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Polymerization kinetics in propellants of the hydroxyl‐terminated polybutadiene–isophorone diisocyanate system
Author(s) -
Yee Rena Y.,
Adicoff Arnold
Publication year - 1976
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.1976.070200422
Subject(s) - isophorone diisocyanate , ammonium perchlorate , polybutadiene , polymer chemistry , polymerization , isophorone , hydroxyl terminated polybutadiene , kinetics , propellant , activation energy , copolymer , perchlorate , chemistry , polyurethane , materials science , organic chemistry , polymer , diamine , ion , physics , quantum mechanics
The copolymerization of a hydroxyl‐terminated polybutadiene with isophorone diisocyanate in a propellant formulation has been studied. The kinetic rates for four different reaction temperatures have been measured both in gumstock and samples containing ammonium perchlorate. It is shown that the presence of ammonium perchlorate (up to 90% by weight) neither catalyzes nor retards the rate of binder polymerization. It is also shown that the polymerization follows an apparent second‐order rate low with an activation energy of 9.8 kcal/mole.