Studies on surface grafting of a benzophenone photoactive polymer and attachment of macromolecules by a photochemical method

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Journal of Beijing University of Chemical Technology ›› 2011, Vol. 38 ›› Issue (5) : 75-80.

KANG Hui;LIU LianYing;YANG WanTai

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Benzophenone (BP) units have been incorporated onto the surface of a polypropylene (PP) film by a two-step photografting polymerization of photoactive monomers containing BP moieties, 4-benzophenone methacrylate (BPMA) and 4,4'-dimethacrylate benzophenone (DMABP). Semipinacol groups were coupled on the surface in the first step, and then cleaved by heating in the second step to generate macro-radicals on the surface to begin the grafting polymerization. The effects of varying the radiation time and content of BP used in the first step were examined. The effects of varying the reaction temperature and composition of the mixed monomers in the second step were also investigated. UV-visible spectroscopy, XPS and contact angle measurements were employed to follow the grafting process and modification of the surface. Furthermore, hydrophobic polystyrene, and hydrophilic polyethylene glycol (PEG) and bovine serum albumin (BSA) were attached onto the surface by photochemical reaction with the BP units, resulting in an increase in the hydrophobic or hydrophilic character of the surface, respectively.

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KANG Hui;LIU LianYing;YANG WanTai. Studies on surface grafting of a benzophenone photoactive polymer and attachment of macromolecules by a photochemical method[J]. Journal of Beijing University of Chemical Technology, 2011, 38(5): 75-80

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Received	Revised	Published
2011-04-18	1900-01-01	2011-09-20
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2011-09-20

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