摘要
用正电子湮没寿命谱仪对聚丙烯PP和三元乙丙橡胶EPDM的共混体系进行了测量.实验研究表明,正电子湮没寿命灵敏地反映了在95—370K温度范围内PP/EPDM共混物的微观结构变化.经分析得到PP/EPDM是两相共混体系的结论.
The blend of polypropylene (PP) and ethylene--propylene-diene terpolymer (EPDM) was studied using the positron annihilation technique. It was found that the positron lifetimes reflect sensitively the microstructural changes of the blend at temperatures 95-370K and that the blend is a bi-phase system.
出处
《华南师范大学学报（自然科学版）》
CAS
1993年第2期1-4,共4页
Journal of South China Normal University(Natural Science Edition)
关键词
正电子湮没
结构转变
正电子素
高聚物
微观结构
positron annihilation
polymer
structural transition
positronium
free volume
