Preparation of Hydrophilic Polymer Thin Films on Polytetrafluoroethylene by Plasma?Solution Interface Reaction

概要

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This study aimed to develop a new method for bonding a hydrophilic plasma polymer film to a polytetrafluoroethylene (PTFE) surface through a plasma?solution interface reaction. A PTFE sheet of 0.2 mm in thickness was used. A dibasic acid ester with a low melting point, high boiling point, low vapor pressure, and low viscosity was used, and it had high solubility in various reactants and low reactivity to low-temperature plasma. Furthermore, trans-stilbene and its derivatives were used as reactants. A 13.56 MHz radio wave was applied by inductive coupling and the low-temperature plasma generated was used for the plasma?solution interface reaction. When Ar+H2O or O2+H2O was used as the plasma process gas and a derivative bearing a hydrophilic group was used as the reactant, a hydrophilic polymer thin film with a contact angle less than 40° was obtained. Attenuated total reflectance/Fourier transform infrared spectroscopy revealed broad absorption caused by the OH group in the 3500 cm-1 region, and absorption due to the stretching vibration of C-H coupling was observed at 2800-3000 cm-1.
The Society of Photopolymer Science and Technology (SPST)の論文