Strain-induced disorder-order crystalline phase transition in nylon 6 and its miscible blends

被引：29

作者：

Miri, V.

Persyn, O.

Lefebvre, J. M.

Seguela, R.

Stroeks, A.

机构：

[1] Univ Sci & Tech Lille Flandres Artois, Lab Struct & Proprietes Etat Solide, CNRS, UMR 8088, F-59655 Villeneuve Dascq, France

[2] DSM Res & Patents, NL-6160 MD Geleen, Netherlands

来源：

POLYMER | 2007年 / 48卷 / 17期

关键词：

nylon; 6; crystalline phase transitions; tensile drawing;

D O I：

10.1016/j.polymer.2007.06.039

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

This study deals with the structural modifications of a polyamide 6 (PA6) and a miscible blend of this PA6 with an amorphous semi-aromatic copolyamide (PA6/aPA) under tensile drawing. By combining X-ray diffraction and FTIR spectroscopy, the crystalline phase transitions have been investigated as a function of drawing temperature and strain for both systems. A mechanically induced P-a transition has been clearly identified for PA6 at 100 degrees C and above, whereas the PA6/aPA blend undergoes the same evolution at 130 degrees C. These threshold temperatures are very close to the upper limit of the glass-rubber transition of the two systems. This is evidence that the amorphous chain mobility plays a major role on the reorganization capability of the crystalline phase towards its stable form. Further discussion is made regarding the physical origin of this phenomenon. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：5080 / 5087

页数：8

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