| Info. | Vol.1 - No.2 (2007.06.20) |
|---|---|
| Title | Investigation on Coating Methods of a Self-Assembled Monolayer on PDMS (Poly (dimethylsiloxane)) Surface |
| Authors | Byongson Park1 & Simon Song1 |
| Institutions | 1Department of Mechanical Engineering, Hanyang University 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea Correspondence and requests for materials should be addressed to S. Song (simonsong@hanyang.ac.kr) |
| Abstract | This paper examines PDMS surface treatment methods that can be applied to immobilize a hydrophilic polymer membrane in a PDMS microchannel by covalent bonding. After creating -OH groups on a PDMS surface by UV/ozone treatment, we form SAM on the surface using 3-(trimethoxysilyl)propyl methacrylate (TMSPMA) or 3-(trichlorosilyl)propyl methacrylate (TPM) reagent. Contact angles between a water droplet and SAM-coated PDMS surfaces decreased due to -OH groups generated on the surfaces. The surface functionalized with TMSPMA resulted in the smallest contact angle of 46째. Raman spectroscopy showed that the intensities of Raman shifts were strongest for the surface functionalized with TMSPMA. Overall, functionalizing a PDMS surface with TMAPMA resulted best among the methods examined in this study. |
| Keyword | SAM, PDMS, Functionalization, Contact angle |
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