Results 1 to 10 of about 50 (48)
Pipe rheology of microfibrillated cellulose suspensions [PDF]
Cellulose, 2019 AbstractThe shear rheology of two mechanically manufactured microfibrillated cellulose (MFC) suspensions was studied in a consistency range of 0.2–2.0% with a pipe rheometer combined with ultrasound velocity profiling. The MFC suspensions behaved at all consistencies as shear thinning power law fluids.
Turpeinen Tuomas +5 more
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Flocculation of microfibrillated cellulose in shear flow [PDF]
Cellulose, 2012 AbstractIn this work, the rheological properties of microfibrillated cellulose suspensions under stepped flow and constant shear were studied using a combination of rotational dynamic rheometer and digital imaging. During each rheological measurement, the structure of the suspension was monitored through a transparent outer cylinder with a digital ...
Karppinen, Anni +5 more
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Unraveling Cellulose Microfibrils: A Twisted Tale [PDF]
Biopolymers, 2013 ABSTRACTMolecular dynamics (MD) simulations of cellulose microfibrils are pertinent to the paper, textile, and biofuels industries for their unique capacity to characterize dynamic behavior and atomic‐level interactions with solvent molecules and cellulase enzymes.
Jodi A. Hadden +3 more
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Moisture induced straining of the cellulosic microfibril [PDF]
Cellulose, 2021 Abstract Moisture absorption in the cell wall structure of wood is well known to induce considerable swelling of the wood exerting high expansion forces. This swelling is mainly induced by the sorptive action of the hydroxyl groups of the carbohydrate wood polymers; cellulose and hemicelluloses.
Salmen, Lennart +3 more
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The Shape of Native Plant Cellulose Microfibrils [PDF]
Scientific Reports, 2018 AbstractDetermining the shape of plant cellulose microfibrils is critical for understanding plant cell wall molecular architecture and conversion of cellulose into biofuels. Only recently has it been determined that these cellulose microfibrils are composed of 18 cellulose chains rather than 36 polymers arranged in a diamond-shaped pattern.
James D. Kubicki +5 more
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Microfibrillated Cellulose Suspension and Its Electrorheology [PDF]
Polymers, 2019 Microfibrillated cellulose (MFC) particles were synthesized by a low-pressure alkaline delignification process, and their shape and chemical structure were investigated by SEM and Fourier transformation infrared spectroscopy, respectively. As a novel electrorheological (ER) material, the MFC particulate sample was suspended in insulating oil to ...
Kisuk Choi +5 more
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Nanostructure of cellulose microfibrils in spruce wood [PDF]
Proceedings of the National Academy of Sciences, 2011 The structure of cellulose microfibrils in wood is not known in detail, despite the abundance of cellulose in woody biomass and its importance for biology, energy, and engineering. The structure of the microfibrils of spruce wood cellulose was investigated using a range of spectroscopic methods coupled to small-angle neutron and wide-angle X-ray ...
Michael C. Jarvis +7 more
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Production of Cellulose Microfibrils by Rhizobium [PDF]
Applied Microbiology, 1975 Electron microscope examination of Rhizobium spp. revealed microfibrils produced by flocculating strains but not by nonflocculating strains. The microfibrils from R. trifolii (NA30) were isolated and identified as cellulose by enzymatic, X-ray diffraction, and infrared spectral analyses. Both
David H. Hubbell +2 more
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THE SIZE OF THE CELLULOSE MICROFIBRIL [PDF]
The Journal of Cell Biology, 1963 Recently the lateral width of the cellulose microfibril has been estimated as 30 A rather than about 150 to 200 A, by extrapolation of data from model shadowing experiments. The difference was attributed to a layer of metal deposited during shadowing.
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Unravelling the nanostructure of cellulose microfibrils [PDF]
Acta Crystallographica Section A Foundations and Advances, 2014 Cellulose is the most abundant naturally occurring polymer and has diverse applications in biology, energy and engineering. The cellulose nanostructure has implications on the mechanical strength of natural materials such as wood and nanocelluloses are also being used to create high-performance composite materials with properties comparable to aramid ...
Lynne H. Thomas, Michael C. Jarvis
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