摘要
用差示扫描量热法(DSC)、动态力学分析(DMA)和热重法(TGA)等研究了间规聚苯乙烯/等规聚丙烯(sPS/iPP)、sPS与聚-1-丁烯(B30)组成的嵌段共聚物和sPS/iPP/B30共混体系的热性能。结果表明sPS/iPP是不相容体系,B30与iPP可相容,B30可作为sPS/iPP共混物的相容剂。DSC和DMA分析结果表明,加入适量的B30时,sPS/iPP/B30共混物中iPP的玻璃化转变温度随B30加入量的增加而逐渐升高,而sPS的玻璃化转变温度则随B30加入量的增加而逐渐降低;TGA分析结果表明共混体系的热失重温度高于300℃,比iPP的高。
The thermal behaviors of syndiopolystyrene （ sPS ）/isotactic polypropylene （iPP） , a copolymet of sPS-b-1-polybutene （B 30）/iPP and sPS/ iPP/B 30 blends were investigated by differential scanning calorimetry （ DSC ） , dynamic mechanical analysis （ DMA ） and thermogravimetric analysis （TGA）. The results showed that B 30/iPP blends was compatible, while sPS/iPP blends was incompatible. Fortunately, B 30 could be used as compatilizer to improve the miscibility of sPS/iPP blends. DSC and DMA results showed that in B 30/iPP and sPS/ iPP/B 30 blends the onset of the iPP glass translation temperature region shifted toward the sPS glass translation temperature, and meanwhile, the sPS glass translation temperature shifted inward slightly. TGA results also confirmed that these blends of B 30/iPP and sPS/iPP/B 30 exhibited higher temperature of loss in weight（ more than 300 ℃ ） than that of/PP.
出处
《合成橡胶工业》
CAS
CSCD
北大核心
2007年第4期286-289,共4页
China Synthetic Rubber Industry
基金
国家自然科学基金资助项目(20574003)
北京市教委重点学科共建项目(XK100100540
XK100100640)
关键词
间规聚苯乙烯
等规聚丙烯
热性能
相容剂
syndiopolystyrene
isotactic polypropylene
thermal behavior
compatilizer
