| 초록 |
A polymer patterning technology based on photo-graft polymerization by photoiniferter chemistry has been used as a simple microlithographic technique. Since this method proceeds only during irradiation and in irradiated region, it is simply controlled by irradiation time, light intensity, and monomer concentration. In this study, a regionally well-micropatterned surface was prepared by the photo-graft polymerization by iniferter, the benzyl N,N-Diethyldithiocarbamate group. The synthesized photoreactive copolymer, poly(styrene-co-vinylbenzyl N,N-Diethyldithiocarbamate) was coated on the PP film. Sequentially, photo-graft polymerization by UV irradiation was carried out with various vinyl monomers such as PEGMA and NIPAAm for the micropatterned surface using photomask. The photo-grafted surfaces were characterized by FT-IR, XPS, AFM and contact angle measurement. It is expected that the patterened PEGMA, NIPAAm and their copolymer surfaces can be applied as a polymeric substrate for the control of cellular responses. Furthermore, the micropatterned surfaces immobilized with bioactive molecules will be applicable to the regulation of variable cell functions including cell adhesion, growth and differentiation. |
