Influence of poly(bisphenol A carbonate) and poly(ethylene terephthalate) on poly(vinyl chloride) dehydrochlorination |
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Authors: | Krzysztof German Kamil Kulesza Miriam Florack |
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Institution: | (1) Department of Chemistry and Technology of Polymers, Cracow University of Technology, Kraków, Poland;(2) Blachownia Institute of Heavy Organic Synthesis, Kędzierzyn-Koźle, Poland;(3) Present address: Politechnika Krakowska, Samodzielna Katedra Chemii i Technologii Tworzyw Sztucznych, ul. Warszawska 24, 31–155, Kraków, Poland |
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Abstract: | Recycling of poly(vinyl chloride) (PVC) waste is a serious problem because of its high chlorine content. Dehydrochlorination
of PVC-containing polymer waste produces solid residue char, for which conversion to pyrolysis oil in a petrochemical plant
seems to be an attractive way of recycling PVC waste. Unfortunately, some polymer admixtures react with HCl and cause formation
of chloroorganic compounds in a char. This article describes the influence of polycarbonates and poly(ethylene terephthalate)
on thermal feedstock recycling of PVC wastes using a two-stage method. It was found that the presence of polycarbonate causes
the formation of small amounts of benzyl chloride and other chloroaryl or chloroalkylaryl compounds. Poly(ethylene terephthalate)
interacts with HCl forming significant amounts of various chlorocompounds – mainly chloroethyl esters of terephthalic and
benzoic acids, but derivatives possessing chlorine directly connected to the aromatic ring are also formed. |
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Keywords: | PVC BPA-based PC PET Recycling Pyrolysis |
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