Synthesis and Characterization of Novel Azido Polymers: Hyperbranched Poly-3-azidomethyl-3-hydroxymethyl Oxetane.

In the past thirty years, azido polymers have attracted wide attention in the field of energetic materials. Currently, the synthesized azido polymers have linear structure. In the present research, hyperbranched poly-3-azidomethyl-3- oxetane (HBPAMHMO) was synthesized using an AB₂ monomer, and its physical and chemical properties were studied. The results showed that the molecular weight of HBPAMHMO increased along with the increasing ratio of r ([monomer]₀/[initiator]₀), together with very narrow PDI (from 1.12 to 1.34), and moreover, the degree of branching increased along with the increase in polymerization temperature. As compared to linear azido polymer with similar structure, it has lower glass transition temperature, sensitivity, higher combustion heat and mechanical properties, suggesting a great prospect for numerous applications. [ABSTRACT FROM AUTHOR]