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KMID : 0382420020280020041
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Korean Journal of Environmental Health Society
2002 Volume.28 No. 2 p.41 ~ p.49
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Development of Depolymerization Method on the Recycling of Waste Flexible Polyurethane Foam
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Eom Jae-Yeol
Lee Byung-Hak
Shin Pan-Woo
Kim Yong-Yeul
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Abstract
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Resource recovery and recycling of materials and products including polyurethanes are viewed as a necessity in today’s society. The problems of recycling polyurethane wastes has major technological. economic and ecological significance because polyurethane itself is relatively expensive and its disposal by burning is also costly. In general. the recycling methods for polyurethane could be classified as mechanical. chemical and physical. In the chemical recycling method. there arc hydrolysis. glycolysis. pyrolysis and aminolysis. This study was carried out glycolysis using new method such as sonication and catalyzed reaction. There arc kinds of recycled polyols were produced by current method(glycolysis) but. this study’ were with catalyzed reaction and sonication as decomposers and the chemical properties were analyzed. The reaction results in the formation of polyester urethane diols and then the OH value which is determined by the quantity’ of diol used for thl glycolysis conditions.
The glycolysis rates by sonication and catalyzed reaction for the various glycols. increased as: PI’G
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