Premium
Pyrolysis and thermo‐oxidative degradation of polycyclopentadiene
Author(s) -
Radhakrishnan T. S.
Publication year - 2000
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/(sici)1097-4628(20000502)76:5<635::aid-app4>3.0.co;2-p
Subject(s) - pyrolysis , activation energy , degradation (telecommunications) , decomposition , polybutadiene , ammonium perchlorate , arrhenius equation , arrhenius plot , thermal decomposition , polymer , chemical decomposition , heat of combustion , chemistry , ethylene , materials science , polymer chemistry , polymer degradation , chemical engineering , organic chemistry , combustion , copolymer , catalysis , telecommunications , computer science , engineering
Thermal degradation of polycyclopentadiene polymer (PCPD) was investigated by pyrolysis gas chromatography (PGC) in the temperature range of 500–950°C. The nature and composition of the pyrolyzates at various temperatures are presented, and the mechanism of degradation is explained. The activation energy of decomposition ( E a ) was obtained from an Arrhenius‐type plot using the concentration of the product ethylene (C 2 ) at different pyrolysis temperatures and the value was found to be 138 kJ mol −1 . Thermo‐oxidative degradation of PCPD in the presence of ammonium perchlorate (AP), the most commonly used oxidizer for polymeric fuel binders, was studied at a pyrolysis temperature of 700°C. The compositions of the products with varying amounts of AP are given, and the exothermicity of oxidative decomposition reactions is evaluated. The energetics of the degradation processes are compared with those of polybutadiene type polymers. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 76: 635–641, 2000