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Thermal oxidation of polyorganosiloxanes
Author(s) -
Zhdanov A. A.,
Papkov V. S.
Publication year - 1986
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19860040121
Subject(s) - oxidizing agent , activation energy , vanadate , chemistry , kinetics , catalysis , induction period , oxygen , siloxane , tris , oxidative phosphorylation , inorganic chemistry , organic chemistry , biochemistry , polymer , physics , quantum mechanics
The kinetics of noninhibited and inhibited oxidation of poly[(diethyl)siloxane] oligomers (PDES) has been investigated. Phenyl‐ β ‐naphthylamine (PNA) and tris(triethylsiloxy)vanadate (TTESV) were used as antioxidants. It is shown that in the presence of PNA the oxidation of PDES proceeds with distinct induction periods. The activation energy of the initiation stage, estimated from temperature dependence of the induction periods, is about 230 kJ/mol. TTESV can act as inhibitor and catalyst in the oxidation of PDES, depending on temperature and content of oxygen in oxidizing mixture.