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Chemical recycling of polycarbonate in high pressure high temperature steam at 573 K |
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| Authors: | Masaru Watanabe Takashi Matsushita Toshiyuki Miyake |
| Institution: | a Research Center of Supercritical Fluid Technology, Tohoku University, 6-6-11 Aoba, Aramaki, Aoba-ku, Sendai 980-8579 Japan b Teijin Chemical Co. Ltd., Polymer Reserach Laboratory, 77 Kitayosida-cyo, Matsuyama 791-8041 Ehime, Japan |
| Abstract: | Polycarbonate (PC) could be completely decomposed into its monomer, bisphenol A (BPA) with high pressure (not atmospheric pressure) high temperature steam (573 K) in 5 min reaction time. The maximum yield of BPA was about 80 mol% based on the starting PC. PC decomposition at 573 K in liquid water phase near the saturated pressure for the comparison. For 30 min in reaction in liquid water at 573 K residual PC still remained and the BPA yield was about 50% as maximum. |
| Keywords: | Polycarbonate Bisphenol A Polymer hydrolysis Hydrothermal Supercritical water High pressure steam |
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