Synthesis of Graft Copolymer by Coupling Reaction of Living Polymethyl Methacrylate with Bromomethylated Polystyrene

Abstract

Abstract: A novel well defined graft copolymer(PS-g-PMMA) with control over the length of both backbone and side chain was synthesized by coupling reaction of living polymethyl methacrylate with bromomethylated polystyrene. The backbond polymer was prepared by anionic polymerization of styrene with n-butyllithium followed by bromomethylation using C₈H₁₇OCH₂Br/SnCl₄. The living PMMA was prepared by group transfer polymerization of MMA. The graft copolymers with narrow molecular weight distribution, D=1.2～1.4, at the M_n of around 3×10⁴～7×10⁴were obtained. The reactivity of the BMPS and living PMMA decrease with increasing of their molecular weight, favorable reaction temperature was-20 ℃. Characterization of the product include ¹HNMR, ¹³CNMR, GPCand DSC, comparing with the homopolymer PSand PMMA, the copolymer has a lower glass temperature.

Key words: Anionic polymerization, Group transfer polymerization, Living polymer, Coupling reaction, Graft copolymer

CLC Number:

O632

TrendMD:

ZOU You-Si, GUO Jin-Quan, DAI Li-Zong, ZHANG Jing-Hui, PAN Rong-Hua . Synthesis of Graft Copolymer by Coupling Reaction of Living Polymethyl Methacrylate with Bromomethylated Polystyrene[J]. Chem. J. Chinese Universities, 1998, 19(7): 1162.

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Synthesis of Graft Copolymer by Coupling Reaction of Living Polymethyl Methacrylate with Bromomethylated Polystyrene

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