초록 |
In this study, we adjusted electron density of furan moieties of furan-functionalized copolymers to investigate difference of self-healing properties according to reactivity of Diels-Alder reaction. A series of copolymers were synthesized by free radical copolymerization using furan-functionalized methacrylates(furoyl ethyl ether methacrylate(FEEMA) as an electron deficient group and furfuryl 2-(methacryloyl)ethyl carbamate(FMAECM) as an electron rich group) and poly(ethylene glycol) methyl ether methacrylate(PEGMA) as monomers and 2,2’-azobis(2-methylpropionitrile)(AIBN) as an initiator. Also 1,1’-(methylenedi-4,1-phenylene)bismaleimide(BM) was used as a cross-linker for thermally reversible Diels-Alder reaction. Detailed results of polymer properties and healing performance were characterized by various measurements. |