نتایج جستجو برای: cellulose nanofiber
تعداد نتایج: 33725 فیلتر نتایج به سال:
On the development of flexible electronics, a highly flexible nonvolatile memory, which is an important circuit component for the portability, is necessary. However, the flexibility of existing nonvolatile memory has been limited, e.g. the smallest radius into which can be bent has been millimeters range, due to the difficulty in maintaining memory properties while bending. Here we propose the ...
Cellulose is crystallized by plants and other organisms into fibrous nanocrystals. The mechanical properties of these nanofibers the formation helical superstructures with energy dissipating adaptive optical depend on ordering polysaccharide chains within nanocrystals, which typically measured in bulk average. Direct measurement local chain arrangement has been elusive. In this study, we use em...
A powerful replica molding methodology to transfer on-demand functional topographies to the surface of bacterial cellulose nanofiber textures is presented. With this method, termed guided assembly-based biolithography (GAB), a surface-structured polydimethylsiloxane (PDMS) mold is introduced at the gas-liquid interface of an Acetobacter xylinum culture. Upon bacterial fermentation, the generate...
In this study microcrystalline cellulose (MCC) was oxidized by 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation. The treated cellulose slurry was mechanically homogenized to form a transparent dispersion which consisted of individual cellulose nanofibers with uniform widths of 3-4 nm. Bio-nanocomposite films were then prepared from a polyvinyl alcohol (PVA)-chitosan (CS) ...
With TEMPO oxidation, it was possible to incorporate iron nanostructures into a cellulose nanofiber matrix. FTIR spectra showed the functional groups present in films. The combination of both and CNF confers films good electrochemical activity; characterization (CV) that they stability reduction process at potential 0–1 V, with materials 5% 10% being most active. Pb shows film is material highe...
Hierarchical, titania-coated, nanofibrous, carbon hybrid materials were fabricated by employing natural cellulosic substances (commercial filter paper) as a scaffold and carbon precursor. Ultrathin titania films were firstly deposited by means of a surface sol-gel process to coat each nanofiber in the filter paper, and successive calcination treatment under nitrogen atmosphere yielded the titan...
This study investigated the use of cotton linter fiber as a raw material for manufacturing carboxymethylated cellulose nanofiber (CM-CNF). Cotton mixed pulp (CLMP) and hardwood bleached kraft (HwBKP) were used preparing carboxymethlyated (CMC) based on degree carboxymethylation (CM) considering dosage sodium hydroxide: monochloroacetic acid: low high CMs. After CM reactions, we evaluated length...
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