A biobased self-healing thermoset coating with a dynamic photosensitive molecule

被引：11

作者：

de Merxem, Ludovic Geelhand ^{[1
]}

Vuluga, Daniela ^{[1
]}

Lecamp, Laurence ^{[1
]}

机构：

[1] Normandie Univ, INSA Rouen, UNIROUEN, CNRS,PBS, F-76000 Rouen, France

来源：

POLYMER | 2021年 / 217卷

关键词：

Thermoset; Photo-healing; Disulfide; Sustainable resource; Vegetable oil;

D O I：

10.1016/j.polymer.2021.123454

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 biobased photo-healable thermoset coating has been developed from 4 components in only 2 steps via a solvent-free process involving an epoxy/amine reaction. Its composition includes epoxidized linseed oil and a dynamic molecule (4,4'-diaminodiphenyl disulfide) which, under UV irradiation, can be photolyzed reversibly. Compared to an analogous material without disulfide bond, this coating exhibits a lower crosslinking density and a higher elongation at break. Importantly, a 100 mu m depth scratch has been significantly repaired under UV light: a photo-healable coating having both thermoplastic and thermosetting properties has thus been elaborated.

引用

页数：9

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