Application of parameter estimation techniques to analyze the kinetics of liquid crystalline copolyesters

Ghazi Al-Enezi, Johnson Mathew, Mansour Karkoub, Ali Elkamel

Research output: Contribution to journalArticle

Abstract

Kinetics of copolyesterification between poly(butylene terephthalate) PBT and 4-acetoxy benzoic acid (ABA) in the melt have been analyzed using a simple approach. A simple second order reaction sequence summarizes catalysed and uncatalysed reactions between ABA and PBT. The kinetic parameters for the copolymerization reaction were determined using a simultaneous non-linear programming method. This technique was used to compute the moles of ABA reacted. This data was compared to that of the experimentally determined data. Close comparison (R.M.S. error ±0.003) was obtained between the experimental and theoretical data. The kinetic data support block copolyester formation. The thermal data also gave support to this behavior.

Original languageEnglish
Pages (from-to)317-336
Number of pages20
JournalKuwait Journal of Science and Engineering
Volume28
Issue number2
Publication statusPublished - 1 Dec 2001

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Keywords

  • Copolymers
  • Kinetics
  • LCP's
  • Poly(butylene terephthalate)

ASJC Scopus subject areas

  • General

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