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Surface Characterization of the d-PMMA Thin Films Treated by Oxygen Plasma  

Kim, Soong-Hoon (Neutron Science Division, Korea Atomic Energy Research Institute)
Choi, Dong-Jin (Neutron Science Division, Korea Atomic Energy Research Institute)
Lee, Jeong-Su (Neutron Science Division, Korea Atomic Energy Research Institute)
Choi, Ho-Suk (Department of Chemical Engineering, Chungnam National University)
Publication Information
Polymer(Korea) / v.33, no.3, 2009 , pp. 263-267 More about this Journal
Abstract
In order to improve the hydrophilic property on the surface of d-PMMA(deuterated poly-(methyl methacrylate)) film, it was exposed to oxygen plasma, All experimental conditions were same except to plasma exposure time that was varied from 0 to 180 s, The effects according to the exposure time were identified using contact angles, X-ray reflectometer(XRR), neutron reflectometer(NR), and X-ray photoelectron spectroscopy(XPS). By confirming that as the exposure time increases, water contact angle decreases while the composition of oxygen increases, it was confirmed that the composition of oxygen has a huge influence on improving the hydrophilic property. The physical characters as a function of the exposure time were investigated by the XRR. By analyzing complementally the results of the XRR, NR, and XPS, more detailed chemical bonding conditions were studied by obtaining not only composition of the carbon and oxygen but that of the hydrogen.
Keywords
plasma treatment; reflectivity; surface modification; PMMA; XPS;
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