等规聚苯乙烯的单分子链及单链单晶的尺寸判据  

THE SIZE JUDGEMENT OF SINGLE CHAIN AND SINGLE CHAIN SINGLE CRYSTAL OF ISOTACTIC POLYSTYRENE

作　　者：陈尔强[1] 胡秀兰[1] 卜海山[1] 许胜勇[1] 

机构地区：[1]复旦大学材料科学系,中国科学院北京电子显微镜实验室,华东工业大学

出　　处：《高分子学报》1995年第1期41-48,共8页Acta Polymerica Sinica

基　　金：国家自然科学基金;国家基础性重大关键项目

摘　　要：将等规聚苯乙烯配成苯的稀溶液，在水面上逐滴扩散，制备得到等规聚苯乙烯的超细微粒，并将微粒在４４８．２Ｋ等温结晶．用透射电镜对非晶态和昌态的粒子进行研究．由电镜测量得到的等规聚苯乙烯的分子量及分子量分布与其ＧＰＣ表征值基本相符，证明我们所得到的超细微粒是单分子尺寸的．Ultrafine particles were obtained by spreading dilute solution of isotactic polystyrene in benzene on a water surface, and the resulted particles were crystallized at 448.2K. Transmission electron microscopy (TEM) was used to observe both uncrystallized and crystallized particles. The molecular weight and molecular weight distribution of Ultrafine particles measured by TEM are approximately in agreement with that from GPC measurement. Therefore, the ultrafine particles are of single chain size.

关 键 词：聚苯乙烯 单分子链 单链单晶 透射电镜 

分 类 号：O632.13[理学—高分子化学] O785[理学—化学]