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Elution of Plasticizer fvom PVC Sheet in Alkaline Solutions  

신선명 (한국지질자원연구원 자원활용연구부)
전석호 (한국지질자원연구원 자원활용연구부)
한오형 (조선대학교 자원공학과)
Publication Information
Resources Recycling / v.11, no.2, 2002 , pp. 14-19 More about this Journal
Abstract
PVC sheet was treated in O~10M NaOH solutions at $80~150^{\circ}C$ for O~7 hour, in order to study the leaching phenomena of plasticizer. The yield of phthalic acid produced by hydrolysis of DOP was increased greatly with increasing temperature and NaOH concentration by accelerating of alkali catalyst. The yield of phthalic acid was reached ca. 100% in 10M NaOH at $150^{\circ}C$ over 3 hours. Therefore, the plasticizer containing 30% in PVC sheet could be hydrolyzed in alkali solutions before the occurrence of dehydrochlorination. Besides, in the thermal reaction, the pores were produced in the PVCsheet by the hydrolysis of DOP.
Keywords
PVC sheet; PVC sheet; Plasticizer; Phthalic acid; Hydrolysis; Dehydrochlorination;
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