| 초록 |
Photopolymerization is one of the widely using method for producing materials. This method has various advantages including very high reaction rates at room temperature, low energy need and easy reaction control. In this study, biocompatible surfaces were prepared by the surface photograft polymerization method. This method is based on the photochemistry of the benzyl N,N-Diethyldithiocarbamate(DC) group. Chloromethyl groups were introduced onto the Si wafer using silane compound as coupling agent and then DC groups were introduced and sequentially PEGMA monomers were grafted onto the surface. The modified surfaces were characterized by means of fourier transform infrared(FTIR) spectroscopy, X-ray photoelectron spectroscopy(XPS), atomic force microscopy(AFM) and contact angle measurement. It was confirmed that PEGMA was introduced successfully onto the Si-wafer surface. It is expected that the modified surface with PEGMA improve the biocompatibility and the reactive hydroxyl end groups of the PEGMA offer further possibilities of improving its biocompatibility by immobilizing bioactive molecules.
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