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Comparison of nano- and microfibrillated cellulose films
Cellulose, 2014Nanocellulose is an interesting building block for functional materials and has gained considerable interest due to its mechanical robustness, large surface area and biodegradability. It can be formed into various structures such as solids, films and gels such as hydrogels and aerogels and combined with polymers or other materials to form composites ...
Arthas Yang +7 more
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Morphological Structure of Cellulose Microfibrils
1985The 0.39 nm resolution lattice images of cellulose microfibrils in the cell wall of Valonia macrophysa could be successfully recorded from microfibrils prepared by disintegration as well as ultrathin sectioning. The results obtained from direct imaging of lattice lines contradict the models of the microfibrils in which the crystalline sub-elements ...
J. Sugiyama, H. Harada
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Cellular biocomposites from polylactide and microfibrillated cellulose
Journal of Cellular Plastics, 2012This paper describes the production of “green” microfibrillated cellulose-reinforced polylactide cellular biocomposites using a wet mixing technique combined with supercritical carbon dioxide foaming. The effect of composition on the morphology, density and compression modulus of foams was investigated for different processing parameters, along with ...
Boissard, Carole I. R. +4 more
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The Structure of Cellulose Microfibrils in Valonia
1982It is well known that cellulose is the main consitutent of plant-cell walls and that it exists as thin threads of indefinite length called microfibrils. The cellulose microfibril is an important factor influencing the chemical, physical, and mechanical properties of the cell walls, and it will give a clue to an understanding of how cellulose ...
Hiroshi Harada, Toshiyuki Goto
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Journal of Applied Polymer Science, 2010
AbstractTwo types of microfibrillated cellulose (MFC) were prepared using either a sulfite pulp containing a high amount of hemicellulose (MFC 1) or a carboxymethylated dissolving pulp (MFC 2). MFC gels were then combined with amylopectin solutions to produce solvent‐cast MFC‐reinforced amylopectin films.
David Plackett +6 more
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AbstractTwo types of microfibrillated cellulose (MFC) were prepared using either a sulfite pulp containing a high amount of hemicellulose (MFC 1) or a carboxymethylated dissolving pulp (MFC 2). MFC gels were then combined with amylopectin solutions to produce solvent‐cast MFC‐reinforced amylopectin films.
David Plackett +6 more
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Journal of Applied Polymer Science, 2000
The ultrastructure and morphology of potato (Solanum tuberosum L.) tuber cells were investigated by optical, scanning, and transmission electron microscopies. After removal of starch granules, pectins and hemicelluloses were solubilized under alkaline conditions.
Dufresne, A., Dupeyre, D., Vignon, M.R.
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The ultrastructure and morphology of potato (Solanum tuberosum L.) tuber cells were investigated by optical, scanning, and transmission electron microscopies. After removal of starch granules, pectins and hemicelluloses were solubilized under alkaline conditions.
Dufresne, A., Dupeyre, D., Vignon, M.R.
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Microtubules and cellulose microfibrils: how intimate is their relationship?
Trends in Plant Science, 2007The recent visualization of the motion of fluorescently labeled cellulose synthase complexes by Alexander Paredez and colleagues heralds the start of a new era in the science of the plant cell wall. Upon drug-induced complete depolymerization, the movement of the complexes does not become disordered but instead establishes an apparently self-organized ...
Emons, A.M.C., Höfte, H., Mulder, B.
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Process for the production of microfibrillated cellulose and produced microfibrillated cellulose
2010A process for producing microfibrillated cellulose comprises providing a slurry comprising cellulosic fibers, treating the slurry with an enzyme, mechanically treating the slurry so that the fibers are disintegrated wherein the mechanical treatment and the treatment with the enzyme is performed simultaneously in a single treatment step.
Heiskanen, Isto +4 more
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The Cellulose Microfibril as an Imperfect Array of Elementary Fibrils
Macromolecules, 1975Cellulose microfibrils are viewed as imperfect array of elementary fibrils. We have investigated the possible defects in Valonia cellulose microfibrils, which are such that the microfibrils can be broken into elementary fibrils by deformation, but are not sufficient to allow for a small angle maximum corresponding to the elementary fibril dimension ...
John Blackwell, Francis J. Kolpak
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Microstructural analysis of microfibrils of bacterial cellulose
Macromolecular Symposia, 1997AbstractThis paper reviews mainly our recent investigations of two allomorphs of native cellulose, celluloses Iα and Iβ, carried out based on the composite crystal model by high resolution solid state 13C NMR and electron microscopy. First the distribution of the two allomorphs in nature is described together with some deviations from the simple ...
Fumitaka Horii +2 more
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