文献类型：期刊文献

英文题名：Development of Catalyst-Free Self-Healing Biobased UV-Curable Coatings via Maleate Monoester Transesterification

作者：Yu, Xixi[1,2,3] Hu, Yun[2,3] Lei, Wen[1] Liu, Chengguo[2,3] Zhou, Yonghong[2,3]

第一作者：Yu, Xixi

通信作者：Lei, W[1];Liu, CG[2];Liu, CG[3]

机构：[1]Nanjing Forestry Univ, Coll Sci, Nanjing 210037, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Natl Engn Res Ctr Low Carbon & Efficient Utilizat, Key Lab Biomass Energy & Mat Jiangsu Prov, Nanjing 210042, Peoples R China;[3]Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Nanjing 210042, Peoples R China

年份：2023

卷号：13

期号：1

外文期刊名：COATINGS

收录：;Scopus(收录号：2-s2.0-85146821893);WOS:【SCI-EXPANDED(收录号:WOS:000914745000001)】；

基金：This work was supported by the Fundamental Research Funds of CAF (CAFYBB2020QA005) and the National Natural Science Foundation of China (31700522).

语种：英文

外文关键词：UV-curable coatings; self-healing; tung oil; catalyst-free; microwave technology

摘要：Developing environmentally friendly UV-curable polymers with multi-functionality is very significant for sustainable development and environmental protection. In this work, a novel tung-oil-based UV-curable oligomer (TOMAH) was synthesized by Diels-Alder and ring-opening reactions via microwave technology. Subsequently, catalyst-free self-healing UV-curable materials based on a maleate monoester transesterification (MMETER) were developed by co-photopolymerization of TOMAH and hydroxyethyl methacrylate (HEMA). The obtained UV-cured materials possessed a high glass transition temperature (T-g > 81 degrees C), excellent adhesion (grade 1), and flexibility (2 mm). Particularly, the outstanding photopolymerization activity of the UV-curable resins was proved by UV-curing kinetics. In addition, dynamic transesterifications occurred without an external catalyst at a moderate temperature, resulting in good self-healing properties (with a scratch-repair efficiency of 78.6-93.3%) and shape-memory properties for the obtained UV-cured materials. This work combines the multiple advantages of biomass raw material, microwave synthesis technology, UV-curing method, and multifunctional polymers, thus providing an innovative strategy to fabricate sustainable and intelligent coatings.