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On the thermal degradation of poly(vinyl chloride). I. An apparatus for investigation of early stages of thermal degradation
Author(s) -
Abbås Kent B.,
Sörvik Erling M.
Publication year - 1973
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.1973.070171202
Subject(s) - vinyl chloride , degradation (telecommunications) , hydrogen chloride , materials science , reproducibility , chloride , polyvinyl chloride , suspension (topology) , thermal , polymer chemistry , polymerization , chemical engineering , chemistry , analytical chemistry (journal) , composite material , inorganic chemistry , organic chemistry , polymer , chromatography , thermodynamics , metallurgy , telecommunications , mathematics , physics , homotopy , computer science , pure mathematics , engineering , copolymer
A dehydrochlorination apparatus is described for studies of the early stages of the thermal degradation of poly(vinyl chloride) (PVC), combining good reproducibility, high accuracy, and a low detection limit. The evolved hydrogen chloride is absorbed in water and the electrical conductivity is continuously recorded. Measurements of the rate of dehydrochlorination repeated over an extended period of time showed a standard deviation of 2% of the mean value. The activation energies for the dehydrochlorination in nitrogen for two commercial suspension‐polymerized samples were found to be 27.9 ± 1.5 and 26.2 ± 0.6 kcal/mole.