Selective Dinitramide Removal from Aqueous Solution by Crosslinked PolyDADMAC Gels,Propellants, Explosives, Pyrotechnics

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Selective Dinitramide Removal from Aqueous Solution by Crosslinked PolyDADMAC Gels
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2020-03-25 , DOI: 10.1002/prep.201900271
Hamza Turhan ₁ , Niyazi Bicak ₁

Affiliation

Crosslinked poly(diallyldimethylammonium chloride) (DADMAC) was demonstrated as selective conjugate for near quantitative adsorption of dinitramide anions from water in a wide pH range (1‐10) and efficient replacement takes place even at 1 : 1 DADMAC/dinitramide molar ratio with short contact time and low concentration. Adsorption was determined to be highly selective over nitrate and sulfate ions. Colorimetric determination of potassium dinitramide based on UV absorption at 284 nm revealed nearly 90 % exchange of chloride counter ions with dinitramide ions under optimum conditions. The effect of gel amount, pH and dinitramide concentration was analyzed. The structural and thermal characteristics of the gel were investigated by FTIR, SEM, DSC, and TGA. In addition, the regeneration and reuse properties of crosslinked polyDADMAC were also assessed.

中文翻译：

交联的PolyDADMAC凝胶从水溶液中选择性地乙酰胺去除

交联的聚二烯丙基二甲基氯化铵（DADMAC）被证明是在宽pH范围（1-10）中从水中几乎定量吸附二硝酰胺阴离子的选择性共轭物，即使在短的DADMAC /地氨酰胺摩尔比为1：1的情况下也能有效置换接触时间低，浓度低。确定吸附对硝酸根和硫酸根离子具有高度选择性。通过在284 nm处的紫外吸收比色法测定二硝酰胺钾，发现在最佳条件下氯代抗衡离子与二硝酰胺离子的交换率接近90％。分析了凝胶量，pH和二硝酰胺浓度的影响。通过FTIR，SEM，DSC和TGA研究了凝胶的结构和热特性。另外，还评估了交联的聚DADMAC的再生和再利用性能。

更新日期：2020-03-25

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