Fast switchable, epoxy based shape-memory polymers with high strength and toughness

被引：53

作者：

Arnebold, Andre ^{[1
]}

Hartwig, Andreas ^{[1
]}

机构：

[1] Fraunhofer Inst Fertigungstech & Angew Mat Forsch, Wiener Str 12, D-28359 Bremen, Germany

来源：

POLYMER | 2016年 / 83卷

关键词：

Shape-memory polymer; Epoxy resin; Crystallinity; CATIONIC-POLYMERIZATION; NETWORKS; MORPHOLOGY; POLY(OMEGA-PENTADECALACTONE); POLYURETHANES; TEMPERATURE; COMPOSITES; ADJUSTMENT; COPOLYMER; SEGMENTS;

D O I：

10.1016/j.polymer.2015.12.007

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A fast switchable, epoxy based shape-memory polymer is presented. For this, a partially crystalline epoxy resin was formed by cationic polymerization in the presence of a high meltable polyester polyol, namely poly(omega-pentadecalactone) (PPDL). Under certain polymerization conditions, this system generates a high degree of crystallinity compared to the respective poly(epsilon-caprolactone) (PCL) counterpart. Thus, such an epoxy/PPDL composite exhibits very fast shape-fixity and a good shape-memory cycle stability. Furthermore, the formation of a heterogeneous morphology by segregation and crystallization leads to enhanced strength and toughness compared to the respective epoxy/PCL composites. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：40 / 49

页数：10

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