Preparation of hyperbranched copolymers of maleimide inimer and styrene by ATRP |
| |
Authors: | Ren Qiang Zhang Dongliang Fang Jianbo Guo Fudi |
| |
Affiliation: | Department of Materials Science and Engineering, Jiangsu Polytechnic University, Changzhou 213016, People's Republic of China |
| |
Abstract: | Novel hyperbranched copolymers were prepared by the atom transfer radical copolymerization of N-(4-α-bromobutyryloxy phenyl) maleimide (BBPMI) with styrene in 1-methyl-2-pyrrolidone (NMP) using the complex of CuBr/2,2′-bipyridine as catalyst. The copolymerization behavior was investigated by comparison of the conversion of double bond of BBPMI determined by 1H NMR with that of styrene. The hyperbranched structure of resulting copolymers was verified by gel permeation chromatography (GPC) coupled with multi-angle laser light scattering (MALLS). The influences of dosage of catalyst and monomer ratio on the polymerization rate and structure of the resulting polymers were also investigated. The glass transition temperature of the resulting hyperbranched copolymer increases with increasing mole fraction of BBPMI, fBBPMI. The resulting copolymers exhibit improved solubility in organic solvents; however, they show lower thermal stabilities than their linear analogues. |
| |
Keywords: | Atom transfer radical polymerization Self-condensing vinyl polymerization Hyperbranched polymer |
本文献已被 ScienceDirect 等数据库收录! |