A fully bio-based epoxy vitrimer: Self-healing, triple-shape memory and reprocessing triggered by dynamic covalent bond exchange

Xinxin Yang; Lizhen Guo; Xu Xu; Shibin Shang; He Liu

Materials & Design (Jan 2020)

A fully bio-based epoxy vitrimer: Self-healing, triple-shape memory and reprocessing triggered by dynamic covalent bond exchange

Xinxin Yang,
Lizhen Guo,
Xu Xu,
Shibin Shang,
He Liu

Affiliations

Xinxin Yang: Institute of Chemical Industry of Forestry Products, Chinese Academy of Forestry, Key Laboratory of Biomass Energy and Material, Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, National Engineering Laboratory for Biomass Chemical Utilization, Nanjing 210042, Jiangsu Province, China; College of Chemical Engineering, Nanjing Forestry University, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, Nanjing 210037, Jiangsu Province, China
Lizhen Guo: College of Chemical Engineering, Nanjing Forestry University, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, Nanjing 210037, Jiangsu Province, China
Xu Xu: College of Chemical Engineering, Nanjing Forestry University, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, Nanjing 210037, Jiangsu Province, China; Corresponding authors.
Shibin Shang: Institute of Chemical Industry of Forestry Products, Chinese Academy of Forestry, Key Laboratory of Biomass Energy and Material, Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, National Engineering Laboratory for Biomass Chemical Utilization, Nanjing 210042, Jiangsu Province, China
He Liu: Institute of Chemical Industry of Forestry Products, Chinese Academy of Forestry, Key Laboratory of Biomass Energy and Material, Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, National Engineering Laboratory for Biomass Chemical Utilization, Nanjing 210042, Jiangsu Province, China; Corresponding authors.

Journal volume & issue: Vol. 186

Abstract

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Vitrimers are a new type of polymers with promising applications in innovative materials. Epoxidized soybean oil (ESO) is an ideal candidate for vitrimer preparation owing to its abundant epoxy groups. However, preparing plant oil-based vitrimers with high glass transition temperatures (Tg) and strength remains challenging. A novel and fully bio-based vitrimer with a Tg above room temperature was synthesized from ESO and a rosin derivative-fumaropimaric acid (FPA) and exhibited excellent self-healing, shape memory, and reprocessing due to the presence of dynamic covalent bond exchange. The fully bio-based ESO-FPA vitrimer exhibited a Tg of 65 °C and a tensile strength of 16 MPa, which resulted from the rigid structure and tricarboxylic groups of FPA. The effect of transesterification reactions on the network structure was confirmed through stress relaxation. Our work expands the applications of commercial ESO in vitrimer materials and provides a novel approach to prepare bio-based vitrimers with desirable properties. Keywords: Bio-based, Dynamic covalent bond, Glass transition temperature, Renewable resources, Stress relaxation

Published in Materials & Design

ISSN: 0264-1275 (Print); 1873-4197 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/materials-and-design

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