Surface modification of poly(styrene-b-(ethylene-co-butylene)-b-styrene) elastomer via photo-initiated graft polymerization of poly(ethylene glycol)

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• 作者：Xiaomeng Li^a ; Shifang Luan^a ; ^{sfluan@ciac.jl.cn} ; Huawei Yang^a ; Hengchong Shi^a ; Jie Zhao^a ; Jing Jin^a ; Jinghua Yin^a ; ^{yinjh@ciac.jl.cn} ; Paola Stagnaro^b
• 关键词：Poly(styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS) copolymer ; Photo-initiated graft polymerization ; Poly(ethylene glycol) methyl ether methacrylate (PEGMA) ; Wettability ; Hemocompatibility
• 刊名：Applied Surface Science
• 出版年：2012
• 出版时间：15 January 2012
• 年：2012
• 卷：258
• 期：7
• 页码：2344-2349
• 全文大小：915 K

文摘

Poly(styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS) copolymer biomedical elastomer was covalently grafted with poly(ethylene glycol) methyl ether methacrylate (PEGMA) via a photo-initiated graft polymerization technique. The surface graft polymerization of SEBS with PEGMA was verified by ATR-FTIR and XPS. Effect of graft polymerization parameters, i.e., monomer concentration, UV irradiation time and initiator concentration on the grafting density was investigated. Comparing with the virgin SEBS film, the PEGMA-modified SEBS film presented an enhanced wettability and a larger surface energy. Besides, the surface grafting of PEGMA imparted excellent anti-platelet adhesion and anti-protein adsorption to the SEBS surface.