Melt polymerization of bisphenol-A and diphenyl carbonate in a semibatch reactor

Boo G. Woo, Kyu Yong Choi, Kwang Ho Song, Sang H. Lee

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The effect of thermodynamic phase equilibrium on the kinetics of semi-batch melt polycondensation of bisphenol-A and diphenyl carbonate was studied for the synthesis of polycarbonate. In the melt-polymerization process, a partial loss of diphenyl carbonate occurs as the reaction by-product phenol is removed from the reactor. To obtain a high molecular weight polymer under high temperature and low-pressure conditions, a stoichiometric mol ratio of the two reactive end groups needs to be maintained during the polymerization. In this work, vapor - liquid equilibrium data for a binary mixture of phenol and diphenyl carbonate are reported and they are used in conjunction with the Wilson equation to calculate the exact amounts of diphenyl carbonate and phenol returned from a reflux column to the reactor. A good agreement between the reactor model simulations and the experimental polymerization data was obtained. It was also observed that diphenyl carbonate is quickly consumed during the early stage of polymerization and the fraction of evaporated diphenyl carbonate refluxed to the reactor is essentially constant during this period.

Original languageEnglish
Pages (from-to)1253-1266
Number of pages14
JournalJournal of Applied Polymer Science
Volume80
Issue number8
DOIs
Publication statusPublished - 2001 May 23
Externally publishedYes

Fingerprint

Carbonates
Polymerization
Phenol
Phenols
polycarbonate
Phase equilibria
Polycondensation
Polycarbonates
Binary mixtures
Byproducts
diphenyl
bisphenol A
Polymers
Molecular weight
Thermodynamics
Kinetics

Keywords

  • Melt polymerization
  • Polycarbonate
  • Polymerization modeling
  • Semibatch polymerization
  • Vapor-liquid equilibrium

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

Melt polymerization of bisphenol-A and diphenyl carbonate in a semibatch reactor. / Woo, Boo G.; Choi, Kyu Yong; Song, Kwang Ho; Lee, Sang H.

In: Journal of Applied Polymer Science, Vol. 80, No. 8, 23.05.2001, p. 1253-1266.

Research output: Contribution to journalArticle

Woo, Boo G. ; Choi, Kyu Yong ; Song, Kwang Ho ; Lee, Sang H. / Melt polymerization of bisphenol-A and diphenyl carbonate in a semibatch reactor. In: Journal of Applied Polymer Science. 2001 ; Vol. 80, No. 8. pp. 1253-1266.
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