Citation: Yu-ling He, Yi-lan Guo, Rui He, Tian-xiang Jin, Feng Chen, Qiang Fu, Nan Zhou, Ji Shen. Towards High Molecular Weight Poly(bisphenol A carbonate) with Excellent Thermal Stability and Mechanical Properties by Solid-State Polymerization[J]. Chinese Journal of Polymer Science, ;2015, 33(8): 1176-1185. doi: 10.1007/s10118-015-1667-2 shu

Towards High Molecular Weight Poly(bisphenol A carbonate) with Excellent Thermal Stability and Mechanical Properties by Solid-State Polymerization

Yu-ling He ¹ ,
Yi-lan Guo ¹ ,
Rui He ¹ ,
Tian-xiang Jin ¹ ,
Feng Chen ¹ ,
Qiang Fu ¹ ,
Nan Zhou ² ,
Ji Shen ²

1.
College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
2.
China Bluestar Chengrand Chemical Co., Ltd., Chengdu 610041, China

Received Date: 31 December 2014
Revised Date: 27 January 2015

Fund Project: This work was financially supported by the National Natural Science Foundation of China (No. 51173112).

Poly(bisphenol A carbonate) (BPA-PC) was post-polymerized by solid-state polymerization (SSP) after supercritical CO2-induced crystallization in low molecular weight particles prepolymerized via melt transesterification reaction. The effects of the crystallization conditions on melting behavior and SSP of BPA-PC were investigated with differential scanning calorimetry (DSC), Ubbelohde viscosity method and gel permeation chromatography (GPC). The reaction kinetics of the SSP of crystallized prepolymers was studied as a function of reaction temperatures for various reaction periods. As a result, the viscosity average molecular weight of BPA-PC particles (2 mm) increased from 1.9104 g/mol to 2.8104 g/mol after SSP. More importantly, the significantly enhanced thermal stability and mechanical properties of solid-state polymerized BPA-PC, compared with those of melt transesterification polymerized BPA-PC with the same molecular weight, can be ascribed to the substantial avoidance of undergoing high temperature during polymerization. Our work provides a useful method to obtain practical product of BPA-PC with high quality and high molecular weight.
- Poly(bisphenol A carbonate),
- Solid-state polymerization,
- Supercritical CO2-induced crystallization,
- High molecular weight,
- High quality
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