Influence of Surface Printing Materials on the Degradability of Biodegradable Plastic Films in Soil (Soil Biology)
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概要
- 論文の詳細を見る
Effect of surface printing on the biodegradability of plastic films was studied. Biodegradable films (polybutylene-succinate (PBS)) printed with four kinds of gravure inks were placed in soil for 1 year. The inks consisted of carbon black-pigment with four kinds of resins: poly-(e-caprolactone) (PCL), nitrocellulose-polyamide blended resin (NT), polyvinyl chloride-vinyl acetate copolymer (V), and nitrocellulose (NC). Degradation of film specimens printed on one side and both sides as well as the control film without printing was monitored every 3 months by collecting sample specimens for the measurement of weight loss. No appreciable degradation was observed until 6 months after placement in soil for the control specimens and until 9 months for the printed specimens. And the degradation of the PCL- and NC-printed specimens with one-side printing and V-printed specimens with both-side printing was significantly slower than that of the control specimens without printing after 9-month placement at p < 0.05. Only after 12 months of placement, was the degradation significantly faster for the specimens printed on one side than for those printed on both sides except of the specimens printed with NC. There was no difference in biodegradability among PCL, NT, NC, and V resins. Specimens printed on both sides did not show any appreciable weight loss after 1 year in soil (percentage of maintenance of weight exceeding 98%). Microscopic observation indicated that the degradation mainly proceeded from the non-printed side to the printed side cross-sectionally.
- 社団法人日本土壌肥料学会の論文
著者
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KIMURA Makoto
Graduate School of Bioagricultural Sciences, Nagoya University
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Sakai Shigeichi
Dainichiseika Colour & Chemicals Mfg. Co. Ltd.
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Hoshino Akira
Dainichiseika Colour & Chemicals Mfg. Co. Ltd.
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Kanao Shinzou
Dainichiseika Colour & Chemicals Mfg. Co., Ltd.
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Fukushima Kenji
Dainichiseika Colour & Chemicals Mfg. Co., Ltd.
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Kanao Shinzou
Dainichiseika Colour & Chemicals Mfg. Co. Ltd.
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Fukushima Kenji
Dainichiseika Colour & Chemicals Mfg. Co. Ltd.
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Kimura Makoto
Graduate School Of Bioagricultural Sciences Nagoya University
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Kimura Makoto
Graduate School Of Bioaghcultural Science Nagoya University
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Kimura Makoto
Graduate School Of Agricultural Sciences Nagoya University
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