【摘要】 <正> 凝胶色谱与激光小角光散射(GPC-LALLS)联用是高聚物表征的有效手段,但将它用来研究橡胶的报导还很少见,这是由于实践中存在着一定的团难。对顺丁橡胶的表征国外曾有一些报导。GPC-LALLS法不仅可以测定试样的几种平均分子量,更有意义的是可以直接测得谱图各区间的分子量,而且溶质的分子量越大,散射光强越高,更多还原

【Abstract】 Cis 1,4-polybutadiene samples prepared with different catalysts haye dif-ferent physical, mechanical properties and processibility as well.It is relatedto their molecular weight distribution, microstructure and contents of thebranched chains. The present paper describes the characterization of variouskinds of cis 1,4-polybutadiene by gel permeation chromatography (GPC) co-upled with low angle laser light scattering spectrometry (LALLS). Satisfa-ctory results are obtained for both linear and branched samples.更多还原