线性低密度聚乙烯/橡胶共混体系的相容性研究

IR STUDY ON THE COMPATIBILITY IN LINEAR LOW DEN-SITY POLYETHYLENE/RUBBER BLENDS

本文用FTIR-ATR方法考察了线性低密度聚乙烯与天然橡胶(NR)及丁苯橡胶(SBR)两个共混体系,发现NR的835cm^(-1)和SBR的964cm^(-1)两个吸收峰因与聚乙烯共混而增高变窄,说明聚乙烯的非晶链段和橡胶分子之间存在一定程度的相互作用。

Two polyethylene/rubber blends, LLDPE/NR and LLDPE/SBR, were examined by FTIR-ATR spectroscopy and dynamic Tg measurements. It was found that the 835 cm-1 band of the NR and the 964cm-1 band of the SBR became higher and narrower as a result of blending with LLDPE, indicating certain extent of interaction between the amorphous molecular segments of PE and the rubber molecles. The Tg changes determined by dynamic techniques supported the result obtained by IR spectroscopy.