نتایج جستجو برای: nanocrystalline cellulose

تعداد نتایج: 40113  

Journal: :Macromolecular Materials and Engineering 2018

2017
Jia Mao Hatem Abushammala Hubert Hettegger Thomas Rosenau Marie-Pierre Laborie

Imidazole is reported to be an effective reactant for the production of nanocellulose from hardwood pulp. The morphologies and surface properties of the nanocellulose can be simply tailored according to the water content in the imidazole system: with pure imidazole, cellulose nanofibrils (CNFs) in a yield of 10 wt % can be produced. With 25 wt % of water in imidazole, cellulose nanocrystals (CN...

Journal: :Carbohydrate polymers 2017
Yang Chen Chunjiang Xu Jing Huang Defeng Wu Qiaolian Lv

Rheological behavior, including linear and nonlinear, as well as transient rheology of nanocrystalline cellulose (NCC) suspensions was studied in this work. Two kinds of polymer solutions, aqueous poly(vinyl alcohol) (PVA) with flexible chain structure and aqueous carboxymethyl cellulose (CMC) with semi-rigid chain structure, were used as the suspension media to further explore the role that th...

Journal: :Nanoscale 2011
Denis Gebauer Vitaliy Oliynyk Michaela Salajkova Jordi Sort Qi Zhou Lennart Bergström German Salazar-Alvarez

Nanocellulose hybrids are promising candidates for biodegradable multifunctional materials. Hybrids of nanocrystalline cellulose (NCC) and amorphous calcium carbonate (ACC) nanoparticles were obtained through a facile chemical approach over a wide range of compositions. Controlling the interactions between NCC and ACC results in hard, transparent structures with tunable composition, homogeneity...

Journal: :Angewandte Chemie 2011
Dieter Klemm Friederike Kramer Sebastian Moritz Tom Lindström Mikael Ankerfors Derek Gray Annie Dorris

Cellulose fibrils with widths in the nanometer range are nature-based materials with unique and potentially useful features. Most importantly, these novel nanocelluloses open up the strongly expanding fields of sustainable materials and nanocomposites, as well as medical and life-science devices, to the natural polymer cellulose. The nanodimensions of the structural elements result in a high su...

2013
Lan Ma Yong Zhang Jianjun Cao Juming Yao

Cellulose nanocrystals (CNCs), also called cellulose nanowhiskers, cellulose nanorods, or nanocrystalline cellulose, were prepared from Phyllostachys heterocycla using a commercial cellulase for hydrolysis. The enzymatic hydrolysis process and application performance as well as the biocompatibility of the CNCs were investigated. Here, the cellulase hydrolysis conditions were optimized at a cell...

Journal: :International Journal of Technology: IJ Tech 2023

The synthesis of modified carbon dots (N-CDs) from nanocrystalline cellulose, as the source, with combination urea and ethylenediamine, nitrogen dopant agents, was successfully carried out by pyrolysis at 300°C. N-CDs

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