Premium
Mössbauer studies of ferric chloride containing ethyl methacrylate‐ n ‐butyl methacrylate copolymer
Author(s) -
Kapur G. S.,
Brar A. S.
Publication year - 1990
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1990.070410909
Subject(s) - copolymer , methacrylate , ferric , polymer chemistry , thermal stability , anhydrous , chloride , mössbauer spectroscopy , methyl methacrylate , polymerization , materials science , nuclear chemistry , chemistry , inorganic chemistry , organic chemistry , polymer , crystallography
Ethyl methacrylate(EMA)‐ n ‐butyl methacrylate ( n BuMA) copolymer containing anhydrous ferric chloride was prepared by free radical polymerization at 70°C. TGA studies show that the addition of ferric chloride increases the thermal stability of the copolymer. Mössbauer studies of the copolymers showed the presence of Fe 3+ species only. Mössbauer studies of the copolymer heated at 150°C, 250°C, and 500°C for 1 h showed that during the thermal degradation, Fe 3+ species are reduced to Fe 2+ and then finally α‐Fe 2 O 3 is formed. The mechanism of thermal degradation has been proposed on the basis of IR, TGA, and Mössbauer studies.