Blends of Polypropylene and Syndiotactic 1,2-Polybutadiene:Morphology,Crystallization Behaviors and Mechanical Properties  

作　　者：ZHANG Cheng-wu HUANG Yu-dong WANG Sheng-chao ZHANG Chun-yu ZHANG Xue-quan 

机构地区：[1]Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, P. R. China [2]Heilongjiang Provincial Plastics Industry Scientific Research Institute, Harbin 150001, P R. China [3]Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changehun 130022, P. R. China

出　　处：《Chemical Research in Chinese Universities》2008年第5期640-643,共4页高等学校化学研究（英文版）

基　　金：the Natural Science Foundation of Heilongjiang Province,China(No.B2005-09).

摘　　要：Morphologies,crystallization behavior and mechanical properties of polypropylene（PP）/syndiotactic 1,2-polybutadiene（s-1,2 PB）blends were investigated.Morphology observation shows the well dispersed domains of s-1,2 PB in PP matrix with the rather small domain sizes from 0.1 to 0.5μm when the s-1,2 PB content increases from 5%to 20%（mass fraction）in the blends,and the phase structure tends to become co-continuous as s-1,2 PB content further increases.Crystallization temperature（Tc）of PP component in the blends is fluctuated with the variation of s-1,2 PB content in the blends.Compatibilization,to some extent,between the two components is inferred from the examination of both morphology and crystallization behavior.Improvement of impact strength of PP toughened by s-1,2 PB becomes significant only in the case of s-1,2 PB content above 20%（mass fraction）.Morphologies,crystallization behavior and mechanical properties of polypropylene（PP）/syndiotactic 1,2-polybutadiene（s-1,2 PB）blends were investigated.Morphology observation shows the well dispersed domains of s-1,2 PB in PP matrix with the rather small domain sizes from 0.1 to 0.5μm when the s-1,2 PB content increases from 5%to 20%（mass fraction）in the blends,and the phase structure tends to become co-continuous as s-1,2 PB content further increases.Crystallization temperature（Tc）of PP component in the blends is fluctuated with the variation of s-1,2 PB content in the blends.Compatibilization,to some extent,between the two components is inferred from the examination of both morphology and crystallization behavior.Improvement of impact strength of PP toughened by s-1,2 PB becomes significant only in the case of s-1,2 PB content above 20%（mass fraction）.

关 键 词：Syndiotactic 1 2-polybutadiene POLYPROPYLENE CRYSTALLIZATION SEM DSC 

分 类 号：O62[理学—有机化学]