SOLID-STATE EXTRUSION OF POLY(VINYLIDENE-FLUORIDE) .1. RAM AND HYDROSTATIC EXTRUSION

被引：38

作者：

MEAD, WT ^{[1
]}

ZACHARIADES, AE ^{[1
]}

SHIMADA, T ^{[1
]}

PORTER, RS ^{[1
]}

机构：

[1] UNIV MASSACHUSETTS,DEPT POLYMER SCI & ENGN,MAT RES LAB,AMHERST,MA 01003

来源：

MACROMOLECULES | 1979年 / 12卷 / 03期

关键词：

D O I：

10.1021/ma60069a026

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Oriented films and fibers of poly(vinylidene fluoride) have been prepared by solid state extrusion and hydrostatic extrusion to an extrusion draw ratio of 8. The properties of the fibers and films have been assessed by several techniques including infrared spectroscopy, thermal analysis, and X-ray. A maximum birefringence of 0.039, a modulus of 3.5 GPa, a melting point increase of 5 °C, and a crystallinity of 50% were obtained for the extrudates. Shrinkage of fibers observed along the chain orientation axis is possibly due to retractive forces of the deformed noncrystalline phase. Infrared bands of the ±- and ²-polymorphic phases showed that extrusion produced a conversion from the ± to the ² phase. © 1979, American Chemical Society. All rights reserved.

引用

页码：473 / 478

页数：6

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