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Synthesis and Characterization of Poly(glycidyl nitrate‐ block‐ caprolactone‐ block‐ glycidyl nitrate) (PGN‐PCL‐PGN) Tri‐Block Copolymer as a Novel Energetic Binder
Author(s) -
Abrishami Fatemeh,
Zohari Narges,
Zeynali Vida
Publication year - 2017
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.201700092
Subject(s) - copolymer , differential scanning calorimetry , polymer chemistry , gel permeation chromatography , materials science , polycaprolactone , monomer , polymerization , glass transition , caprolactone , thermogravimetric analysis , fourier transform infrared spectroscopy , thermal stability , polymer , chemistry , chemical engineering , organic chemistry , composite material , physics , engineering , thermodynamics
An energetic binder was synthesized through ring opening copolymerization of glycidyl nitrate (GLYN) with polycaprolactone (PCL) as a macroinitiator to form tri‐block copolymer PGN‐PCL‐PGN. Effect of monomer concentration, catalyst, reaction time and solvent was investigated in polymerization. Resulting tri‐block copolymer was characterized by Fourier transform infrared spectroscopy (FT‐IR), nuclear magnetic resonance spectroscopy (NMR), gel permeation chromatography (GPC), differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). The DSC result shows that glass transition temperature of tri‐block copolymer (T g =−56.2 °C) is lower than PGN (T g =−35 °C). In optimal condition, the M w of this polymer was obtained 2900 g/mol.