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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 |
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| Authors: | Yoshimitsu Uemura Yoh-suke Maetsuru Tomoharu Fujita Masahiro Yoshida Yasuo Hatate Kenji Yamada |
| Affiliation: | (1) R&D Division, Kagoshima TLO Co., Ltd., 1-21-40 Korimoto, 890-0065 Kagoshima, Japan;(2) Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Kagoshima University, 1-21-40 Korimoto, 890-0065 Kagoshima, Japan;(3) Department of Materials Science and Chemical Engineering, Kitakyushu National College of Technology, Kokuraminami-ku, 802-0985 Kitakyushu, Japan |
| 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 water-vapor 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. |
| Keywords: | Poly(L-lactic acid) Water Vapor Permeability Low Temperature Plasma Tetramethoxysilane |
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