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Synthesis and Characterization of New PGN Based Reactive Oligomeric Plasticizers for Glycidyl Azide Polymer
Author(s) -
Bodaghi Asghar,
Shahidzadeh Mansour
Publication year - 2018
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201700219
Subject(s) - plasticizer , polymer chemistry , azide , polymerization , chemistry , monomer , glass transition , copolymer , alkyne , grafting , polymer , materials science , organic chemistry , catalysis
New heterobifunctional oligomeric energetic plasticizer with alkyne at one end and a hydroxyl group at the other end, was synthesized via ring opening polymerization of glycidyl nitrate monomer, propargyl alcohol as initiator and BF 3 as a catalyst. The terminal hydroxyl group of plasticizer capped with methoxy and acetyl groups to generate two other types of reactive plasticizer. The chemical structure of plasticizers has characterized by FT‐IR and 1 H NMR spectroscopy as well as DSC, and TGA methods. Also, plasticizers reactivity toward alkyne‐azide reaction, have evaluated through LUMO energy level calculation of reactive plasticizer that containing one and two repeating units in their structure. Moreover, the results show that grafting up to 10 % of the total amount of azide groups of GAP, reduces the viscosity and the glass transition temperature of GAP‐g‐PGN copolymer in comparison to glycidyl azide polymer.