Synthesis, characterization, thermal stability and sensitivity properties of the new energetic polymer through the azidoacetylation of poly(vinyl alcohol)

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• 作者：Bo Jin^a ; ^{6070831@163.com} ; ^{jinbo@swust.edu.cn} ; Juan Shen^a ; Rufang Peng^a ; Yuanjie Shu^b ; Bisheng Tan^a ; Shijin Chu^a ; Haishan Dong^b
• 关键词：Polyvinyl acetate azide ; Sensitivity property ; Compatibility ; Energetic binder ; Melt cast explosive
• 刊名：Polymer Degradation and Stability
• 出版年：2012
• 期刊代码：85_01413910
• 类别：ms
• 出版时间：April, 2012
• 卷：97
• 期：4
• 页码：473-480
• 文件大小：910 K

摘要

A new energetic polymer, polyvinyl acetate azide (PVAA), was synthesized via a two-step process involving initial chloroacetylation and subsequent azidation of poly(vinyl alcohol) and was characterized by elemental analysis, UV-Vis, ATR-FTIR, ¹H and ¹³C NMR techniques. The glass-transition temperature of PVAA was evaluated by DSC method and the thermal stability of PVAA was tested by DTA and TGA methods. The results indicate that PVAA shows single glass-transition temperature at 24.60聽掳C and exhibits good resistance to thermal decomposition up to 200聽掳C. Moreover, the sensitivity properties of PVAA were measured with the national military standard methods and the compatibilities of PVAA with the energetic components of TNT-based melt cast explosives were studied by using the non-isothermal DSC method. The results indicate that PVAA is an insensitive energetic polymer and can be safely used in melt cast explosives.