The effect of PVC on thermal and catalytic degradation of polyethylene, polypropylene and polystyrene by a continuous flow reactor |
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| Authors: | Katsuhide Murata Mihai Brebu Yusaku Sakata |
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| Institution: | aToyohashi University of Technology, Tempaku, Toyohashi 441-8580, Japan;b“Petru Poni” Institute of Macromolecular Chemistry, Iasi 700487, Romania;cOkayama University, Tsushima Naka, Okayama 700-8530, Japan |
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| Abstract: | A continuous flow reactor was operated at atmospheric pressure and feed rate of 0–1.5 kg h−1 for degradation of PE, PP and PS in presence of 1–2 wt% PVC. The degradation temperatures were between 360 and 440 °C depending on the feeding material. The influence of PVC, temperature and silica-alumina catalysts on degradation behavior and on the properties of the products was studied and discussed. Different effects were observed for binary PE/PVC, PP/PVC, PS/PVC and complex PE/PP/PS/PVC mixtures due to specific interactions between PVC and each hydrocarbon polyolefin. Silica-alumina catalysts decreased the Cl concentration in oils but it seems to generate high amounts of Cl-containing organic compounds in gases. |
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| Keywords: | PVC PE PP PS Polyolefins Silica-alumina Catalytic degradation Continuous flow reactor |
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