Synthesis of Elastin Graft Copolymer via ATRP and Its Properties

Chem. J. Chinese Universities

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Synthesis of Elastin Graft Copolymer via ATRP and Its Properties

WANG Xiao-Li¹, GAN Tian-Tian¹, ZHANG Min²*, HOU Xin¹, YAO Kang-De¹

1. School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;
2. Department of Chemistry, Nankai University, Tianjin 300071, China

Received:2006-08-24 Revised:1900-01-01 Online:2007-04-10 Published:2007-04-10
Contact: ZHANG Min

Abstract

Abstract: Elastin was modified with 2-bromoisobutyryl bromide to prepare macro-initiator and subsequently poly(2-hydroxyethyl methacrylate) was synthesized by atom transfer radical polymerization(ATRP) method initiated by the macro-initiator. The graft copolymers were examined by using FTIR, XPS, TGA, SEM, ion chromatography and dynamic contact angle test. The results show that PHEMA has been covalently bound to the elastin. Although SEM suggested the surface of ATRP-modified elastin was much smoother than that of the unmodified samples, the thermal stability of modified samples was slightly lower than that of unmodified samples, and the initial temperature of thermal decomposition changed from 307 ℃ to 265 ℃. The dynamic contact angle test shows that the modified elastin was hydrophilic and after polymerization for 72 h, the advancing angle of elastin decreased from 130.45° to 29.80° and contact angle hysteresis reduced from 70.42° to 29.80°.

Key words: Atom transfer radical polymerization(ATRP), Elastin, 2-Hydroxyethyl methacrylate(HEMA), Graft

CLC Number:

O636.9

TrendMD:

WANG Xiao-Li¹, GAN Tian-Tian¹, ZHANG Min²*, HOU Xin¹, YAO Kang-De¹. Synthesis of Elastin Graft Copolymer via ATRP and Its Properties [J]. Chem. J. Chinese Universities, doi: .

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Synthesis of Elastin Graft Copolymer via ATRP and Its Properties

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