Abstract: The effect of solvent properties on molecular configuration and rheological behavior of ionic and non-ionic dilute polymer solutions was studied. Different inorganic salt was added to polyacrylamide (Separan AP30) aqueous solution. Thd molecular expansion factor, intrinsic viscosity were measured and calculated at various salt content, ionic valence and pH value of the solution. For non-ionic polymer, polyisobutylene was dissolved in different organic solvents. The molecular expansion factor decreased and the Maxwell relaxation time increased with increasing solvent viscosity. It It was shown that the designed rheological behavior of dilute polymer solution could be obtained via the method of changing the properties of solvent.

摘要： 本文研究了不同溶剂对离子性和非离子性高分子稀溶液的分子构型和流变性能的影响.在部分水解的聚丙烯酰胺水溶液中加入无机盐,测量并计算了分子扩张因数,特征粘度与盐浓度、盐离子价数、溶液pH值的关系.同时使用不同的有机溶剂测量聚丁烯溶液的Maxwell模型松弛时间和分子扩张因数.研究表明,高分子稀溶液可藉调整溶剂性质的方法以达到期望的流变特性.