Method for combined treatment of polyvinyl chloride by rubber oxidase

• Main Authors: WANG LEI, KONG DEMIN, ZHANG HUI, LIU ZHANZHI, SHI MENG, WU JING, CHEN SHENG, ZHOU JINGPENG, ZHANG FENGSHAN, LIU YANSHAO
• Format: Patent
• Language: Chinese; English
• Published: 19.04.2024
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The invention discloses a method for jointly treating polyvinyl chloride by rubber oxidase, and belongs to the fields of environmental science, material science and enzyme engineering. According to the method disclosed by the invention, the polyvinyl chloride is subjected to dechlorination treatment, and the PVC is subjected to enzymolysis dechlorination in combination with the rubber oxidase, so that the number-average molecular weight of the treated polyvinyl chloride can be reduced to 14289 Da from the initial 28567 Da, the weight-average molecular weight of the treated polyvinyl chloride is reduced to 75570 Da from the initial 82340 Da, and a new thought is provided for biodegradation of the polyvinyl chloride. 本发明公开了一种橡胶氧化酶联合处理聚氯乙烯的方法，属于环境科学、材料学及酶工程领域。本发明通过脱氯处理聚氯乙烯，结合橡胶氧化酶酶解脱氯PVC，可使处理后的聚氯乙烯数均分子量由最初的28567Da降低至14289Da，重均分子量由最初的82340Da降低至75570Da，为聚氯乙烯的生物降解提供了新的思路。