高等学校化学学报2001，Vol.22Issue(2)：303-306,4.
物理老化无规聚苯乙烯屈服机理的研究
A Study of Stress-Yielding Mechanism of Aged Atactic Polystyrene
摘要
Abstract
The stess yielding mechanism of aged atactic polystyrene(α-PS) was studied by use of mechanical tension, differential scanning calorimetry(DSC) and solvent-swelling. The viewpoint of cohensional entaglement(CE) was empolyed to interpret the experimental results, which indicated that the stress yielding of aged α-PS was the destruction of the CE formed during aging. CE was a kind of ordered structure, which was formed by local parallel alignment of several segments of several nearest neighboring chains. Its interaction energy was so low that heating beyond the Tg region, mechanical drawing over the yield point and solvent swelling all could destroy it completely.关键词
无规聚苯乙烯/应力屈服/凝聚缠结分类
化学化工引用本文复制引用
宋锐,赵军,杨娟,令狐欣,高金贵,范庆荣..物理老化无规聚苯乙烯屈服机理的研究[J].高等学校化学学报,2001,22(2):303-306,4.基金项目
国家基础研究重大项目“高分子凝聚态基本物理问题研究”资助. （）
