✦ LIBER ✦

X-ray photoelectron spectroscopy: A new method for determination of copolymer composition, and monomer reactivity ratios and monomer sequence distribution therefrom

✍ Scribed by Dibyendu S. Bag; Sukumar Maiti

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 168 KB
Volume: 35
Category: Article
ISSN: 0887-6266
DOI: 10.1002/(sici)1099-0488(19970930)35:13<2049::aid-polb5>3.0.co;2-r

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✦ Synopsis

Copolymer compositions and reactivity ratios for the radical copolymerization of styrene with acrylonitrile have been determined by x-ray photoelectron spectroscopy (XPS). The results obtained by this technique were confirmed by elemental as well as 1 H-NMR (nuclear magnetic resonance) analysis. The monomer sequence distributions have also been calculated utilizing the monomer reactivity ratio values obtained by three different techniques viz., XPS, 1 H-NMR, and elemental analysis. The agreement between the monomer sequence distributions in the copolymer chain by these methods is very satisfactory.