박종용 정연식 최원국 2024-01-21T04:39:14Z 2024-01-21T04:39:14Z 2021-09-06 2005-07 1225-0562 https://pubs.kist.re.kr/handle/201004/136300 Polyvinylidene fluoride (PVDF) surface was irradiated and became superhydrophilic by low energy (180 eV) and high flux (~1015/cm2/s) ion beam. As an ion source, a closed electron Hall drift thruster of =70 mm outer channel size without grid was adopted. Ar, O2 and N2O were used for source gases. When N2O+ and O 2+ reactive gas ion beam were irradiated with the ion fluence of 5x1015/cm2, the wetting angle for deionized water was drastically dropped from 61 to 4 and 2, respectively. Surface energy was also increased up to from 44 mN/m to 81 mN/m. Change of chemical component in PVDF surface was analyzed by x-ray photoelectron spectroscopy. Such a great increase of the surface energy was intimately related with the increase of hydrophilic group component in reactive ion irradiated PVDF surfaces. By using an atomic force microscopy, the root-mean-square of surface roughness of ion irradiated PVDF was not much altered compared to that of pristine PVDF. 한국재료학회 저에너지 고출력 이온빔을 이용한 polyvinylidene fluoride 표면의 초친수성화 Superhydrophilic surface modification of polyvinylidene fluoride by low energy and high flux ion beam irradiation Article 2 한국재료학회지, v.15, no.6, pp.382 - 387 한국재료학회지 15 6 382 387 kci ART000964277 polyvinylidene fluoride closed electron Hall drift thruster surface energy surface modification by low energy ion beam x-ray photoelectron. polyvinylidene fluoride closed electron Hall drift thruster surface energy surface modification by low energy ion beam x-ray photoelectron.