Abstract:
Disclosed herein are methods for producing nanocrystalline cellulose and oxidized nanocrystalline cellulose from biomass. Also disclosed are methods for forming materials, and the materials formed from a fibrin matrix that incorporates the nanocrystalline cellulose and/or the oxidized nanocrystalline cellulose.
Abstract:
Provided are an optical film using a cellulose derivative, useful in an image display device, such as a liquid crystal display or the like, a retardation film and a polarization film using the optical film, and a liquid crystal display having excellent view angle characteristics by using these films, while the optical film uses a cellulose derivative resin in which some hydrogen atoms of hydroxy groups of cellulose are substituted with three or more kinds of substituents.
Abstract:
The invention comprises an environmentally benign method for the direct in situ preparation of copper nanoparticles (CuNPs) in paper by reducing sorbed copper ions with ascorbic acid. Copper nanoparticles were quickly formed in less than 10 minutes and were well distributed on the paper fiber surfaces. Paper sheets were characterized by x-ray diffraction, scanning electron microscopy, energy dispersive x-ray spectroscopy, and atomic absorption spectroscopy. Antibacterial activity of the CuNP sheets was assessed for by passing Escherichia coli bacteria suspensions through the papers. The effluent was analyzed for viable bacteria and copper release. The CuNP papers with higher copper content showed a high bacteria reduction of log 8.8 for E. coli. The paper sheets containing copper nanoparticles were effective in inactivating the test bacteria as they passed through the paper. The copper levels released in the effluent water were below the recommended limit for copper in drinking water (1 ppm).
Abstract:
A (meth)allylsilane compound chemically bonded to various alcohol derivatives including polyol derivatives such as saccharides, is raw material used to cause a substrate to express functionalities such as a defogging property and separation characteristics for column chromatography, can be easily prepared, is easily purified, and is stable and easy to handle, and a functional material in which those functionalities are expressed, while silyl group-containing groups are conveniently carried at a high density on the surface of the substrate, by using the (meth)allylsilane compound as a silane coupling agent for silane-coupling to the substrate. The (meth)allylsilane compound includes a (meth)allylsilyl group-containing alkyl group or a (meth)allylsilylalkyl group-containing aralkyl group that is bonded to an alcohol derivative. In the functional material, the silane coupling agent is ether-bonded to surface hydroxyl groups exposed on a substrate through the surface hydroxyl groups by silane coupling to have an ether bond on the functional material.
Abstract:
The invention provides a wound dressing material comprising a complex of an anionic polysaccharide with silver, wherein the material comprises from about 0.1 wt. % to about 3 wt. % of silver. Also provided are wound dressings comprising such materials, and the use of such materials in medicine.
Abstract:
A nerve dysfunction repairing material including a hydrogel of a polysaccharide derivative that has, in a 0.5 wt % aqueous solution, a complex modulus of 1 to 1000 N/m2 and a loss factor of 0.01 to 2.0 as measured at an angular velocity of 10 rad/sec using a dynamic viscoelasticity measuring apparatus. The nerve dysfunction repairing material can be a hydrogel injectable through a syringe, has excellent retention in the body, and has a restorative effect on the function of damaged or degenerated nerves.
Abstract translation:一种神经功能障碍修复材料,其包括多糖衍生物的水凝胶,所述多糖衍生物在0.5重量%水溶液中的复数模量为1〜1000N / m 2,损失因子为0.01〜2.0,以角速度为10rad /秒,使用动态粘弹性测量装置。 神经功能障碍修复材料可以是通过注射器注射的水凝胶,在身体中具有优异的保留性,并且对损伤或退化的神经的功能具有恢复性作用。
Abstract:
A cellulose derivative which has a suitable elastic modulus and viscosity when it is dissolved in water and is useful as an adhesion barrier.The cellulose derivative has a molecular weight of 5×103 to 5×106 and is composed of a repeating unit represented by the following formula (1): wherein R1, R2 and R3 are each independently selected from the group consisting of the following formulas (a), (b), (c) and (d) in predetermined amount: (X in the formula (c) is an alkali metal, and R4 and R5 in the formula (d) are each independently an alkyl group or alkenyl group having 10 to 28 carbon atoms).
Abstract:
The present invention describes a process for silylating polysaccharides, oligosaccharides or disaccharides or derivatives thereof by dissolving these in an ionic liquid and reacting them with a silylating agent.
Abstract:
A film substrate of an electronic displaying element, an electronic optical element, a touch panel, or a solar battery is disclosed which is composed mainly of an organic polymer having water solubility of 0 to 5 g based on 100 g of 25° C. water and having acetone solubility of 25 to 100 g based on 100 g of 25° C. acetone and an inorganic condensation polymer of a reactive metal compound capable of being condensed.