Moisture-mediated intrinsic self-healing of modified polyurethane urea polymers

被引：22

作者：

Wittmer, Anastassija ^{[1
,2
]}

Brinkmann, Andreas ^{[1
]}

Stenzel, Volkmar ^{[1
]}

Hartwig, Andreas ^{[1
,2
]}

Koschek, Katharina ^{[1
]}

机构：

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

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

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2018年 / 56卷 / 05期

关键词：

hydrogen bonds; intrinsic healing; materials chemistry; moisture; polymers; polyurethane-urea; stimuli-sensitive polymers; supramolecular chemistry; INFRARED TEMPERATURE; WATER; HYDROGELS; COPOLYMERS; EPOXY; POLYMERIZATION; COMPOSITES; ELASTOMER; URETHANE; COATINGS;

D O I：

10.1002/pola.28925

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Functional materials having the ability to self-heal cracks or scratches after damage are of great interest for a huge scope of applications. Herein, we report a self-healing polyurethane urea-based material with implemented 1-(2-aminoethyl) imidazolidone (UDETA) as a chain terminating molecule and for hydrogen bond network formation. Both, UDETA content and moisture affected the self-healing process. The reversible change in the materials properties was proven by detailed analyses of hardness and thermomechanical behavior in dependence of the water uptake of the samples. FT-IR analysis revealed that water is able to act as a plasticizer interrupting hydrogen bonding interactions within the polymer network and thus, influencing glass transition temperature and hardness of the samples. (c) 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018, 56, 537-548.

引用

页码：537 / 548

页数：12

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