00000nam 2200000zi 4500 9.934539 CaOODSP 20250428151831 m o d f cr |n||||||||| 240227e199102uuqucd ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn--- DR52-9/11-1991E-PDF Ahad, E., author. Synthesis and characterization of branched glycidyl azide polymer / by E. Ahad. Québec, Canada : Defence Research Establishment [Valcartier] = Centre de recherches pour la défense Valcartier : February/février 1991 1 online resource (vii, 29 pages) : charts text txt rdacontent computer c rdamedia online resource cr rdacarrier DREV report = CRDV rapport ; 4634/91 Cover title. Digitized edition from print [produced by Defence Research and Development Canada]. Includes bibliographical references (page 26-27). "Hydroxy-terminated aliphatic polyethers having alkyl azide substituents, such as Glycidyl Azide Polymer (GAP), are useful as energetic binders in rocket propellants with reduced smoke and low vulnerability as well as in insensitive plastic bonded explosives. A novel one-step degradation process was developed for the preparation of branched GAP by reacting a solid rubbery polyepichlorohydrin (PECH) of high molecular weight (MW approximately equals to E6) with the epichlorohydrin (ECH) monomer and sodium azide in a suitable organic solvent at 100C for less than 15 h without a catalyst. The MW of the branched product can be controlled and predetermined in the MW range 500-40,000 by adjusting the weight ratio (ECH/PECH) in the reaction mixture. Branched GAP was characterized using different techniques such as low-angle laser light scattering (LALLS), gel permeation chromatography (GPC), viscometry, membrane osometry, differential scanning calorimetry and bomb calorimetry. [...]"--abstract (page i). Includes abstract in French. Polymer engineering Canada. Rockets (Aeronautics) Fuel Analysis. Génie des polymères Canada. Fusées (Aéronautique) Combustibles Analyse. Technical reports lcgft Rapports techniques rvmgf Defence Research Establishment Valcartier, issuing body. CRDV rapport. 4634/91. (CaOODSP)9.934167 PDF 1010 KB https://publications.gc.ca/collections/collection_2024/rddc-drdc/DR52-9-11-1991-eng.pdf DREV R-4634/91 ; CRDV R-4634/91