文献类型：期刊文献

英文题名：Self-healing, recyclable, and removable UV-curable coatings derived from tung oil and malic acid

作者：Zhang, Jinshuai[1,2,3,4,5] Huang, Jia[1,2,3,4,5] Zhu, Guoqiang[1,2,3,4,5] Yu, Xixi[1,2,3,4,5,6] Cheng, Jianwen[1,2,3,4,5,6] Liu, Zengshe[7] Hu, Yun[1,2,3,4,5] Shang, Qianqian[1,2,3,4,5] Liu, Chengguo[1,2,3,4,5] Hu, Lihong[1,2,3,4,5] Zhou, Yonghong[1,2,3,4,5]

通信作者：Hu, LH[1];Hu, LH[2];Hu, LH[3];Hu, LH[4];Hu, LH[5]

机构：[1]Chinese Acad Forestry, Key Lab Biomass Energy & Mat, Nanjing 210042, Peoples R China;[2]Chinese Acad Forestry, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210042, Peoples R China;[3]Chinese Acad Forestry, Natl Forestry & Grassland Adm, Key Lab Chem Engn Forest Prod, Nanjing 210042, Peoples R China;[4]Chinese Acad Forestry, Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Peoples R China;[5]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China;[6]Nanjing Forestry Univ, Coll Sci, Nanjing 210037, Peoples R China;[7]USDA, ARS, Natl Ctr Agr Utilizat Res, Biooils Res Unit, 1815 N Univ St, Peoria, IL 61604 USA

年份：2021

卷号：23

期号：16

起止页码：5875-5886

外文期刊名：GREEN CHEMISTRY

收录：;EI(收录号：20213410802704);Scopus(收录号：2-s2.0-85113189207);WOS:【SCI-EXPANDED(收录号:WOS:000677455500001)】；

基金：This research was funded by the National Natural Science Foundation of China (31822009 and 31770615) and the Fundamental Research Funds of CAF (CAFYBB2020QA005).

语种：英文

外文关键词：Curing - Drying oils - Efficiency - Microwave devices - Oligomers - Self-healing materials - Tensile strength

摘要：This study reports the development of super "green" smart coatings by integrating renewable resources, microwave-assisted synthesis, and dynamic covalent chemistry into UV-curable coatings. First, a novel UV-curable oligomer (TMG) was synthesized from renewable tung oil (TO) via microwave technology, and a biobased reactive diluent (MM) was derived from malic acid under ambient conditions. Afterward, a set of UV-curable coatings containing plentiful hydroxyl and ester groups were prepared by photo-polymerizing the TMG oligomer with the MM diluent. The resulting coatings demonstrated a high biobased content (49.2%-58.1%), good mechanical and thermal properties (e.g. T-g of 70.6-78.6 degrees C), and excellent coating adhesion and flexibility. Furthermore, by activating dynamic transesterification reactions at elevated temperatures with a zinc catalyst, the resulting UV-curable materials exhibited excellent repairability, removability, recyclability, malleability, and shape memory properties. For instance, the TMG material containing 10% of MM demonstrated a crack repair efficiency of 92.5%, a welding efficiency of tensile strength up to 171.8%, a recycling efficiency of tensile strength up to 404.3%, and a shape fixity ratio of 98.2%.