摘要
本文采用5种已知分子量的单分散聚苯乙烯(PS)作为标准试样,在N,N-二甲基乙酰胺(DMAc)为流动相的体系中,进行凝胶渗透色谱(GPC)的淋洗实验。通过对5组不同分子量的由二苯醚四酸二酐(ODPA)和二氨基二苯醚(ODA)在N,N-二甲基乙酰胺(DMAc)体系中聚合而成的聚酰胺酸进行实验,测定PAA(ODPA/ODA)的分子量及特性粘度[η],以各个样品的lg[η]对lg M作图,得到的直线斜率是α,截距是lg K。最终得到PAA(ODPA/ODA)在DMAc体系中的Mark-Houwink方程参数K1和α1,K2和α2的值。
Five monodisperse polystyrene（PS）with known molecular weight were used as standard sample in N, N- dimethylacetamide（DMAc） as the mobile phase in the system, tested by gel permeation chromatography（GPC）of the leaching experiments. The different molecular weight of five diphenyl ether polyamide acid were determined by the gel permeation chromatography（GPC）and viscosity method. Logarithm plot was obtained by lg[η]vs lgM, α and lgK were obtained. The PAA of Mark-Houwink constants K1 and α1,K2 and α2 were obtained.
出处
《化学工程师》
CAS
2015年第8期13-15,共3页
Chemical Engineer
