摘要
为了消除酚类和其它混合溶剂体系的不稳定性以及端基滴定法存在的数据偏低的缺点,本文研究采用单一的四氯乙烷为溶剂测定其特性粘度,并用光散射法测定其分子量,订定了25℃下PBT-四氯乙烷体系的[η]—(?)_w的关系式为: [η]=3.928×10^(-2)(?)_w^(0.677) (毫升/克)并探讨了其稀溶液体系的某些特性。
In order to get rid of the unstability of phenolic and other mixed solvents systems and the unreliability of end group titrimeteric method, this paper introduces the application of tetrachloroethane as a single solvent to determining the intrinsic viscosity, and the molecular weight by light scattering. The relationship of PBT-tetrachloroethane system [η]-(?)_w at 25℃ ([η]=3.928×10^(-2(?)_w 0.677) ml/g) was determined, and some characters of dilute solution system were also discussed.
出处
《塑料工业》
CAS
CSCD
北大核心
1989年第2期40-43,共4页
China Plastics Industry
