The nature of bonding matters: Benzoxazine based shape memory polymers

被引：47

作者：

Schaefer, Hannes ^{[1
,2
]}

Hartwig, Andreas ^{[1
,2
]}

Koschek, Katharina ^{[1
]}

机构：

[1] Fraunhofer Inst Mfg Technol & Adv Mat IFAM, Wiener Str 12, D-28359 Bremen, Germany

[2] Univ Bremen, Chem Dept, Leobener Str, D-28359 Bremen, Germany

来源：

POLYMER | 2018年 / 135卷

关键词：

Shape memory polymers; Benzoxazines; Ring opening polymerization; PCL; Thermosets; Thermo-responsive polymers; RING-OPENING POLYMERIZATION; HIGH-STRENGTH; NETWORKS; POLYBENZOXAZINE; TEMPERATURE; BLENDS; 1,3-BENZOXAZINE; MONOMERS; POLY(EPSILON-CAPROLACTONE); POLYURETHANES;

D O I：

10.1016/j.polymer.2017.12.029

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 novel shape memory polymer is presented based on polybenzoxazine and poly(epsilon-caprolactone) (PCL). Polybenzoxazines with unbound and covalently incorporated PCL were prepared applying hydroxyl and tosyl terminated PCLs, respectively. Thermo-responsive and shape memory behavior with high shape fixity and recovery were demonstrated for samples containing a high ratio of covalently bonded PCL in a crosslinked benzoxazine structure. Samples with exclusively non-bonded PCL chains proved to be brittle, possessing a heterogeneous morphology and lacking shape memory properties. The type of bonding into benzoxazines network - covalent versus non-covalent bonding of PCL - strongly affects materials structure property relationship. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：285 / 294

页数：10

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