【摘要】 本文采用乌氏粘度计研究了聚合物浓度和温度对纤维素硫酸半酯钠盐溶液粘度的影响,分别考察了Arrhenius公式(η=A′e^E/RT)中表观流动活化能E和指前项A′与溶剂性质,聚合物浓度以及大分子形态等因素的关系,对于溶液特性粘度随温度的变化也作了初步的探索。更多还原

【Abstract】 Sodium-Cellulose sulfate half-ester (NaCS) is one of polyelectrolytes. We studied the viscosity of solutions pointed at the title in the range of 20-60℃ by using an ubbelohde viscometer. The appearant active energy E and the pre-exponential term A’ in Atrhenius equation (η=A’eE/RT) were inevstigated respectively. We found that they were connected with the solvent properties and concentration and formation of NaCS. We also explored tentatively the intrinsic viscosity varying with temperature at twp differet KCl concenty-atjons,更多还原