Copolymerization reactivity ratios analysis of sequentially sampled data by error in variables method

Paril A., Giz A. T., CATALGIL-GIZ H.

JOURNAL OF APPLIED POLYMER SCIENCE, vol.95, no.2, pp.393-399, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 95 Issue: 2
  • Publication Date: 2005
  • Doi Number: 10.1002/app.21376
  • Journal Name: JOURNAL OF APPLIED POLYMER SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.393-399
  • Istanbul Technical University Affiliated: No

Abstract

A new method for estimating copolymerization reactivity ratios, by sequentially sampling the reaction medium and analyzing the samples by ultraviolet spectroscopy and gravimetry, was developed. The data were analyzed by a new error-in-variables method. The method was applied to solution copolymerization of the styrene (Sty)methyl methacrylate (MMA) system in butyl acetate at 65degreesC, for which reactivity ratios were r(MMA) = 0.660 +/- 0.050 and r(Sty) = 0.309 +/- 0.050. The data were also analyzed by the Kelen-Tudos and the Extended Kelen-Tudos methods where the methods are applicable. (C) 2004 Wiley Periodicals, Inc.