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>일반적으로 사용되는 PC의 투습도 값을 알고 싶습니다. Sorption and diffusion of water vapor in poly(ethylene terephthalate) film Shigetomi T, Tsuzumi H, Toi K, Ito T JOURNAL OF APPLIED POLYMER SCIENCE 76 (1): 67-74 APR 4 2000 Document type: Article Language: English Cited References: 26 Times Cited: 1 Abstract: The sorption and diffusion of water vapor in poly(ethylene terephthalate) (PET) film were measured by applying a thermogravimetric analyzer (TG-DTA), which customarily has been used to detect the weight loss of a sample with the increase of temperature under a given atmosphere. In this case, we detected the weight gain of PET film by sorption of water vapor under a given humidity at a constant temperature. Sorption-rate curves were successfully obtained in spite of the low solubility of PET film and the presence of Fickian-type curves. The solubility was better described according to the dual-mode sorption model. The diffusion coefficients were determined in their initial slopes by the short-time method. We found that the diffusion coefficient depended on vapor pressure. (C) 2000 John Wiley & Sons, Inc. Author Keywords: sorption, diffusion, water vapor, PET film, TG-DTA, dual-sorption model KeyWords Plus: GLASSY-POLYMERS, TRANSPORT, POLYCARBONATE, PERMEATION, TRANSITION, GASES Addresses: Toi K, Tokyo Metropolitan Univ, Dept Chem, Grad Sch Sci, Hachioji, Tokyo 1920397, Japan Tokyo Metropolitan Univ, Dept Chem, Grad Sch Sci, Hachioji, Tokyo 1920397, Japan Otsuma Womens Univ, Sch Social Informat Studies, Karakidi, Tama 2068540, Japan Publisher: JOHN WILEY & SONS INC, NEW YORK IDS Number: 278UZ ISSN: 0021-8995 해답이 나오지 않을까 싶습니다. 제가 지금 Wiley Interscience subscription 이 없네요. 다른분들이 도와주시면 좋을듯. 하나더... On the uptake of water vapor by ion irradiated polyimide Fink D, Klett R, Muller M, Hu XW, Chadderton LT, Wang L, Hillenbrand J RADIATION EFFECTS AND DEFECTS IN SOLIDS 140 (3-4): 263-286 1997 Document type: Article Language: English Cited References: 25 Times Cited: 0 Abstract: It is known that ion-irradiated polymers are capable to adsorb dopants from solid, liquid or gaseous phases. For simple ambient atmosphere exposures, oxygen and water vapor are the most prominent dopants. Though the quantity of the latter one is not sufficient to be probed by conventional spectroscopic techniques, it can be detected indirectly via its ionic conductivity on applying a strong electric field along the track direction, as long as it is not yet masked by the intrinsic ion track conductivity, which is the case for low-fluence polymer irradiation. The conductivity is of similar order for most low-fluence irradiated polymers examined namely 10(-15)- 10(-13) Omega(-1) cm(-1) Water vapor uptake-as determined via the ion track conductivity-sensitively depends on the ambient air humidity, so that fresh low fluence irradiated polymers can act as humidity sensors. Aging however leads to rapid deterioration of this property within a week exposure time at ambient room temperature and pressure. The water vapor absorption process in tracks is reversible, and the amount of water retained depends specifically on the polymer. Thus, whereas for polyimide, polycarbonate, polypropylene, and polytetrafluoride some water vapor adsorption is detected, polymethylmethacrylate and polyethyleneterepthalate exhibit little or no effect. Moreover, uptake of water vapor is restricted to the latent ion tracks themselves, and is barely detectable in neighboring pristine material. It scales linearly with the deposition of electronic energy along the ion track. Author Keywords: latent ion tracks, polymers, polyimide, electronic energy transfer, doping, ambient atmosphere, water vapor, adsorption, conductivity, depth profiles KeyWords Plus: LIGHT-IONS, POLYMERS, TRACKS, CONDUCTIVITY, POLYETHYLENE, KAPTON, HEAVY, PMMA Addresses: Fink D, Hahn Meitner Inst Kernforsch Berlin GmbH, Glienicker Str 100, D-14109 Berlin, Germany Hahn Meitner Inst Kernforsch Berlin GmbH, D-14109 Berlin, Germany Chinese Inst Atom Energy, Beijing, Peoples R China CSIRO, Div Appl Phys, Res Sch Phys Sci, ANU, Canberra, ACT 2601, Australia Gesell Schwerionenforsch GmbH, D-64291 Darmstadt, Germany Publisher: GORDON BREACH SCI PUBL LTD, READING IDS Number: 190YK ISSN: 1042-0150