Results 211 to 220 of about 6,124 (238)
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Exploring the Nature of Cellulose Microfibrils
Biomacromolecules, 2015Ultrathin cellulose microfibril fractions were extracted from spruce wood powder using combined delignification, TEMPO-catalyzed oxidation, and sonication processes. Small-angle X-ray scattering of these microfibril fractions in a "dilute" aqueous suspension (concentration 0.077 wt %) revealed that their shape was in the form of nanostrip with 4 nm ...
Christian Burger +4 more
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On the ultrastructure of cellulose microfibrils
Journal of Polymer Science Part A: General Papers, 1965AbstractStatistical formulae based on generally accepted models for cellulose microfibril structure were developed to calculate the mean length of microfibril segments which do not contain molecular chain‐ends, i.e., “continuous segments.” The calculated length of such “continuous segments” for microfibrils of 2–3 mμ cross section, containing molecules
D. Mejzler, I. Ohad
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Polymer composites with cellulose microfibrils
Polymer Engineering & Science, 2007AbstractPolymer composites with cellulose microfibrils are materials with unique properties compared to existing materials: high strength, formability, and geometrical complexity at very small scale, low density, and abrasivity, biomedical compatibility, and possibility of recycling.
Michaela Iorga +5 more
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The parallel lives of microtubules and cellulose microfibrils
Current Opinion in Plant Biology, 2008A major breakthrough was the recent discovery that cellulose synthases really do move along the plasma membrane upon tracks provided by the underlying cortical microtubules. It emphasized the cytoplasmic contribution to cell wall organization. A growing number of microtubule-associated proteins has been identified and shown to affect the way that ...
Clive W. Lloyd, Jordi Chan
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Fractional study of the microfibrillated cellulose
TAPPI Journal, 2014The extremely high aspect ratios of minuscule lignocellulosic particles make analysis and characterization problematic. New methods to quantify the size, shape, and structure of cellulose microparticles are needed. The main objective of this research has been to study the potential of a novel fractional analysis method for microparticles.
Ossi Laitinen, Jouko Niinimäki
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Extensional viscosity of microfibrillated cellulose suspensions
Carbohydrate Polymers, 2014The extensional properties of micro fibrillated cellulose (MFC)-suspensions at different fibril concentrations and with different amounts of added sodium chloride were evaluated. The MFC-suspensions were obtained by diluting a stock solution consisting of 0.95 wt.% cellulose with either deionized water or sodium chloride solution, giving a series of ...
Mikael Rigdahl +4 more
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Localization of Crystalline Allomorphs in Cellulose Microfibril
Biomacromolecules, 2009We report an FTIR spectroscopic technique combined with intracrystalline deuteration and rehydrogenation of cellulose samples to investigate the localization of I(alpha) and I(beta) domains within a cellulose microfibril obtained from I(alpha)-rich algae.
Junji Sugiyama, Yoshiki Horikawa
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Carbohydrate Polymers, 2020
Waste biomass of two major milk weeds was separately given combination of chemical-mechanical treatments in order to expose natural cellulosic micro and nano-fibrillated structures (MFCs and NFCs). Compositional and FTIR analysis were initially used to confirm the removal of impurities.
Mandeep Singh +2 more
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Waste biomass of two major milk weeds was separately given combination of chemical-mechanical treatments in order to expose natural cellulosic micro and nano-fibrillated structures (MFCs and NFCs). Compositional and FTIR analysis were initially used to confirm the removal of impurities.
Mandeep Singh +2 more
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Cellulose Microfibril Twist, Mechanics, and Implication for Cellulose Biosynthesis
The Journal of Physical Chemistry A, 2013All-atom molecular dynamics simulations with explicit water solvent were used to investigate the microstructure and conformational dynamics of cellulose Iβ microfibrils as a function of microfibril length and cross-sectional size and shape. Cellulose microfibrils quickly develop a right-handed twist, which then remains stable over the entire 10 ns ...
Oleg E. Shklyaev +6 more
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