TRANSCRYSTALLINITY PHENOMENA IN A POLYPROPYLENE KEVLAR FIBER SYSTEM .1. INFLUENCE OF CRYSTALLIZATION CONDITIONS

被引：42

作者：

AVELLA, M

DELLAVOLPE, G

MARTUSCELLI, E

RAIMO, M

机构：

[1] Istituto di Ricerche su Tecnologia dei Polimeri, C.N.R, Naples, 80072, Arco Felice

来源：

POLYMER ENGINEERING AND SCIENCE | 1992年 / 32卷 / 05期

关键词：

D O I：

10.1002/pen.760320511

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The isothermal crystallization from the melt of isotactic polypropylene in the presence of Kevlar 49 fibers has been investigated. The nucleating ability of the fibers was demonstrated, and the presence of extensive transcrystalline regions was related to crystallization parameters, such as crystallization temperature, melt precrystallization temperature, and residence time at precrystallization temperature. The results are discussed in terms of the presence of heterogeneities in the bulk and preformed self-seeded nuclei located in the anfractuosities of fiber surfaces.

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页码：376 / 382

页数：7

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