Structural development during the early stages of polymer melt spinning by in-situ synchrotron X-ray techniques

被引：125

作者：

Schultz, JM ^{[1
]}

Hsiao, BS

Samon, JM

机构：

[1] Univ Delaware, Dept Chem Engn, Newark, DE 19716 USA

[2] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA

来源：

POLYMER | 2000年 / 41卷 / 25期

关键词：

fiber spinning; in-situ study; synchrotron X-ray;

D O I：

10.1016/S0032-3861(00)00232-9

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Recent results from melt spinning of several polymers (nylon 6, polyethylene:, poly(vinylidene fluoride) using in-situ simultaneous synchrotron small- and wide-angle X-ray scattering (SWAXS) techniques are summarized. Here, mechanisms of early stages of structural and morphological development during crystallization under melt flow are probed. We find that a model consisting of the formation of defective shish-like structures, followed by the formation of kebab crystals is most consistent with our results. We have further verified that the defective shish structure cannot be detected by the wide-angle X-ray scattering (WAXS) technique, but is visible by small-angle X-ray scattering (SAXS). This model has been proposed by Keller et al., for structural development during elongational flow. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：8887 / 8895

页数：9