초록

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Abstract ▼ AI-Helper

This study investigated that biodegradable plastic is put for making compost from food waste, whether it influences biodegradable response or activates microorganisms during compost process of raw biodegradable plastic in practice. Six types of 30% biodegradable plastic, four types of 100% biodegrad...

This study investigated that biodegradable plastic is put for making compost from food waste, whether it influences biodegradable response or activates microorganisms during compost process of raw biodegradable plastic in practice. Six types of 30% biodegradable plastic, four types of 100% biodegradablr plastic and two types of non biodegradable plastic were used for test material and compost response was processed at temperature of 60∼70℃, 38∼45% of water contents in good condition. In case of 30% biodegradable plastics, four goods among six showed 15∼25% of reduction rate of weight and HDPE style showed bigger reduction rate than LLDPE. As compared to non biodegradable plastic, regarding physical character had less strain at auto break and stress at max load and LLDPE type showed bigger reduction than HDPE type. It is expected that this situation was due to LLDPE which is weak in heat. Three goods among four of 100% biodegradable plastic showed excellent degradation and it clearly showed that it was disintegrated by microorganisms in the result of observation of surface by electric microscope. 30% of biodegradable plastic was disintegrated but it maintained the film style even after compost response, therefore, it isn"t compatible to use for exclusive bag for food waste. 100% biodegradable plastic was compatible to use for exclusive bag for food waste but manufacturing expenditure is high. Likewise, it is considered that we should try to develop quality of bag more and reduce manufacturing expenditure to popularize use of biodegradable plastic.

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