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KMID : 1024520150240010009
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Journal of the Environmental Sciences
2015 Volume.24 No. 1 p.9 ~ p.15
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Study on Phase Separation of Carbon Dioxide-reducible Polymer Blends
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Cho Yong-Kwang
Kim Yeong-Woo
Lee Hak-Yong
Park Sang-Bo
Park Chan-Young
Lee Won-Ki
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Abstract
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Sustainable and eco-friendly polymers, natural polymers, bio-based polymers, and degradable polyesters, are of growing interest because of environmental concerns associated with waste plastics and emissions of carbon dioxide from preparation of petroleum-based polymers. Degradable polymers, poly(butylene adipate-co-terephthalate) (PBAT), poly(propylene carbonate) (PPC), and poly(L-lactic acid) (PLLA), are related to reduction of carbon dioxide in processing. To improve a weak mechanical property of a degradable polymer, a blending method is widely used. This study was forced on the component separation of degradable polymer blends for effective recycling. The melt-mixed blend films in a specific solvent were separated by two layers. Each layer was analysed by FT-IR, DSC, and contact angle measurements. The results showed that each component in the PPC/PLLA and PPC/PBAT blends was successfully separated by a solvent.
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KEYWORD
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Carbon dioxide, Degradable polyesters, Blending method, Component separation, Recycling
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