Abstract
Thermal sensitivity (TS) and stability of polyvinyl nitrate (PVN), as an energetic polymer with different nitrogen contents, were investigated. For preparation of the samples of PVNs through nitration of polyvinyl alcohol, two types of technical and laboratory polyvinyl alcohols were used with the molecular weights of 45,000 and 60,000 g mol−1, respectively. Among different samples of PVNs containing 12.95–15.63 % of nitrogen, TS and stability of PVNs with high and moderate nitrogen contents have been determined. The chemical structure and thermal behaviors of PVNs were determined by CHNS analyzer, FT-IR spectra, TS, gel permission chromatography, thermogravimetric analysis, derivative thermogravimetry, differential scanning calorimetry, and scanning electron microscope. It was found that the sample with higher nitrogen content shows lower and higher thermal stability and TS value, respectively.
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