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Abstract

In this paper, the kinetics of poly(ethylene glycol) monomethacrylate (PEGMA) grafted from Si(100) surface to generate poly(poly(ethylene glycol) monomethacrylate) [P(PEGMA)] polymer brush was investigated. A covalently bonded (Si-C bonded) 4-vinyl benzyl chloride (VBC) monolayer (Si-VBC surface) was formed via UV induced coupling of the vinyl group of VBC with the Si-H surface. Then, PEGMA was grafted from Si(100) surface via surface initiated atom transfer radical polymerisation with the aid of the monolayer VBC. The modified silicon surfaces were characterised by X-ray photoelectron spectroscopy, ellipsometry and telescopic goniometre. The presence of grafted P(PEGMA) on the Si-VBC surface was confirmed by X-ray photoelectron spectroscopy and ellipsometry measurements. The results suggested that the chain growth from Si-VBC surface is consistent with a ‘controlled' or ‘living' process.

Keywords

SILICON SURFACE ATRP P(PEGMA)BRUSH

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Kinetics of PEGMA grafted from Si(100) surface to form polymer brush

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