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, cilt.95, sa.2, ss.393-399, 2005 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 95 Sayı: 2
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1002/app.21376
  • Dergi Adı: JOURNAL OF APPLIED POLYMER SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.393-399
  • İstanbul Teknik Üniversitesi Adresli: Hayır

Özet

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.