Results 21 to 30 of about 6,124 (238)
Strengthening of Wood-Like Materials via Densification and Nanoparticle Intercalation
Nanomaterials, 2020 Recently, several chemical and physical treatments were developed to improve different properties of wood. Such treatments are applicable to many types of cellulose-based materials.
David Novel +8 more
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Preferred crystallographic orientation of cellulose in plant primary cell walls
Nature Communications, 2020 Cellulose is synthesized as microfibrils of β-1,4-linked glucan chains arranged in a crystalline lattice. Here Ye et al. use grazing incidence wide angle X-ray scattering to show that cellulose crystals are preferentially orientated parallel to the plant
Dan Ye +14 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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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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Nanomaterials, 2022 Cellulose nanofibrils can be derived from the native load-bearing cellulose microfibrils in wood. These microfibrils are synthesized by a cellulose synthase enzyme complex that resides in the plasma membrane of developing wood cells.
Simon Jonasson +4 more
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Stochastic Model of Lignocellulosic Material Saccharification [PDF]
, 2021 The processing of agricultural wastes towards extraction of renewable resources is recently being considered as a promising alternative to conventional biofuel production processes. Agricultural residues represent an abundant and unexploited raw material that intrinsically contains chemical energy in the form of polysaccharides.
arxiv +1 more source
Cellulose synthase complex organization and cellulose microfibril structure [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2017 Cellulose consists of linear chains of β-1,4-linked glucose units, which are synthesized by the cellulose synthase complex (CSC). In plants, these chains associate in an ordered manner to form the cellulose microfibrils. Both the CSC and the local environment in which the individual chains coalesce to form the cellulose microfibril ...
Simon Turner, Manoj Kumar
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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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Lockhart with a twist: modelling cellulose microfibril deposition and reorientation reveals twisting plant cell growth mechanisms [PDF]
, 2020 Plant morphology emerges from cellular growth and structure. The turgor-driven diffuse growth of a cell can be highly anisotropic: significant longitudinally and negligible radially. Such anisotropy is ensured by cellulose microfibrils (CMF) reinforcing the cell wall in the hoop direction.
arxiv +1 more source
Subcritical crack growth in fibrous materials [PDF]
Europhysics Letters (EPL) 4, 74 (15/05/2006) 595, 2007 We present experiments on the slow growth of a single crack in a fax paper sheet submitted to a constant force $F$. We find that statistically averaged crack growth curves can be described by only two parameters : the mean rupture time $\tau$ and a characteristic growth length $\zeta$.
arxiv +1 more source