期刊
MACROMOLECULAR MATERIALS AND ENGINEERING
卷 295, 期 6, 页码 575-584出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.201000050
关键词
hydrolysis; microwave irradiation; recycling; poly(ethylene terephthalate)
资金
- King Abdulaziz City for Science and Technology (KACST), Riyadh, Saudi Arabia [AR-27-101]
- King Fand University of Petroleum and Minerals
- Laboratory of Organic Chemical Technology, Department of Chemistry, Aristotle University of Thessaloniki, Greece
Recycling of PET was examined using hydrolytic depolymerization in an alkaline solution under microwave irradiation. The reaction was carried out in a sealed microwave reactor in which the pressure and temperature were controlled and recorded. The main products were the monomers TPA and EG. The effect of reaction temperature, time, amount of PET and alkaline concentration on the degree of PET depolymerization and TPA recovery was investigated. Microwave irradiation was found to reduce the time needed to achieve a specific degradation of PET significantly, with almost complete depolymerization occurring in 30 min at 180 C and only 46 W of microwave power. Using a phase transfer catalyst (TOMAB) resulted in the same amount of unreacted PET but at significantly lower depolymerization temperatures.
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