UNIFIED THEORY OF NUCLEATION OF FOLDED-CHAIN CRYSTALS (FCCS) AND EXTENDED-CHAIN CRYSTALS (ECCS) OF LINEAR-CHAIN POLYMERS .2. ORIGIN OF FCC AND ECC

被引：137

作者：

HIKOSAKA, M ^{[1
]}

机构：

[1] TOKYO METROPOLITAN UNIV,FAC SCI,DEPT PHYS,SETAGAYA KU,TOKYO 158,JAPAN

来源：

POLYMER | 1990年 / 31卷 / 03期

关键词：

chain sliding diffusion within crystals; extended chain crystals; folded chain crystals; hexagonal form; nucleation rate; topological nature;

D O I：

10.1016/0032-3861(90)90385-C

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

An improved formulation for the nucleation rate j of a generalized sequential process is presented. The topological nature of linear chains was formulated by introducing activation energy for chain sliding diffusion within crystals. It is shown that when chain sliding diffusion is easy extended chain crystals (ECC) will be formed from folded chain crystals (FCC) by lamellar thickening, whereas when it is difficult FCCs will be formed, which shows the origin of ECC and FCC. It indicates that there is no essential difference in formation mechanism between FCC and ECC. It is predicted that polymers crystallized from the melt into hexagonal form will change continuously from FCC to ECC with increasing crystallization temperature. © 1990.

引用

页码：458 / 468

页数：11

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