使用结合聚合物网络直接检测RDX蒸汽
Deepti Gopalakrishnan1, William R Dichtel
1Baker Laboratory, Department of Chemistry and Chemical Biology, Cornell University , Ithaca, New York 14853-1301, United States.
Journal of the American Chemical Society
|May 7, 2013
概括
一个新的聚合物网络通过光火检测到微量含有1,3,5-trinitroperhydro-1,3,5-triazine (RDX) 爆炸物的微量. 这一突破使RDX在蒸汽或溶液中的独立检测成为可能,这对于安全应用至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
- 聚合物科学 聚合物科学
背景情况:
- 1,3,5-Trinitroperhydro-1,3,5-triazine (RDX) 是爆炸物的关键组成部分,这给安全带来了重大挑战.
- 目前RDX的检测方法是有限的,特别是由于其低波动性而远程,独立采样.
- 现有的光灭技术可以有效检测1,3,5-三二 (TNT),但不能检测RDX.
研究的目的:
- 开发一种RDX的敏感检测方法,与独立采样兼容.
- 调查结合聚合物网络在RDX蒸汽检测方面的潜力.
- 评估聚合物对RDX和其他爆炸性化合物的选择性和反应.
主要方法:
- 一个交叉链接的烯烯聚合物网络的合成.
- 聚合物暴露于溶液和蒸汽阶段的RDX,TNT和PETN.
- 测量聚合物光火作为分析剂存在的指标.
- 测试聚合物对非爆炸性挥发性化合物和降解的RDX的反应.
主要成果:
- 开发的聚合物网络在暴露于溶液或蒸汽中的微量RDX时表现出显著的光火.
- 聚合物的光火反应保持不变,尽管减少了,部分降解了RDX,表明了特异性.
- 聚合物网络还检测到1,3,5-三二 (TNT) 和五乙四酸 (PETN).
- 该聚合物没有表现出常见溶剂,挥发性胺或个人护理产品蒸汽的光火.
结论:
- 交叉链接的烯烯聚合物网络是用于敏感,独立检测RDX的有希望的材料.
- 这种聚合物为检测低挥发性爆炸物提供了潜在的解决方案,增强了安全措施.
- 这些发现鼓励进一步研究高分子网络和用于先进爆炸物传感应用的框架材料.
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