Effects of polydispersity index and molecular weight on crystallization kinetics of syndiotactic polystyrene (sPS)

被引：8

作者：

Chen, Chen-Ming ^{[1
]}

Hsieh, Tsung-Eong ^{[1
]}

Ju, Ming-Yih ^{[2
]}

机构：

[1] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu, Taiwan

[2] Ind Technol Res Inst, Mat & Chem Res Labs, Hsinchu 30043, Taiwan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 480卷 / 02期

关键词：

Polymers; Elastomers and plastics; Crystal growth; Kinetics; IDENTIFICATION; CRYSTALS; FORM;

D O I：

10.1016/j.jallcom.2009.02.003

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Isothermal crystallization kinetics of syndiotactic polystyrene (sPS) is reported in this work with Avrami analytical method. it was found that the spherulite growth rate and overall crystallization rate depend on the crystallization temperatures, average molecular weight ((M) over bar (W)) and polydispersity index (PDI). The experimental results for the melt and cold crystallization processes of sPS revealed that the PDI and (M) over bar (W) exhibit pivotal effects on the crystallization rate, which increases with the decrease of (M) over bar (W) and PDI. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：658 / 661

页数：4

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