PP／苯乙烯系聚合物共混物中的β-成核剂作用的研究  

Investigation on β-nucleation in Polypropylene Blends with Styrenic Polymers

作　　者：王春广[1] 章自寿[1] 杜一飞[1] 武理俊[1] 麦堪成[1] 

机构地区：[1]中山大学化学与化学工程学院材料科学研究所//教育部聚合物基复合材料及功能材料重点实验室//新型聚合物材料设计合成与应用广东省高校重点实验室,广东广州510275

出　　处：《中山大学学报（自然科学版）》2012年第2期54-58,共5页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金资助项目(51173208,50873115);高等学校博士生学科点专项科研基金资助项目

摘　　要：该文采用负载型β-成核剂成核PP分别与PS、AS、ABS共混制备了β-PP共混物。用DSC和WAXD研究了苯乙烯系聚合物对β-成核PP中的β-成核作用的影响和β-PP共混物的结晶行为、结晶形态、熔融特性和β-晶含量。观察到随着苯乙烯系聚合物用量增加,β-成核PP的结晶温度稍有降低,尤其ABS。苯乙烯系聚合物加入不影响β-成核PP的熔融特性,呈现三个熔融峰。β-成核PP共混物的β-晶含量随着苯乙烯系聚合物用量增加而降低,但可得到β-晶含量高于80%以上β-PP共混物。β-Polypropylene （PP） blends were prepared with supported β-nucleator nucleated PP and PS, AS, ABS, respectively. The β-nucleation, crystallization behavior, melting characteristic and 13- crystal content were investigated by DSC and WAXD. It Was observed that the crystallization temperaturesof β-nucleated PP slightly decreased with increasing styrenic polymers content, especially ABS. Addition of styrenic polymers had no influence on melting characteristic of β-nucleated PP, and three meltingpeaks were observed. Although the content of β-crystal in β-nucleated PP blends slightly decreased with increasing styrenic polymers content, β-PP blends were obtained with β-crystal content above 80%.

关 键 词：β-聚丙烯 苯乙烯系聚合物 结晶与熔融 结晶形态 

分 类 号：O631.3[理学—高分子化学]