyvind. (2012) The effect of MFC on the pressability and paper properties of TMP and GCC based sheets. Nordic Pulp & Paper Research Journal (NPPRJ). volum 27 (2).
Vitenskapelig artikkel
Hii, Collin Ching Tyn; Gregersen, Øyvind Weiby; Chinga-Carrasco, Gary; Eriksen, Øyvind. (2012) The effect of newsprint furnish composition and sheet structure on wet pressing efficiency. Nordic Pulp & Paper Research Journal (NPPRJ). volum 27 (4).
Vitenskapelig artikkel
Hii, Collin Ching Tyn; Gregersen, Øyvind Weiby; Chinga-Carrasco, Gary; Eriksen, Øyvind; Toven, Kai. (2012) The web structure in relation to the furnish composition and shoe press pulse profiles during wet pressing. Nordic Pulp & Paper Research Journal (NPPRJ). volum 27 (4).
Vitenskapelig artikkel
Hellström, Lisbeth M.; Carlberg, Torbjörn; Engstrand, Per; Gradin, Per A.; Gregersen, Øyvind Weiby. (2012) Evaluation of collimated chipping technology for reducing energy consumption in mechanical pulping. Journal of Science & Technology for Forest Products and Processes. volum 2 (3).
Vitenskapelig artikkel
Nguyen, Tuan-Anh; Männle, Ferdinand; Gregersen, Øyvind Weiby. (2012) Polyethylene/octa-(ethyl octadeca-10,13 dienoamide) silsesquioxane blends and the adhesion strength to paperboard. International Journal of Adhesion and Adhesives. volum 38.
Vitenskapelig artikkel
Roel, Lisbeth H Blekkan; Helmersen, Tom; Gregersen, Øyvind Weiby. (2012) Annual report 2011. 2012.
Rapport
Simonsen, Galina; Eriksen, Øyvind; Gregersen, Øyvind Weiby. (2012) TEMPO-oxidized cellulose nanofiber films: effect of surface morphology on water resistance. Cellulose. volum 19 (4).
Vitenskapelig artikkel
Simonsen, Galina; Roudot, Solenne; Eriksen, Øyvind; Männle, Ferdinand; Gregersen, Øyvind Weiby. (2012) The formation and characterization of sustainable layered films incorporating Microfibrillated Cellulose (MFC). BioResources. volum 7 (3).
Vitenskapelig artikkel
Simonsen, Galina; Saito, T; Lenes, Marianne; Eriksen, Øyvind; Gregersen, Øyvind Weiby; Fukuzumi, H; Isogai, A. (2012) Mechanical and oxygen barrier properties of films prepared from fibrillated dispersions of TEMPO-oxidized Norway spruce and Eucalyptus pulps. Cellulose. volum 19 (3).
Vitenskapelig artikkel

2011

Hii, Collin Ching Tyn; Gregersen, Øyvind Weiby; Chinga-Carrasco, Gary; Eriksen, Øyvind; Toven, Kai; Rosén, F.; Vomhoff, H.. (2011) Quantification of the Web Structure in Relation to Process Conditions During Wet Pressing and Furnish Composition. Progress in Paper Physics Seminar 2011. Conference Proceedings.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Gregersen, Øyvind Weiby. (2011) A hub for research nd education. Public Service Review: European Union. volum 21.
Populærvitenskapelig artikkel
Gregersen, Øyvind Weiby; Svendsen, Hallvard Fjøsne; Andreassen, Jens-Petter. (2011) Minneord over professor Gunnar Thorsen. Årbok - Norges Tekniske Vitenskapsakademi (NTVA).
Kronikk
Hellström, Lisbeth M.; Gradin, Per A.; Engstrand, Per; Gregersen, Øyvind Weiby. (2011) Properties of wood chips for thermomechanical pulp (TMP) production as a function of spout angle. Holzforschung. volum 65 (6).
Vitenskapelig artikkel
Iotti, Marco; Gregersen, Øyvind Weiby; Moe, Størker; Lenes, Marianne. (2011) Rheological Studies of Microfibrillar Cellulose Water Dispersions. Journal of Polymers and the Environment. volum 19 (1).
Vitenskapelig artikkel
Opedal, Mihaela Tanase; Stenius, Per Johan; Gregersen, Øyvind Weiby; Johansson, Lars; Hill, Jan. (2011) Removal of dissolved and colloidal substances from TMP process water using dissolved air flotation. Laboratory tests. Nordic Pulp & Paper Research Journal (NPPRJ). volum 26 (1).
Vitenskapelig artikkel
Paunonen, Sara Inkeri; Lenes, Marianne; Gregersen, Øyvind Weiby. (2011) Moisture Content of Polyethylene Coated Solid Fibreboard after Industrial Lamination. Packaging technology & science. volum 24 (3).
Vitenskapelig artikkel
Roel, Lisbeth H Blekkan; Helmersen, Tom; Gregersen, Øyvind Weiby. (2011) Annual Report 2010: Department of Chemical Engineering, NTNU. 2011.
Rapport
Rusu, Marius; Liukkonen, Sari; Gregersen, Øyvind Weiby; Sirviö, Jari. (2011) The influence of fibre wall thickness and fibril angle on fibre development in the TMP process. Nordic Pulp & Paper Research Journal (NPPRJ). volum 26 (1).
Vitenskapelig artikkel
Rusu, Marius; Mörseburg, Kathrin; Gregersen, Øyvind Weiby; Yamakawa, Asuka; Liukkonen, Sari. (2011) RELATION BETWEEN FIBRE FLEXIBILITY AND CROSS-SECTIONAL PROPERTIES. BioResources. volum 6 (1).
Vitenskapelig artikkel
Simonsen, Galina; Lenes, Marianne; Eriksen, Øyvind; Gregersen, Øyvind Weiby. (2011) Surface chemical modification of microfibrillated cellulose: improvement of barrier properties for packaging applications. Cellulose. volum 18 (1).
Vitenskapelig artikkel

2010

Gurandsrud, Karl J.; Gregersen, Øyvind Weiby. (2010) Fra sulfittmassekjemi til bioraffineri. Kjemi. volum 5.
Faglig artikkel
Paunonen, Sara Inkeri; Gregersen, Øyvind Weiby. (2010) The Effect of Moisture Content on Compression Strength of Boxes Made of Solid Fiberboard with Polyethylene Coating—An Experimental Study. Journal of Applied Packaging Research. volum 4 (4).
Vitenskapelig artikkel
Paunonen, Sara Inkeri; Lenes, Marianne; Gregersen, Øyvind Weiby. (2010) Modeled and measured bending stiffness of polyethylene coated solid fiberboard. Nordic Pulp & Paper Research Journal (NPPRJ). volum 25 (3).
Vitenskapelig artikkel
Roel, Lisbeth H Blekkan; Helmersen, Tom; Gregersen, Øyvind Weiby. (2010) Annual report 2009: Department of Chemical Engineering, NTNU. 2010.
Rapport

2009

Gregersen, Øyvind Weiby; Syverud, Kristin; Chinga-Carrasco, Gary; Eriksen, Øyvind. (2009) The Influence of Microfibrillated Cellulose, MFC, on Paper Strength and Surface Properties. Advances in Pulp and Paper Research, Oxford 2009.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Mäkelä, Petri; Nordhagen, Håkon Ottar; Gregersen, Øyvind Weiby. (2009) Validation of isotropic deformation theory of plasticity for fracture mechanics analysis of paper materials. Nordic Pulp & Paper Research Journal (NPPRJ). volum 24 (4).
Vitenskapelig artikkel

2008

Antoine, Christine; Gregersen, Øyvind Weiby. (2008) On the three component quantification of print-throud. Part 2: Effect of the ink vehicle extraction on print optical properties. Nordic Pulp & Paper Research Journal (NPPRJ). volum 23 (1).
Vitenskapelig artikkel
Eriksen, Øyvind; Syverud, Kristin; Gregersen, Øyvind Weiby. (2008) The use of microfibrillated cellulose produced from kraft pulp as strength enhancer in TMP paper. Nordic Pulp & Paper Research Journal (NPPRJ). volum 23 (3).
Vitenskapelig artikkel
Nordhagen, Håkon Ottar; Eriksen, Øyvind; Gregersen, Øyvind Weiby. (2008) Strength variations in paper containing a sharp notch. Nordic Pulp & Paper Research Journal (NPPRJ). volum 23 (2).
Vitenskapelig artikkel

2007

Eriksen, Øyvind; Gregersen, Øyvind Weiby. (2007) The influence of ink oil on print-through. Nordic Pulp & Paper Research Journal (NPPRJ). volum 22 (3).
Vitenskapelig artikkel
Eriksen, Øyvind; Johannesen, Erik; Gregersen, Øyvind Weiby. (2007) The influence of paper surface roughness on ink pigment distribution. Appita journal. volum 60 (5).
Vitenskapelig artikkel
Haugan, Marianne; Gregersen, Øyvind Weiby. (2007) Fractionating - A Way to Save Bleaching Chemicals ?. Journal of Pulp and Paper Science (JPPS). volum 33 (3).
Vitenskapelig artikkel

2006

Eriksen, Oddbjørn; Gregersen, Øyvind Weiby; Krogstad, Per-Åge. (2006) Pressure and vibration in the refining zone of a TMP refiner - influence of the fibre flow. Nordic Pulp & Paper Research Journal (NPPRJ). volum 21 (1).
Vitenskapelig artikkel
Eriksen, Oddbjørn; Gregersen, Øyvind Weiby; Krogstad, Per-Åge. (2006) Theoretical estimates of expected refining zone pressure in a mill-scale TMP refiner. Nordic Pulp & Paper Research Journal (NPPRJ). volum 21 (1).
Vitenskapelig artikkel
Eriksen, Øyvind; Chinga, Gary; Gregersen, Øyvind Weiby. (2006) A Mathematical Morphology-Based Method for the Quantification of Fines in the Z Direction of Paper. Journal of Pulp and Paper Science (JPPS). volum 32 (2).
Vitenskapelig artikkel
Eriksen, Øyvind; Gregersen, Øyvind Weiby. (2006) Ink pigment location measured as the position of clay in yellow coldset ink. Nordic Pulp & Paper Research Journal (NPPRJ). volum 21 (4).
Vitenskapelig artikkel
Goel, Amit; Arns, C. H.; Holmstad, Rune; Gregersen, Øyvind Weiby; Bauget, F.; Averdunk, H.; Sok, R. M.; Sheppard, A. P.; Knackstedt, M.. (2006) Analysis of the impact of papermaking variables on the structure and transport properties of paper samples by X-ray microtomography. Journal of Pulp and Paper Science (JPPS). volum 32.
Vitenskapelig artikkel
Haugan, Marianne; Gregersen, Øyvind Weiby. (2006) Hydrogen Peroxide Bleaching of Different TMP Fibre Fractions. Journal of Pulp and Paper Science (JPPS). volum 32 (4).
Vitenskapelig artikkel
Haugan, Marianne; Gregersen, Øyvind Weiby. (2006) Hydrogen Peroxide Bleaching of TMP Fines. Journal of Pulp and Paper Science (JPPS). volum 32 (4).
Vitenskapelig artikkel
Haugan, Marianne; Gregersen, Øyvind Weiby. (2006) Hydrogen peroxide bleaching of mechanical pulp fines. Nordic Pulp & Paper Research Journal (NPPRJ). volum 21 (1).
Vitenskapelig artikkel
Holmstad, R; Goel, A; Ramaswamy, S; Gregersen, Øyvind Weiby. (2006) Visualization and characterization of high resolution 3D images of paper samples. Appita journal. volum 59.
Vitenskapelig artikkel
Holmstad, Rune; Goel, Amit; Ramaswamy, Shri; Gregersen, Øyvind Weiby. (2006) Visualization and characterization of high resolution 3D images of paper samples. Appita journal. volum 59 (3).
Vitenskapelig artikkel
Lenes, Marianne; Gregersen, Øyvind Weiby. (2006) Effect of surface chemistry and topography of sulphite fibres on the transcrystallinity of polypropylene. Cellulose. volum 13.
Vitenskapelig artikkel

2005

Eriksen, Oddbjørn; Gregersen, Øyvind Weiby; Krogstad, Per-Åge. (2005) Refining zone pressure in a mill-scale TMP refiner measured by fibre-optic sensors. Nordic Pulp & Paper Research Journal (NPPRJ). volum 20 (4).
Vitenskapelig artikkel
Eriksen, Øyvind; Gregersen, Øyvind Weiby. (2005) The influence of ink pigment penetration and paper structure on print through. Nordic Pulp & Paper Research Journal (NPPRJ). volum 20 (2).
Vitenskapelig artikkel
Holmstad, Rune; Gregersen, Øyvind Weiby; Aaltosalmi, U; Koponen, A; Goel, A; Ramaswamy, S. (2005) Comparison of 3D structural charcteristics of high and low resolution X-ray microtomographic images of paper. Nordic Pulp & Paper Research Journal (NPPRJ). volum 20 (3).
Vitenskapelig artikkel

2004

Holmstad, Rune; Kure, Kjell-Arve; Chinga, Gary; Gregersen, Øyvind Weiby. (2004) Effect of temperature gradient multi-nip calendering on the structure of SC paper. Nordic Pulp & Paper Research Journal (NPPRJ). volum 19 (4).
Vitenskapelig artikkel

2002

Hestmo, Rune Harald; Gregersen, Øyvind Weiby; Lamvik, Magne. (2002) Calendering of wood containing paper: A laboratory study of temperature, moisture and pressure effects on fibre wall damage. Nordic Pulp & Paper Research Journal (NPPRJ). volum 17 (1).
Vitenskapelig artikkel
Toven, Kai; Gregersen, Øyvind Weiby; Holmstad, Rune; Lieng, Erik. (2002) Paper Physics Seminar in Syracuse, New York. Skogindustri. volum 56 (11).
Populærvitenskapelig artikkel

1998

Gregersen, Øyvind Weiby. (1998) On the assessment of effective paper web strength. 1998. Doktor ingeniøravhandling 1998:76.
Doktorgradsavhandling
Gregersen, Øyvind Weiby. (1998) On the assessmentof effective paper web strength. 1998. ISBN 82-471-0275-7.
Doktorgradsavhandling

1997

Helle, Torbjørn; Johnsen, Per Olav; Gregersen, Øyvind Weiby; Skinnarland, Ingrid. (1997) Methods to study the coverage of lignin rich material in fibres and paper surfaces. 1997. Nordpap & DP1/34 & Scan forsk-rapport & 693 (693).
Rapport

1995

Gregersen, Øyvind Weiby; Skinnarland, Ingrid; Johnsen, Per Olav; Helle, Torbjørn; Ødegaard, Svein; Svardal, A.; Ueland, P. M.; Norros, Ilkka; Virtamo, Jorma; Talle, A. (1995) Qualitative methods for the study of lignin distribution in wood and surface layers of unbleached pulp fibres and paper. Kompendium, utgitt av NHH. volum 21 (8).
Vitenskapelig artikkel

Tidsskriftspublikasjoner

Jahan, Zaib; Bilal, Muhammad; Gul, Saeed; Sher, Farooq; Kakar, Salik Javed; Hagg, May-Britt; Gregersen, Øyvind Weiby. (2021) Mimic Enzyme Based Cellulose Nanocrystals/PVA Nanocomposite Membranes for Enrichment of Biogas as a Natural Gas Substitute. Journal of Polymers and the Environment. volum 29 (8).
Vitenskapelig artikkel
Helberg, Ragne M Lilleby; Torstensen, Jonathan Økland; Dai, Zhongde; Janakiram, Saravanan; Chinga-Carrasco, Gary; Gregersen, Øyvind Weiby; Syverud, Kristin; Deng, Liyuan. (2020) Nanocomposite membranes with high-charge and size-screened phosphorylated nanocellulose fibrils for CO2 separation. Green Energy & Environment. volum 6 (4).
Vitenskapelig artikkel
Niazi, Muhammad Bilal K.; Jahan, Zaib; Arooj, Ahmed; Uzair, Bushra; Mukhtar, Ahmad; Gregersen, Øyvind Weiby. (2020) Mechanical and Thermal Properties of Carboxymethyl fibers (CMF)/PVA based nanocomposite membranes. Journal of Industrial and Engineering Chemistry. volum 90.
Vitenskapelig artikkel
Niazi, Muhammad Bilal Khan; Jahan, Zaib; Ahmed, Arooj; Rafiq, Sikander; Jamil, Farrukh; Gregersen, Øyvind Weiby. (2020) Effect of Zn-Cyclen Mimic Enzyme on Mechanical, Thermal and Swelling Properties of Cellulose Nanocrystals/PVA Nanocomposite Membranes. Journal of Polymers and the Environment. volum 28 (7).
Vitenskapelig artikkel
Ottesen, Vegar; Larsson, Per Tomas; Chinga-Carrasco, Gary; Syverud, Kristin; Gregersen, Øyvind Weiby. (2019) Mechanical properties of cellulose nanofibril films: effects of crystallinity and its modification by treatment with liquid anhydrous ammonia. Cellulose. volum 26 (11).
Vitenskapelig artikkel
Jahan, Zaib; Niazi, Muhammad Bilal Khan; Hagg, May-Britt; Gregersen, Øyvind Weiby; Hussain, Arshad. (2019) Phosphorylated nanocellulose fibrils/PVA nanocomposite membranes for biogas upgrading at higher pressure. Separation science and technology (Print).
Vitenskapelig artikkel
Torstensen, Jonathan Økland; Helberg, Ragne M Lilleby; Deng, Liyuan; Gregersen, Øyvind Weiby; Syverud, Kristin. (2019) PVA/nanocellulose nanocomposite membranes for CO2 separation from flue gas. International Journal of Greenhouse Gas Control. volum 81.
Vitenskapelig artikkel
Jahan, Zaib; Niazi, Muhammad Bilal Khan; Gregersen, Øyvind Weiby. (2018) Mechanical, thermal and swelling properties of cellulose nanocrystals/PVA nanocomposites membranes. Journal of Industrial and Engineering Chemistry. volum 57.
Vitenskapelig artikkel
Jahan, Zaib; Niazi, Muhammad Bilal Khan; Hagg, May-Britt; Gregersen, Øyvind Weiby. (2018) Cellulose nanocrystal/PVA nanocomposite membranes for CO2/CH4 separation at high pressure. Journal of Membrane Science. volum 554.
Vitenskapelig artikkel
Jahan, Zaib; Niazi, Muhammad Bilal Khan; Hagg, May-Britt; Gregersen, Øyvind Weiby. (2018) Decoupling the effect of membrane thickness and CNC concentration in PVA based nanocomposite membranes for CO2/CH4 separation. Separation and Purification Technology. volum 204.
Vitenskapelig artikkel
Torstensen, Jonathan Ø; Johnsen, Per-Olav; Riis, Henrik; Spontak, Richard J; Deng, Liyuan; Gregersen, Øyvind Weiby; Syverud, Kristin. (2018) Preparation of cellulose nanofibrils for imaging purposes: comparison of liquid cryogens for rapid vitrification. Cellulose. volum 25 (8).
Vitenskapelig artikkel
Torstensen, Jonathan Ø; Liu, Ming; Jin, Soo-Ah; Deng, Liyuan; Hawari, Ayman I.; Syverud, Kristin; Spontak, Richard J.; Gregersen, Øyvind Weiby. (2018) Swelling and Free-Volume Characteristics of TEMPO-Oxidized Cellulose Nanofibril Films. Biomacromolecules. volum 19 (3).
Vitenskapelig artikkel
Ottesen, Vegar; Kumar, Vinay; Toivakka, Martti; Chinga-Carrasco, Gary; Syverud, Kristin; Gregersen, Øyvind Weiby. (2017) Viability and properties of roll-to-roll coating of cellulose nanofibrils on recycled paperboard. Nordic Pulp & Paper Research Journal (NPPRJ). volum 32 (2).
Vitenskapelig artikkel
Gregersen, Øyvind Weiby; Kløkstad, Geir Øivind; Hervik, Sigbjørn; Plesser, Hans Ekkehard; Pettersen, Ivar. (2017) Some factors affecting the grades of technology students. Nordic Journal of STEM Education. volum 1 (1).
Vitenskapelig artikkel
Kumar, Vinay; Ottesen, Vegar; Syverud, Kristin; Gregersen, Øyvind Weiby; Toivakka, Martti. (2017) Coatability of cellulose nanofibril suspensions: Role of rheology and water retention. BioResources. volum 12 (4).
Vitenskapelig artikkel
Niazi, Muhammad Bilal Khan; Jahan, Zaib; Berg, Sigrun Sofie; Gregersen, Øyvind Weiby. (2017) Mechanical, thermal and swelling properties of phosphorylated nanocellulose fibrils/PVA nanocomposite membranes. Carbohydrate Polymers. volum 177.
Vitenskapelig artikkel
Ottesen, Vegar; Syverud, Kristin; Gregersen, Øyvind Weiby. (2017) Nanocellulose - et steg nærmere fremtidens innpakking. Kjemi. volum 4.
Populærvitenskapelig artikkel
Ottesen, Vegar; Syverud, Kristin; Gregersen, Øyvind Weiby. (2016) Mixing of cellulose nanofibrils and individual furnish components: Effects on paper properties and structure. Nordic Pulp & Paper Research Journal (NPPRJ). volum 31 (3).
Vitenskapelig artikkel
Nguyen, Tuan Anh; Gregersen, Øyvind Weiby; Männle, Ferdinand. (2015) Thermal oxidation of polyolefins by mild pro-oxidant additives based on iron carboxylates and lipophilic amines: Degradability in the absence of light and effect on the adhesion to paperboard. Polymers. volum 7 (8).
Vitenskapelig artikkel
Brodin, Fredrik Wernersson; Gregersen, Øyvind Weiby; Syverud, Kristin. (2014) Cellulose nanofibrils: Challenges and possibilities as a paper additive or coating material - A review. Nordic Pulp & Paper Research Journal (NPPRJ). volum 29 (1).
Vitenskapelig artikkel
Narvestad, Hanne; Gregersen, Øyvind Weiby; Kure, Kjell-Arve. (2014) Variation in surface potential decay characteristics of super-calendered papers. Nordic Pulp & Paper Research Journal (NPPRJ). volum 29 (3).
Vitenskapelig artikkel
Narvestad, Hanne; Gregersen, Øyvind Weiby; Stenius, Per Johan; Kure, Kjell-Arve. (2014) Variables that affect surface potential decay of super-calendered paper. Nordic Pulp & Paper Research Journal (NPPRJ). volum 29 (3).
Vitenskapelig artikkel
Nguyen, Tuan Anh; Gregersen, Øyvind Weiby; Männle, Ferdinand; Brachet, Philippe. (2014) Effects of hydrophobic polyhedral oligomeric silsesquioxane coating on water vapour barrier and water resistance properties of paperboard. Journal of Sol-Gel Science and Technology. volum 69 (2).
Vitenskapelig artikkel
Hellström, Lisbeth M.; Carlberg, Torbjörn; Engstrand, Per; Gradin, Per A.; Gregersen, Øyvind Weiby. (2013) EVALUATION OF COLLIMATED CHIPPING TECHNOLOGY FOR REDUCING ENERGY CONSUMPTION IN MECHANICAL PULPING. Pulp & paper Canada. volum 114 (6).
Vitenskapelig artikkel
Narvestad, Hanne; Gregersen, Øyvind Weiby; Kure, K. A.. (2013) Filler clay induced discolouration of bleached mechanical pulp. Nordic Pulp & Paper Research Journal (NPPRJ). volum 28 (1).
Vitenskapelig artikkel
Narvestad, Hanne; Gregersen, Øyvind Weiby; Kure, Kjell-Arve. (2013) Effect of sodium dithionite post-bleaching on the clay-induced discolouration of a hydrogen peroxide bleached mechanical pulp. Nordic Pulp & Paper Research Journal (NPPRJ). volum 28 (3).
Vitenskapelig artikkel
Narvestad, Hanne; Gregersen, Øyvind Weiby; Kure, Kjell-Arve. (2013) Reaction kinetics and mechanisms of filler clay-induced discolouration of bleached mechanical pulp. Nordic Pulp & Paper Research Journal (NPPRJ). volum 28 (3).
Vitenskapelig artikkel
Simonsen, Galina; Hoff, Bård Helge; Lenes, Marianne; Eriksen, Øyvind; Gregersen, Øyvind Weiby. (2013) Gas-phase esterification of microfibrillated cellulose (MFC) films. Cellulose. volum 20 (3).
Vitenskapelig artikkel
Simonsen, Galina; Saito, T; Lenes, Marianne; Eriksen, Øyvind; Gregersen, Øyvind Weiby; Kuramae, R; Isogai, A. (2013) TEMPO-Mediated Oxidation of Norway Spruce and Eucalyptus Pulps: Preparation and Characterization of Nanofibers and Nanofiber Dispersions. Journal of Polymers and the Environment. volum 21 (1).
Vitenskapelig artikkel
Hii, Collin Ching Tyn; Gregersen, Øyvind Weiby; Chinga-Carrasco, Gary; Eriksen, Øyvind. (2012) The effect of MFC on the pressability and paper properties of TMP and GCC based sheets. Nordic Pulp & Paper Research Journal (NPPRJ). volum 27 (2).
Vitenskapelig artikkel
Hii, Collin Ching Tyn; Gregersen, Øyvind Weiby; Chinga-Carrasco, Gary; Eriksen, Øyvind. (2012) The effect of newsprint furnish composition and sheet structure on wet pressing efficiency. Nordic Pulp & Paper Research Journal (NPPRJ). volum 27 (4).
Vitenskapelig artikkel
Hii, Collin Ching Tyn; Gregersen, Øyvind Weiby; Chinga-Carrasco, Gary; Eriksen, Øyvind; Toven, Kai. (2012) The web structure in relation to the furnish composition and shoe press pulse profiles during wet pressing. Nordic Pulp & Paper Research Journal (NPPRJ). volum 27 (4).
Vitenskapelig artikkel
Hellström, Lisbeth M.; Carlberg, Torbjörn; Engstrand, Per; Gradin, Per A.; Gregersen, Øyvind Weiby. (2012) Evaluation of collimated chipping technology for reducing energy consumption in mechanical pulping. Journal of Science & Technology for Forest Products and Processes. volum 2 (3).
Vitenskapelig artikkel
Nguyen, Tuan-Anh; Männle, Ferdinand; Gregersen, Øyvind Weiby. (2012) Polyethylene/octa-(ethyl octadeca-10,13 dienoamide) silsesquioxane blends and the adhesion strength to paperboard. International Journal of Adhesion and Adhesives. volum 38.
Vitenskapelig artikkel
Simonsen, Galina; Eriksen, Øyvind; Gregersen, Øyvind Weiby. (2012) TEMPO-oxidized cellulose nanofiber films: effect of surface morphology on water resistance. Cellulose. volum 19 (4).
Vitenskapelig artikkel
Simonsen, Galina; Roudot, Solenne; Eriksen, Øyvind; Männle, Ferdinand; Gregersen, Øyvind Weiby. (2012) The formation and characterization of sustainable layered films incorporating Microfibrillated Cellulose (MFC). BioResources. volum 7 (3).
Vitenskapelig artikkel
Simonsen, Galina; Saito, T; Lenes, Marianne; Eriksen, Øyvind; Gregersen, Øyvind Weiby; Fukuzumi, H; Isogai, A. (2012) Mechanical and oxygen barrier properties of films prepared from fibrillated dispersions of TEMPO-oxidized Norway spruce and Eucalyptus pulps. Cellulose. volum 19 (3).
Vitenskapelig artikkel
Gregersen, Øyvind Weiby. (2011) A hub for research nd education. Public Service Review: European Union. volum 21.
Populærvitenskapelig artikkel
Gregersen, Øyvind Weiby; Svendsen, Hallvard Fjøsne; Andreassen, Jens-Petter. (2011) Minneord over professor Gunnar Thorsen. Årbok - Norges Tekniske Vitenskapsakademi (NTVA).
Kronikk
Hellström, Lisbeth M.; Gradin, Per A.; Engstrand, Per; Gregersen, Øyvind Weiby. (2011) Properties of wood chips for thermomechanical pulp (TMP) production as a function of spout angle. Holzforschung. volum 65 (6).
Vitenskapelig artikkel
Iotti, Marco; Gregersen, Øyvind Weiby; Moe, Størker; Lenes, Marianne. (2011) Rheological Studies of Microfibrillar Cellulose Water Dispersions. Journal of Polymers and the Environment. volum 19 (1).
Vitenskapelig artikkel
Opedal, Mihaela Tanase; Stenius, Per Johan; Gregersen, Øyvind Weiby; Johansson, Lars; Hill, Jan. (2011) Removal of dissolved and colloidal substances from TMP process water using dissolved air flotation. Laboratory tests. Nordic Pulp & Paper Research Journal (NPPRJ). volum 26 (1).
Vitenskapelig artikkel
Paunonen, Sara Inkeri; Lenes, Marianne; Gregersen, Øyvind Weiby. (2011) Moisture Content of Polyethylene Coated Solid Fibreboard after Industrial Lamination. Packaging technology & science. volum 24 (3).
Vitenskapelig artikkel
Rusu, Marius; Liukkonen, Sari; Gregersen, Øyvind Weiby; Sirviö, Jari. (2011) The influence of fibre wall thickness and fibril angle on fibre development in the TMP process. Nordic Pulp & Paper Research Journal (NPPRJ). volum 26 (1).
Vitenskapelig artikkel
Rusu, Marius; Mörseburg, Kathrin; Gregersen, Øyvind Weiby; Yamakawa, Asuka; Liukkonen, Sari. (2011) RELATION BETWEEN FIBRE FLEXIBILITY AND CROSS-SECTIONAL PROPERTIES. BioResources. volum 6 (1).
Vitenskapelig artikkel
Simonsen, Galina; Lenes, Marianne; Eriksen, Øyvind; Gregersen, Øyvind Weiby. (2011) Surface chemical modification of microfibrillated cellulose: improvement of barrier properties for packaging applications. Cellulose. volum 18 (1).
Vitenskapelig artikkel
Gurandsrud, Karl J.; Gregersen, Øyvind Weiby. (2010) Fra sulfittmassekjemi til bioraffineri. Kjemi. volum 5.
Faglig artikkel
Paunonen, Sara Inkeri; Gregersen, Øyvind Weiby. (2010) The Effect of Moisture Content on Compression Strength of Boxes Made of Solid Fiberboard with Polyethylene Coating—An Experimental Study. Journal of Applied Packaging Research. volum 4 (4).
Vitenskapelig artikkel
Paunonen, Sara Inkeri; Lenes, Marianne; Gregersen, Øyvind Weiby. (2010) Modeled and measured bending stiffness of polyethylene coated solid fiberboard. Nordic Pulp & Paper Research Journal (NPPRJ). volum 25 (3).
Vitenskapelig artikkel
Mäkelä, Petri; Nordhagen, Håkon Ottar; Gregersen, Øyvind Weiby. (2009) Validation of isotropic deformation theory of plasticity for fracture mechanics analysis of paper materials. Nordic Pulp & Paper Research Journal (NPPRJ). volum 24 (4).
Vitenskapelig artikkel
Antoine, Christine; Gregersen, Øyvind Weiby. (2008) On the three component quantification of print-throud. Part 2: Effect of the ink vehicle extraction on print optical properties. Nordic Pulp & Paper Research Journal (NPPRJ). volum 23 (1).
Vitenskapelig artikkel
Eriksen, Øyvind; Syverud, Kristin; Gregersen, Øyvind Weiby. (2008) The use of microfibrillated cellulose produced from kraft pulp as strength enhancer in TMP paper. Nordic Pulp & Paper Research Journal (NPPRJ). volum 23 (3).
Vitenskapelig artikkel
Nordhagen, Håkon Ottar; Eriksen, Øyvind; Gregersen, Øyvind Weiby. (2008) Strength variations in paper containing a sharp notch. Nordic Pulp & Paper Research Journal (NPPRJ). volum 23 (2).
Vitenskapelig artikkel
Eriksen, Øyvind; Gregersen, Øyvind Weiby. (2007) The influence of ink oil on print-through. Nordic Pulp & Paper Research Journal (NPPRJ). volum 22 (3).
Vitenskapelig artikkel
Eriksen, Øyvind; Johannesen, Erik; Gregersen, Øyvind Weiby. (2007) The influence of paper surface roughness on ink pigment distribution. Appita journal. volum 60 (5).
Vitenskapelig artikkel
Haugan, Marianne; Gregersen, Øyvind Weiby. (2007) Fractionating - A Way to Save Bleaching Chemicals ?. Journal of Pulp and Paper Science (JPPS). volum 33 (3).
Vitenskapelig artikkel
Eriksen, Oddbjørn; Gregersen, Øyvind Weiby; Krogstad, Per-Åge. (2006) Pressure and vibration in the refining zone of a TMP refiner - influence of the fibre flow. Nordic Pulp & Paper Research Journal (NPPRJ). volum 21 (1).
Vitenskapelig artikkel
Eriksen, Oddbjørn; Gregersen, Øyvind Weiby; Krogstad, Per-Åge. (2006) Theoretical estimates of expected refining zone pressure in a mill-scale TMP refiner. Nordic Pulp & Paper Research Journal (NPPRJ). volum 21 (1).
Vitenskapelig artikkel
Eriksen, Øyvind; Chinga, Gary; Gregersen, Øyvind Weiby. (2006) A Mathematical Morphology-Based Method for the Quantification of Fines in the Z Direction of Paper. Journal of Pulp and Paper Science (JPPS). volum 32 (2).
Vitenskapelig artikkel
Eriksen, Øyvind; Gregersen, Øyvind Weiby. (2006) Ink pigment location measured as the position of clay in yellow coldset ink. Nordic Pulp & Paper Research Journal (NPPRJ). volum 21 (4).
Vitenskapelig artikkel
Goel, Amit; Arns, C. H.; Holmstad, Rune; Gregersen, Øyvind Weiby; Bauget, F.; Averdunk, H.; Sok, R. M.; Sheppard, A. P.; Knackstedt, M.. (2006) Analysis of the impact of papermaking variables on the structure and transport properties of paper samples by X-ray microtomography. Journal of Pulp and Paper Science (JPPS). volum 32.
Vitenskapelig artikkel
Haugan, Marianne; Gregersen, Øyvind Weiby. (2006) Hydrogen Peroxide Bleaching of Different TMP Fibre Fractions. Journal of Pulp and Paper Science (JPPS). volum 32 (4).
Vitenskapelig artikkel
Haugan, Marianne; Gregersen, Øyvind Weiby. (2006) Hydrogen Peroxide Bleaching of TMP Fines. Journal of Pulp and Paper Science (JPPS). volum 32 (4).
Vitenskapelig artikkel
Haugan, Marianne; Gregersen, Øyvind Weiby. (2006) Hydrogen peroxide bleaching of mechanical pulp fines. Nordic Pulp & Paper Research Journal (NPPRJ). volum 21 (1).
Vitenskapelig artikkel
Holmstad, R; Goel, A; Ramaswamy, S; Gregersen, Øyvind Weiby. (2006) Visualization and characterization of high resolution 3D images of paper samples. Appita journal. volum 59.
Vitenskapelig artikkel
Holmstad, Rune; Goel, Amit; Ramaswamy, Shri; Gregersen, Øyvind Weiby. (2006) Visualization and characterization of high resolution 3D images of paper samples. Appita journal. volum 59 (3).
Vitenskapelig artikkel
Lenes, Marianne; Gregersen, Øyvind Weiby. (2006) Effect of surface chemistry and topography of sulphite fibres on the transcrystallinity of polypropylene. Cellulose. volum 13.
Vitenskapelig artikkel
Eriksen, Oddbjørn; Gregersen, Øyvind Weiby; Krogstad, Per-Åge. (2005) Refining zone pressure in a mill-scale TMP refiner measured by fibre-optic sensors. Nordic Pulp & Paper Research Journal (NPPRJ). volum 20 (4).
Vitenskapelig artikkel
Eriksen, Øyvind; Gregersen, Øyvind Weiby. (2005) The influence of ink pigment penetration and paper structure on print through. Nordic Pulp & Paper Research Journal (NPPRJ). volum 20 (2).
Vitenskapelig artikkel
Holmstad, Rune; Gregersen, Øyvind Weiby; Aaltosalmi, U; Koponen, A; Goel, A; Ramaswamy, S. (2005) Comparison of 3D structural charcteristics of high and low resolution X-ray microtomographic images of paper. Nordic Pulp & Paper Research Journal (NPPRJ). volum 20 (3).
Vitenskapelig artikkel
Holmstad, Rune; Kure, Kjell-Arve; Chinga, Gary; Gregersen, Øyvind Weiby. (2004) Effect of temperature gradient multi-nip calendering on the structure of SC paper. Nordic Pulp & Paper Research Journal (NPPRJ). volum 19 (4).
Vitenskapelig artikkel
Hestmo, Rune Harald; Gregersen, Øyvind Weiby; Lamvik, Magne. (2002) Calendering of wood containing paper: A laboratory study of temperature, moisture and pressure effects on fibre wall damage. Nordic Pulp & Paper Research Journal (NPPRJ). volum 17 (1).
Vitenskapelig artikkel
Toven, Kai; Gregersen, Øyvind Weiby; Holmstad, Rune; Lieng, Erik. (2002) Paper Physics Seminar in Syracuse, New York. Skogindustri. volum 56 (11).
Populærvitenskapelig artikkel
Gregersen, Øyvind Weiby; Skinnarland, Ingrid; Johnsen, Per Olav; Helle, Torbjørn; Ødegaard, Svein; Svardal, A.; Ueland, P. M.; Norros, Ilkka; Virtamo, Jorma; Talle, A. (1995) Qualitative methods for the study of lignin distribution in wood and surface layers of unbleached pulp fibres and paper. Kompendium, utgitt av NHH. volum 21 (8).
Vitenskapelig artikkel

Del av bok/rapport

Hii, Collin Ching Tyn; Gregersen, Øyvind Weiby; Chinga-Carrasco, Gary; Eriksen, Øyvind; Toven, Kai; Rosén, F.; Vomhoff, H.. (2011) Quantification of the Web Structure in Relation to Process Conditions During Wet Pressing and Furnish Composition. Progress in Paper Physics Seminar 2011. Conference Proceedings.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Gregersen, Øyvind Weiby; Syverud, Kristin; Chinga-Carrasco, Gary; Eriksen, Øyvind. (2009) The Influence of Microfibrillated Cellulose, MFC, on Paper Strength and Surface Properties. Advances in Pulp and Paper Research, Oxford 2009.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

Rapport

Roel, Lisbeth H Blekkan; Helmersen, Tom; Gregersen, Øyvind Weiby. (2013) Annual report 2012: Department of Chemical Engineering. 2013.
Rapport
Roel, Lisbeth H Blekkan; Helmersen, Tom; Gregersen, Øyvind Weiby. (2012) Annual report 2011. 2012.
Rapport
Roel, Lisbeth H Blekkan; Helmersen, Tom; Gregersen, Øyvind Weiby. (2011) Annual Report 2010: Department of Chemical Engineering, NTNU. 2011.
Rapport
Roel, Lisbeth H Blekkan; Helmersen, Tom; Gregersen, Øyvind Weiby. (2010) Annual report 2009: Department of Chemical Engineering, NTNU. 2010.
Rapport
Gregersen, Øyvind Weiby. (1998) On the assessment of effective paper web strength. 1998. Doktor ingeniøravhandling 1998:76.
Doktorgradsavhandling
Gregersen, Øyvind Weiby. (1998) On the assessmentof effective paper web strength. 1998. ISBN 82-471-0275-7.
Doktorgradsavhandling
Helle, Torbjørn; Johnsen, Per Olav; Gregersen, Øyvind Weiby; Skinnarland, Ingrid. (1997) Methods to study the coverage of lignin rich material in fibres and paper surfaces. 1997. Nordpap & DP1/34 & Scan forsk-rapport & 693 (693).
Rapport

Undervisning

Emner

Formidling