Synthesis, characterization, and thermal stability properties of PVTNP-co-PVAA through the azidoacetylation of polyvinyl 2,4,6-trinitrophenylacetal

• Published in: Macromolecular research 2014, 22(2), , pp.117-123
• Main Authors: Jin, Bo, Shen, Juan, Peng, Rufang, Shu, Yuanjie, Chu, Shijin, Dong, Haishan
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Complex Fluids and Microfluidics; Nanochemistry; Nanotechnology; Physical Chemistry; Polymer Sciences; Soft and Granular Matter; 고분자공학
• ISSN: 1598-5032; 2092-7673
• DOI: 10.1007/s13233-014-2028-7

A new energetic polymer, poly(vinyl 2,4,6-trinitrophenylacetal)- co -poly(vinyl acetate azide) (PVTNP- co -PVAA), was synthesized by a two-step process involving initial chloroacetylation and subsequent azidation of poly(vinyl 2,4,6-trinitrophenylaceta). The synthesized polymers were characterized by elemental analysis, UV-Vis, ATR-FTIR, and 1 H NMR techniques. The glass-transition temperature of PVTNP- co -PVAA was evaluated by differential scanning calorimetry (DSC), and the thermal stability of PVTNP- co -PVAA was tested by differential thermal analysis (DTA) and thermogravimetric analysis (TGA). DSC traces showed that PVTNP- co -PVAA had two glass-transition temperatures at −27.53 and 67.05 °C, respectively. DTA and TGA curves showed that the thermo-oxidative degradation of PVTNP- co -PVAA in air was a two-step reaction, and the percentage of degraded PVTNP- co -PVAA reached nearly 100% at 600 °C.