Effect of the Monomer Ratio on the Properties of Melt-Polymerized Polycarbonate

In this study, the effects of bisphenol A (BPA) and diphenyl carbonate (DPC) molar ratio, on the properties of melt-polymerized polycarbonate (PC) were investigated. The molecular size distribution theory proposed by Flory was applied, to melt polymerization of PC to predict physical properties, aff...

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Bibliographic Details
Published in:Macromolecular research 2019, 27(12), , pp.1221-1228
Main Authors: Lim, Byung Hoon, Yi, Jin Woo, Park, O Ok
Format: Article
Language:English
Subjects:
Bisphenol A
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Estrogens
Nanochemistry
Nanotechnology
Physical Chemistry
Physical properties
Polycarbonate resins
Polymer Sciences
Polymerization
Size distribution
Soft and Granular Matter
고분자공학
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Summary:In this study, the effects of bisphenol A (BPA) and diphenyl carbonate (DPC) molar ratio, on the properties of melt-polymerized polycarbonate (PC) were investigated. The molecular size distribution theory proposed by Flory was applied, to melt polymerization of PC to predict physical properties, affected by the molar ratio of BPA and DPC. A terminal OH group affected the viscosity of PC at high temperatures, leading to instability during processing. With increase in the DPC/BPA molar ratio, terminal OH content decreased, albeit different from the theoretical predicted value, because of the volatilization of DPC. Additionally, BPA residual amount was affected by BPA and DPC molar ratio. BPA is regulated in countries because of its similarity to estrogen, and BPA residues can be predicted and managed by using the Flory equation.
ISSN:1598-5032
2092-7673
DOI:10.1007/s13233-019-7169-2