A new azide polymerpoly(azidoethyl acrylate) was synthesized with acrylic acid and 2-chloride ethanol as the raw materials through a three-step process involving esterification

radical polymerization

and azide reaction.The new substance can meet the requirements of insensitive and better compatibility in polymer bonded explosives and solid rocket propellant binder.The azidation rate was determined by elemental analysis

and poly(azidoethyl acrylate) with azidation rate of 98.67% was obtained under this reaction condition.The structure of the preparation product was characterized by FTIR

UV-Vis and 1H-NMR methods.The results of GPC declared the number-average molecular weight Mn=1.14105

molecular weight distribution index Mw/Mn=3.2

which implied the better mechanical properties and processability of preparation product.The glass-transition temperature of poly(azidoethyl acrylate) was evaluated by DSC method and the thermal stability was tested by DTA and TGA methods.The results indicated that poly(azidoethyl acrylate) showed a single glass-transition temperature at -11.77 ℃ and exhibited good resistance to thermal decomposition up to 220 ℃.Moreover

the compatibilities of poly(azidoethyl acrylate) with the energetic components of TNT-based melt cast explosives were studied by using the DTA method.The result indicated that poly(azidoethyl acrylate) can be safely used in melt cast explosives of TNT and HMX

just not suitable for RDX explosives.