Jia Han, Jimbo Keiya, Yokochi Hirogi, Otsuka Hideyuki, Michinobu Tsuyoshi
Department of Materials Science and Engineering, Tokyo Institute of Technology, Meguroku, Tokyo, Japan.
Department of Chemical Science and Engineering, Tokyo Institute of Technology, Meguroku, Tokyo, Japan.
Sci Technol Adv Mater. 2024 Feb 19;25(1):2320082. doi: 10.1080/14686996.2024.2320082. eCollection 2024.
The creation of self-healing polymers with superior strength and stretchability from biodegradable materials is attracting increasing attention. In this study, we synthesized new biomass-derived cellulose acetate (CA) derivatives by ring-opening graft polymerization of δ-valerolactone followed by the introduction of ureidopyrimidinone (Upy) groups in the polymer side chains. Due to the semicrystalline aliphatic characteristics of the side chain poly(δ-valerolactone) (PVL) and quadruple hydrogen bonds formed by the Upy groups, the stretchability of the resulting polymers was significantly enhanced. Moreover, the shape memory ability and self-healing property (58.3% of self-healing efficiency) were successfully imparted to the polymer. This study demonstrates the great significance of using biomass sources to create self-healing polymers.
利用可生物降解材料制备具有优异强度和拉伸性的自愈聚合物正受到越来越多的关注。在本研究中，我们通过δ-戊内酯的开环接枝聚合反应合成了新型生物质衍生的醋酸纤维素（CA）衍生物，随后在聚合物侧链中引入脲嘧啶酮（Upy）基团。由于侧链聚（δ-戊内酯）（PVL）的半结晶脂肪族特性以及Upy基团形成的四重氢键，所得聚合物的拉伸性显著提高。此外，该聚合物成功赋予了形状记忆能力和自愈性能（自愈效率为58.3%）。本研究证明了利用生物质来源制备自愈聚合物的重大意义。
