Experimental Design for Teaching Polymer Science for Sustainable Development: Preparation and Characterization of Repairable Thermoset Materials Containing Schiff Base Type Dynamic Covalent Bonds
SUN Lu-lu, WAN Yu-zhuo, GAO Ming-xing, XIAO Ming-yue, LI Xiang-yuan, FENG An-chao, ZHANG Li-qun. Experimental Design for Teaching Polymer Science for Sustainable Development: Preparation and Characterization of Repairable Thermoset Materials Containing Schiff Base Type Dynamic Covalent Bonds[J]. Polymer Bulletin, 2023,36(4):521-528.
SUN Lu-lu, WAN Yu-zhuo, GAO Ming-xing, XIAO Ming-yue, LI Xiang-yuan, FENG An-chao, ZHANG Li-qun. Experimental Design for Teaching Polymer Science for Sustainable Development: Preparation and Characterization of Repairable Thermoset Materials Containing Schiff Base Type Dynamic Covalent Bonds[J]. Polymer Bulletin, 2023,36(4):521-528. DOI: 10.14028/j.cnki.1003-3726.2023.04.011.
The design and development of self-healing and reusable thermosetting materials became one of the hot topics in polymer materials study in recent years. In this paper
terephthalaldehyde
dipolyetheramine and ternary polyetheramine were employed as the raw materials to prepare such kind of thermosetting materials with Schiff base-type cross-linked network structure. The materials showed great self-healing and remodeling behavior due to the rapid and reversible imine network rearrangement reaction occurs at the temperature of 80~100 ℃ among the large amount of imine bonds (—C=N—). Owing to the advantages of mild reaction conditions and convenient operations
the procedure is suitable to be promoted as a teaching experiment for material majors and a popular science experiment for high school students.