Abstract:
[Object] The present invention provides a sulfonated fine cellulose fiber having excellent viscosity and the like, as well as a sulfonated fine cellulose fiber production method capable of efficiently producing the sulfonated fine cellulose fibers. [Method for Achieving the Object] A fine cellulose fiber obtained by fibrillating a cellulose fiber wherein a part of the hydroxyl groups of the fine cellulose fiber is substituted with sulfo groups, and an introduction amount of sulfur attributable to the sulfo groups is higher than 0.42 mmol/g. The fine cellulose fiber comprises a plurality of unit fibers and has an average fiber width of 30 nm or less. A dispersion liquid in which the fine cellulose fiber is dispersed in a water-soluble solvent at a solid concentration of 0.5% by mass has a viscosity of 5,000 mPa·s or more at 25°C. This makes it possible to obtain the desired viscosity when the fine cellulose fibers are dispersed in a dispersion liquid.
Abstract:
Methods for isolating cellulose nanocrystals (CNCs) from the plant Miscanthus Giganteus (MxG). Impressive yields are obtained through a combination of processing steps including base hydrolysis, bleaching and acid hydrolysis. MxG-CNCs are produced having high aspect ratios, are biorenewable and can be used for a wide range of applications such as nanofillers in composites. MxG-CNC-containing composites are also disclosed.
Abstract:
Anti-filming compositions and methods are provided. More particularly, compositions and methods for inhibiting film formation on surfaces, especially hard surfaces such as dishware, tableware and glassware, and soft surfaces such as fabrics and textiles are provided.
Abstract:
This invention encompasses methods for manufacturing purified, high molecular weight sulfated polysaccharide compositions that inhibit pancreatic cholesterol esterase and lower cholesterol in the blood stream.
Abstract:
A cellulose sulfate salt having a heparinic action is provided, which satisfies requirements of 0.8 ≦ "F" ≦ 2.6, "f 2 " ≧ "f 3 " and "f 2 " ≧ "f 6 " wherein "f 2 ", "f 3 " and "f 6 " stand for probability of substitution of atoms H in the OH groups bonded to the C 2 , C 3 and C 6 positions of the glucopyranose ring unit by sulfuric acid radicals, respectively, and "F" stands for the total substitution degree which is the sum of "f 2 ", "f 3 " and "f s ". The cellulose sulfate salt is prepared by reacting a cellulose having a crystal form I with an S0 3 /amine or S0 3 /amide complex in an amount of 2 to 4 mole equivalents per glucose unit of the cellulose at -10°C to 40°C to form a gelatinous product; adding water to the gelatinous product in an amount 0.1 to 5 times the amount of the starting cellulose used for the reaction; treating the mixture at a high temperature to relatively reduce the values of "«f 6 " and "f 3 " among the values of "f 2 ", "f 3 " and "f 6 "; neutralizing, precipitating and drying the so obtained crude cellulose sulfate; dissolving the crude cellulose sulfate in water again; treating the solution with an adsorbent; and subjecting the treated cellulose sulfate to precipitation, drying, re-dissolution, dialysis, precipitation and then drying.
Abstract:
In a first aspect, the present invention relates to a process for the preparation of magnetic sulfated cellulose particles. In particular, the present invention relates to the preparation of magnetic sulfated cellulose particles under specific reaction conditions allowing providing said magnetic sulfated cellulose particles being particularly useful in further process steps including enrichment of proteinaceous compositions. In another aspect, the present invention relates to the magnetic sulfated cellulose particles itself as well as its use for isolation of proteinaceous compositions including composition of virus proteins and/or non-virus proteins as well as whole virus and for enrichment steps in in vitro diagnostic methods. Finally, the present invention provides a method for isolating whole virus or virus proteins as well as isolating heparin binding molecules comprising the step of affinity purification using the magnetic sulfated cellulose particles according to the present invention. The present invention relates further to a bioreactor system comprising a bioreactor and a magnetic separation unit useful for separating magnetic sulfated cellulose particles according to the present invention.
Abstract:
A substituted cellulose ester having a cellulose backbone with an organic ester substituent and an inorganic ester substituent derived from the inorganic ester oxoacid catalyst may be utilized in adhesive compositions and articles produced therewith. Producing a substituted cellulose ester may, in some embodiments, involve providing a cellulose ester mixture that comprises a cellulose ester and a solvent; and hydrolyzing a mixture that comprises the cellulose ester mixture, water, and an inorganic ester oxoacid catalyst so as to yield a substituted cellulose ester having a cellulose backbone with an organic ester substituent and an inorganic ester substituent derived from the inorganic ester oxoacid catalyst.