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Received January 5, 2005
Accepted August 24, 2005
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The effect of coatings formed by low temperature tetramethoxysilane plasma treatment on water-vapor permeability of poly(L-lactic acid) film
Yoshimitsu Uemura†
Yoh-suke Maetsuru1
Tomoharu Fujita1
Masahiro Yoshida1
Yasuo Hatate1
Kenji Yamada2
R&D Division, Kagoshima TLO Co., Ltd., 1-21-40 Korimoto, Kagoshima 890-0065, Japan 1Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan 2Department of Materials Science and Chemical Engineering, Kitakyushu National College of Technology, Kokuraminami-ku, Kitakyushu 802-0985, Japan
uemura@ktlo.co.jp
Korean Journal of Chemical Engineering, January 2006, 23(1), 144-147(4), 10.1007/BF02705706
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Abstract
One of the most promising applications of poly(L-lactic acid) (PLLA) is food packaging. However, PLLA has a poorer gas barrier property than ordinary food packaging polymers. An improvement of the water-vapor barrier property is therefore required. In this study, low temperature plasma treatment on a stretched PLLA film in the presence of tetramethoxysilane (TMOS) was carried out in order to improve its water-vapor barrier property. The flux of watervapor permeation through a stretched PLLA film treated with low temperature plasma in the presence of TMOS was decreased to 60% of an untreated stretched PLLA. The effects of plasma treatment parameters on the water-vapor permeability were investigated.
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Inagaki N, Plasma surface modification and plasma polymerization, Technomic, Lancaster, USA, p.38 (1996)
Lehermeier HJ, Dorgan JR, Way JD, J. Membr. Sci., 190(2), 243 (2001)
Mills R, Cost performance of novel PLA resins in high clarity, oriented film applications, Proceedings for the 15th Annual World Congress on Specialty Plastic Films, Session VIII4 (1999)
Nah JW, Jeong YI, Koh JJ, Korean J. Chem. Eng., 17(2), 230 (2000)
Song KH, Lee CH, Lim JS, Lee YW, Korean J. Chem. Eng., 19(1), 139 (2002)
Teshima K, Inoue Y, Sugimura H, Takai O, Vacuum, 66, 353 (2002)
Uemura Y, Fujita T, Yoshida M, Hatate Y, Yamada K, Effect of low temperature plasma treatment on water-vapor permeability of plasticized PLLA film, Proceedings for APCChE 2004, 2B-09 (2004)
Yoon JS, Jung HW, Kim MN, Park ES, J. Appl. Polym. Sci., 77(8), 1716 (2000)
