Thermomechanical properties and shape memory effect of PET-PEG copolymers cross-linked with pentaerythritol

被引：15

作者：

Shim, Yong Shik

Chun, Byoung Chul ^{[1
]}

Chung, Yong-Chan

机构：

[1] Univ Suwon, Dept Polymer Engn, Kyonggi Do 445743, South Korea

[2] Seoul Natl Univ, Intelligent Text Syst Res Ctr, Seoul 151742, South Korea

[3] Univ Suwon, Dept Chem, Kyonggi Do 445743, South Korea

来源：

FIBERS AND POLYMERS | 2006年 / 7卷 / 04期

关键词：

shape memory; cross-linking; shape recovery; shape retention; pentaerythritol;

D O I：

10.1007/BF02875762

中图分类号：

TB3 [工程材料学]; TS1 [纺织工业、染整工业];

学科分类号：

0805 ; 080502 ; 0821 ;

摘要：

Poly(ethylene terephthalate) (PET) and poly(ethylene glycol) (PEG) copolymers cross-linked with pentaerythritol, a four-way cross-linker, are prepared to compare their mechanical and shape memory properties with the one cross-linked by glycerol. Composition of PEG and pentaerythritol is varied to search for the one with the best mechanical and shape memory properties. The highest shape recovery rate is observed for the copolymer composed of 30 mol% PEG-200 and 2.5 mol% pentaerythritol. Four-way cross-linking by pentaerythritol significantly improves shape recovery rate and retention of high shape recovery rate after repeated use compared to the one cross-linked by glycerol, a three-way cross-linker, and difference and advantage of additional cross-linking point are discussed.

引用

页码：328 / 332

页数：5

共 10 条

[1] Modeling and control of smart structures with bonded piezoelectric sensors and actuators [J].