Flow-induced crystallization in poly-1-butene: the shish-kebab transition

被引：12

作者：

Van Puyvelde, P. ^{[1
]}

Langouche, F. ^{[2
]}

Baert, J. ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Dept Chem Engn, B-3001 Louvain, Belgium

[2] Solvay Cent Lab, B-1120 Brussels, Belgium

来源：

INTERNATIONAL JOURNAL OF MATERIAL FORMING | 2008年 / 1卷 / Suppl 1期

关键词：

Flow-induced crystallization; Birefringence; Shish-kebab; Critical work;

D O I：

10.1007/s12289-008-0303-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, flow-birefringence measurements have been performed to monitor the orientation development during application of high shear flow in undercooled polymer melts. It is demonstrated that a critical shear rate and a critical shear strain are required in order to form strongly oriented shish-kebab structures. After reaching such critical conditions, the crystallization kinetics - measured both by means of birefringence as well as transmitted intensity measurements - is drastically increased. The results generated in this work suggest that Janeschitz-Kriegl's [1] hypothesis about the need for a specific amount of work required to form shish-kebab structures is valid, at least for the conditions investigated.

引用

页码：667 / 670

页数：4

共 6 条

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