질소와 암모니아 존재하에서 1 keV 에너지의 알곤과 수소 이온 조사에 의한 PTFE(polytetrafluoroethylene)의 표면형상 변화연구

유대환; 김기환; 강동엽; 김중수; 고석근; 김현주

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자료유형: 학술저널

저자정보: 유대환 (R&D center, ㈜피앤아이) 김기환 (R&D center, ㈜피앤아이) 강동엽 (R&D center, ㈜피앤아이) 김중수 (R&D center, ㈜피앤아이) 고석근 (R&D center, ㈜피앤아이) 김현주 (충주대학교 교양과정부)

저널정보: 한국재료학회 한국재료학회지 한국재료학회지 제16권 제6호

발행연도: 2006.1

수록면: 367 - 372 (6page)

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Polytetrafluoroethylene (PTFE) surface was modified for improving hydrophilicity by ion irradiation in environmental gas of $N_2$ and $NH_3$, respectively. The water contact angle onto the PTFE surface increased from $104{\circ}$ to over $140{\circ}$ by Ar ion irradiation in $N_2$ gas. In the case of $NH_3$ as environmental gas, there were a slight increase of contact angle from ion dose of $1{\times}10^{15}\;to\;5{\times}10^{15}\;ions/cm^2$, and its dramatic decrease to the value of 35o at the conditions of ion dose higher than $1{\times}10^{16}\;ions/cm^2$. It was found from SEM results that the surface morphology of PTFE was changed into one with filament structure after Ar ion irradiation in $N_2$ gas environments. On the contrary, Ar ion irradiation in $NH_3$ gas condition induced the PTFE surface with network structure. Hydrogen ion irradiation resulted in a little change of PTFE surface morphology, comparing with the case of Ar ion irradiation. The water contact angle of hydrogen ion irradiated PTFE surface in reactive gas decreased with increment of ion dose. Hydrogen ion irradiation could improve hydrophilicity with little change of surface morphology. It might be considered from FT-IR results that the improvement in wettability of PTFE surface by ion irradiation in $N_2$ and $NH_3$ gases could be due to the hydrophilic groups of NHx bonds.

#PTFE #Ion beam modification #hydrophilicity #$NH_3$

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