Chemical recycling of postconsumer PET bottles (CROSBI ID 576984)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Ptiček Siročić, Anita ; Hrnjak-Murgić, Zlata ; Jelenčić, Jasenka
engleski
Chemical recycling of postconsumer PET bottles
Nowadays the poly (ethylene-terephtalate), PET is one of the most commonly used synthetic polymers due to the growing application as an engineering plastic. The disposal of a large number of PET products, especially PET bottles has caused serious environmental problems and researchers have begun to focus on recycling and management of plastic wastes. Chemical decomposition of PET and conversion into reusable chemical products is one of the important recycling strategies for this material. In this work PET bottles waste was chemically recycled by glycolysis process. The glycolysis reaction was carried out at three temperatures 170, 180 and 190 °C in different time intervals (1, 3, 6 hours) with a weight ratio of ethylene glycol (EG) to PET 1:18. Bis(2-hydroxyethyl)terephthalate (BHET), dimer and various types of PET oligomers are predominately glycolysis products. The glycolysis products were analysed and identified by Fourier infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). It was found that depending on the reaction conditions the glycolysis products consist mainly of monomer BHET, which was effectively separated from the other products. High concentration of obtained monomer and dimer BHET confirmed that almost complete depolymerization of PET polymer to monomers is achieved at 190 °C after 6 h of glycolysis. Also, from the results it can be seen that remained PET products i.e. oligomers are thermally very stable and they are suitable to obtain other polymers.
chemical recycling; glycolysis; poly(ethylene-terephthalate)
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nije evidentirano
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nije evidentirano
nije evidentirano
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Podaci o prilogu
110-110.
2011.
objavljeno
Podaci o matičnoj publikaciji
3 rd International Symposium on Environmental Management Towards Sustainable Technologies, Book of Abstracts
Koprivanac, Natalija ; Kušić, Hrvoje ; Lončarić Božić, Ana
Zagreb: Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu
978-953-6470-55-6
Podaci o skupu
3rd International Symposium on Environmental Management – Towards Sustainable Technologies
poster
26.10.2011-28.10.2011
Zagreb, Hrvatska