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

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

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

  • 基金项目:

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

摘要: 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.

English

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  • 发布日期:  2015-08-05
  • 收稿日期:  2014-12-31
  • 修回日期:  2015-01-27
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