摘要
碱溶性羟乙基纤维素(HEC)具有独特的碱溶性和成纤性能,采用气固相反应制备碱溶性HEC.研究了碱溶性HEC纺丝原液在不同温度、不同质量分数和不同角频率下的动态黏度特性,表明HEC/NaOH溶液为切力变稀的非牛顿流体.溶液动态黏度随HEC质量分数的增加呈非线性增大.由于HEC的半刚性分子链,溶液黏度对角频率,尤其对温度的变化不敏感.
Alkali-soluble hydroxyethyl cellulose （HEC） has unique properties of alkali solubility and fiberforming. Alkali-soluble HEC was one of the cellulose derivatives with lower etherification degree, which was made by the gas-solid reaction of cellulose and ethylene oxide. The dynamic viscous character under different temperature, different concentration and different angular frequency were studied. The results showed that HEC/NaOH solution was a shear-thinning non-Newtonian fluid. The dynamic viscosity of the HEC solution increased nonlinearly with the increase of the HEC mass fraction. The viscosity of the solution was not sensitive to the change of testing angular frequency and temperature because of the semirigid chain of HEC molecular.
出处
《东华大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第3期256-259,共4页
Journal of Donghua University(Natural Science)
