Citation: Zhi Yan PAN, Zhen BAO, Ying Xu CHEN. Depolymerization of Poly(bisphenol A carbonate) in Subcritical and Supercritical Toluene[J]. Chinese Chemical Letters, ;2006, 17(4): 545-548. shu

Depolymerization of Poly(bisphenol A carbonate) in Subcritical and Supercritical Toluene

1.
Department of Environmental Engineering, Zhejiang University, Hangzhou 310027;
2.
College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032

Received Date: 20 June 2005

Fund Project: The financial support (NO.299014) for this work provided by Zhejiang Natural Science Foudation is gratefully acknowledged.

The depolymerization of poly(bisphenol A carbonate)(PC) in subcritical and supercritical toluene was studied. The experimental parameters, which influence the depolymerization reaction such as temperature (570-633 K), pressure (4.0-7.0 MPa), reaction time (5-60 min), and toluene to PC weight ratio (3.0-11.0), were investigated, and the reaction products were determined by GC, GC/MS and FT-IR spectrometer. It was found that the main product of the depolymerization reaction was bisphenol A(BPA). BPA accounted for over 55.7% of the depolymerization products at reaction temperature 613 K, pressure 5.0-6.0 MPa, reaction time 15 min and toluene/PC weight ratio of around 7.0.
- Depolymerization,
- poly(bisphenol A carbonate),
- supercfiticai toluene
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