알카리水溶液중에서 PVC Sheet로부터 可塑의 抽出
Elution of Plasticizer from PVC Sheet in Alkaline Solutions
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
PVC(polyvinyl chloride)sheet 를 NaOH 수용액중에서반응온도 80~150oC, 반응시간 0~7 시간으로처리하여가소제의침출에관해서검토하였다. DOP 의가수분해에의해서생성된프탈산수율은알카리촉매로써 NaOH 농도의증가와온도의상승으로인해증가하고, 150oC, 10M NaOH, 3 시간이상에서프탈산수율은거의 100%에달했다. 따라서 PVC sheet 에 30% 포함되어져있는가소제는알카리수용액중에서탈염화수소가일어나기이전에가수분해되어졌다. 또한, PVC 필름의수열처리에서는 DOP 의가수분해로인해세공이생성되었다
Abstract
PVC sheet was treated in 0~10M NaOH solutions at 80~150oC for 0~7 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 150oC 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.