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%.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
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
关键词
β-聚丙烯
苯乙烯系聚合物
结晶与熔融
结晶形态
β-polypropylene
styrenic polymers
crystallization and melting
crystlline morphology
