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采用ZnCl2·4H2O溶液作为纤维素和壳聚糖的共同溶剂,制备纤维素/壳聚糖/ZnCl2·4H2O溶液,研究温度、原料组分和剪切频率等对纤维素/壳聚糖/ZnCl2·4H2O溶液流变性能的影响.研究结果表明:溶液中大分子链间缠结点在高温下更易打开,流动阻力下降;CS/BC分数增加时缠结作用强,流动阻力升高.故溶液的表观黏度、结构黏度指数、零切黏度、储能模量和损耗模量随着温度的升高而减小,随着壳聚糖/纤维素(CS/BC)分数的增加而增大;剪切频率增加,溶液的表观黏度减小,储能模量和损耗模量增大.
The solution of cellulose / chitosan / ZnCl2 · 4H2O was prepared by using ZnCl2 · 4H2O solution as the common solvent of cellulose and chitosan. The effects of temperature, raw material composition and shear frequency on cellulose / chitosan / ZnCl2 · 4H2O solution.The results show that the entanglement between macromolecular chains in solution is easier to open at high temperature and the flow resistance is decreased.The entanglement is stronger and the flow resistance is higher when the CS / Apparent viscosity, structural viscosity index, zero shear viscosity, storage modulus and loss modulus decreased with increasing temperature, and increased with the increase of chitosan / cellulose (CS / BC) fraction. Shear frequency increases, the apparent viscosity of the solution decreases, storage modulus and loss modulus increase.