Strong,Removable,and Photoluminescent Hyperbranched Polyamide-amine Hot Melt Adhesive

• 作者: Si-Jia Zhang Xing-Xing Chen Chen-Hui Cui Li Ma Qian-Yun Zhong Kai-Xiang Shen Jing Yu Zhen Li You-Shen Wu Qiang Zhang Yi-Long Cheng Ling He Yan-Feng Zhang
• 来源期刊: 高分子科学（英文版）
• 年，卷（期）: 2021,（10）
• 所属期刊栏目: ARTICLES
• 页码范围: 1319-1327
• 页数: 9页
• 语种: 英文

摘要

The development of adhesive technology is gaining increasing attention in machinery,electronics,aviation,and other fields.However,traditional adhesives are difficult to be peeled and removed after cross-linking and curing due to the limited solubility in common solvents,which causes pollution and damage to the surface of the adherend.In this work,we synthesized random hyperbranched polyamide-amine hot melt adhesives through Michael addition of 1,8-octanediamine and N,N'-methylene diacrylamide (ODA-RHP HMA).Owing to the presence of various polar groups,ODA-RHP HMA exhibited robust lap shear strength to different substrates,including glass (6.6 MPa),ceramics (10.3 MPa),steel(11.5 MPa),and aluminum (11.8 MPa).Due to the hydrogen bonds in ODA-RHP,the HMA demonstrated intrinsic self-healing ability,which can be used repeatedly when being subjected to cyclic heating and cooling.Since ODA-RHP HMA can be swollen or dissolved in ethanol,the adhesives can be easily removed through erasing.In addition,ODA-RHP exhibited aggregation-induced luminescence due to the tertiary amine structure in the molecular structure of ODA-RHP,which can be used in the field of cultural relics restoration.