Polymorphic superelasticity in semicrystalline polymers

被引：31

作者：

Auriemma, Finizia

De Rosa, Claudio

Esposito, Simona

Mitchell, Geoffrey R.

机构：

[1] Univ Naples Federico II, Dipartimento Chim, I-80126 Naples, Italy

[2] Univ Reading, Ctr Polymer Sci, JJ Thomson Phys Lab, Reading RG6 6AF, Berks, England

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2007年 / 46卷 / 23期

关键词：

mechanical properties; phase transitions polymers; polymorphism; X-ray diffraction;

D O I：

10.1002/anie.200605021

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Figure Presented) Under stress: A high level of crystallinity in polymers does not impair ductility and elastic performance if a stress-induced martensitic crystal-crystal phase transition takes place (see picture; c: unit cell axis, h: helical form, t: trans-planar form). This type of elasticity is not merely entropic but also partly enthalpic, and therefore similar to the superelasticity of shape-memory alloys. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：4325 / 4328

页数：4

共 13 条

[1] New concepts in thermoplastic elastomers: The case of syndiotactic polypropylene, an unconventional elastomer with high crystallinity and large modulus [J].