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Kinetic Study on the Cationic Polymerization of Glycidyl Azide Monomer(GAM) by Real-Time In-suti IR  

Kim, Hyoung-Sug (Hanyang University)
Kim, Kwan-Yung (Hanyang University)
Kang, Shin-Choon (Hanyang University)
Noh, Si-Tae (Hanyang University)
Kim, Jin-Seuk (ADD)
Yu, Jae-Chul (Hepce Chem Co., Ltd.)
Choi, Keun-Bae (Hepce Chem Co., Ltd.)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.12, no.2, 2009 , pp. 228-235 More about this Journal
Abstract
We synthesized glycidyl azide monomer(GAM) as a monomer for polymerization of glycidy azide polymer(GAP) which is a promising energetic prepolymer for a plastic-bonded explosive. Using quantitative real-tim in-situ infrared(in-situ IR) spectroscopy, kinetic study on the cationic ring opening polymerization of GAM was carried out. The reaction rate was obtained from monitoring the change of ether C-O stretching band($1050cm^{-1}$) in series IR spectra. The reaction was in accordance with the first-order reaction law for each of reaction temperature at 100/1 mole ratio of [GAM]/[$BF_3*etherate$]. In the ring opening polymerization of GAM, with ratio of [GAM]/[$BF_3*etherate$] to equal 100/1 at various temperature, the activation parameters obtained from the evaluation of kinetic data were ${\Delta}H^*$=14.34kcal/mol, ${\Delta}S^*=-12.31cal/mol{\cdot}K$ and $E_a$=14.89kcal/mol.
Keywords
Glycidyl Azide Monomer; Glycidyl Azide Polymer(GAP); Kinetics; Cationic Polymerization; Real-Time In-situ IR Spectroscopy; Energetic Prepolymer;
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