文献类型：期刊文献

英文题名：Ethyl cellulose based self-healing adhesives synthesized via RAFT and aromatic schiff-base chemistry

作者：Gong, Xuanang[1,2] Cheng, Zenghui[1,3] Gao, Shishuai[1,3] Zhang, Daihui[1,3] Ma, Yufeng[2,3] Wang, Jifu[1,3] Wang, Chunpeng[1,3] Chu, Fuxiang[1,3]

第一作者：Gong, Xuanang

通信作者：Zhang, DH[1];Ma, YF[2];Zhang, DH[3];Ma, YF[3]

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

年份：2020

卷号：250

外文期刊名：CARBOHYDRATE POLYMERS

收录：;EI(收录号：20203409068263);Scopus(收录号：2-s2.0-85089508369);WOS:【SCI-EXPANDED(收录号:WOS:000578996400001)】；

基金：We acknowledge the support from National Natural Science Foundation of China (31890774), National Key R&D Program of China (2017YFE0106800) and Jiangsu Key Laboratory for Biomass Energy and Materials (JSBEM-S-201901).

语种：英文

外文关键词：Adhesives; Ethyl cellulose; Schiff base; Self-Healing; Vanillin

摘要：In this work, reversible addition-fragmentation chain transfer (RAFT) polymerization and Schiff base chemistry was combined to fabricate self-healing adhesives. An esterification reaction was first performed to prepare ethyl cellulose based macroinitiators. Then, a "grafting from" RAFT of vanillin methacrylate and lauryl methacrylate was used to obtain graft copolymers. DSC result showed that the glass transition temperature was manipulated via changing the ratio of vanillin and fatty acids moieties. NMR spectrum analysis demonstrated the presence of aldehyde groups, which were available for the dynamic crosslinking to generate a network as self-healing adhesives. The adhesive test showed that the shear strength could reach 0.81 MPa with a self-healing efficiency of 98.7 %. The bottlebrush structures of copolymers and reversibility of Schiff base chemistry might collaboratively contribute to the high self-healing efficiency. This study provides a facile way to fabricate high-performance self-healing adhesives from ethyl cellulose and renewable resources.