Abstract:
Method for continuously producing sponge bodies (1) made of regenerated cellulose using at least partially agglomerated pore inducers made of sodium sulphate decahydrate, in which at first a viscose solution is provided, the pore inducer is added to said viscose solution, the viscose solution is laid onto a conveyor belt which is continuously moving, wherein the viscose solution is led through baths on the conveyor belt, resulting in a porous mass made of regenerated cellulose.
Abstract:
A regenerated cellulose-encapsulated active substance and a method for encapsulating an active substance in a regenerated cellulose matrix are disclosed. The distribution of the active substance is preferably substantially homogeneous within the matrix of regenerated cellulose. The regenerated cellulose (i) has about the same molecular weight as the original cellulose from which it is prepared (ii) is substantially free of added substituent groups relative to the starting cellulose and is also substantially free of entrapped ionic liquid degradation products.
Abstract:
A composition fiber of cellulose-polyvinyl alcohol and a manufacturing method thereof are provided to prevent the elution of PVA(Polyvinylalcohol) component from generating into a washing cistern. The composition fiber comprises cellulose-polyvinyl alcohol of 70:30-99:1 wt %. In the polyvinyl alcohol, the syndiotactic diad group content is 53 to 63% and the degree of saponification is at least of 99.0%. In the cellulose, alpha-cellulose content is at least 96%. The cellulose-polyvinyl complex fiber has the dry intensity of 6 to 10 g/d, the dry elongation of 6 to 13% and the dry elasticity of 150 to 400 g/d. In the polyvinyl alcohol, viscosity-average degree of polymerization is 1500 to 1700. The mixing powder of the cellulose or syndiotactic polyvinyl alcohol is dissolved in the N-methylmorpholine-N-oxide solvent so that the dope is manufactured. The dope is spun by a spin nozzle. The spun filament is washed. At the washing process, the elution rate of polyvinyl alcohol is below 5%.
Abstract:
유도체화시키지 않고서도 셀룰로즈를 이온액에 용해시키고, 해롭거나 휘발성인 유기 용매의 사용을 요구하지도 않으면서 셀룰로즈를 일정 범위의 구조 형태로 재생시킨다. 셀룰로즈 용해도와 용액 특성은 이온액 구성분을 선택함으로써 제어할 수 있는데, 작은 양이온 및 할라이드 또는 슈도할라이드 음이온이 용액에 선호된다. 셀룰로즈, 이온액, 용해, 재생, 용해도, 용액 특성.