Polymeric decontaminant 2 (N,N‐dichloropolystyrene sulfonamide): Synthesis, characterization, and efficacy against simulant of sulfur mustard

Abstract

A polymeric decontaminant N,N-dichloropolystyrene sulfonamide was synthesized by different steps from starting material polystyrene and followed by sulfonation, chlorosulfonation, and amidification. Halogeno-sulfonamide was obtained by treatment of sodium hypochlorite with sulfonamide resin. It was characterized by FTIR, solubility, viscosity, DSC, and TGA techniques. Efficiency of this polymer as decontaminant was evaluated by reaction with 2-chloro ethyl phenyl sulfide, a simulant of sulfur mustard (SM) at room temperature. This decontamination reaction was monitored by gas chromatography (GC) and products were identified by gas chromatography-mass spectrometry (GC-MS). The positive chlorine content of this polymer was checked by standard iodometry titration. The synthesized positive chlorine compound is observed to be a promising decontaminant against simulant of sulfur mustard, chiefly in the situation where use of aqueous medium such as acetonitrile : water (2 : 1) is precluded.

Investigation on Decontaminating Efficiency of N,N-Dichloropolystyrene Sulfonamide Nanofibers against Pathogenic Bacteria of Human Body Flora

“…Then 11 mL concentrated sulfuric acid were added at 50 ºC into the flask of reaction mixture and stirred for 2 h in this condition. Accomplishing the reaction, brown sulfonated polystyrene was obtained 5,6 . Chlorinating the produced sulfonyl polystyrene, 2 g of sulfonated polystyrene was mixed with 20 mL of POCl3 and refluxed for 4-6 h. After completion of the reaction, POCl3 were distilled in vacuum.…”

“…Finally, obtained sulfonyl chloride polystyrene was washed with methanol. A brownish powder was remained as product of this phase 6 .…”

“…At the next phase, 2 g of sulfonyl chloride polystyrene was refluxed with 30 mL concentrated ammonia for 4-6 h in order to produce yellow powder, which was polystyrene sulfonamide. Following mixing 2 g of polystyrene sulfonamides with sodium hypochlorite solution (which was acidified by acetic acid) for 2-4 h at 5 ºC resulted in formation of N,Ndichloro polystyrene sulfonamide 6 .…”

Application of Gas Chromatography in Monitoring of Organic and Decontamination Reactions

“…Detoxification (Gutch, P. 2008) of the chemical warfare agent (CWA), sulfur mustard is one of the primary goals to get rid of its toxic effects. An efficient and operationally simple method is developed for chemical decontamination of sulfur mustard.…”

Redox polymer with N,N‐dichlorosulfonamide functional groups as arsenite oxidant in aqueous solutions

“…In the method proposed in the present article the oxidation of As(III) has been extended to the use of a polymer having N,N ‐dichlorosulfonamide groups (abbreviated as R/Cl 2 ), which consists of a styrene‐divinylbenzene macroporous matrix with attached functional groups containing two chlorine atoms with oxidation number +1. Owing to its oxidative properties the polymer has been used as a biocide for water disinfection, in some organic synthesis applications and as a decontaminant of chemical warfare agents . Our investigations have been devoted to the synthesis of this polymer and its application in the removal of some toxic inorganic admixtures (cyanide, thiocyanate, sulfide, nitrite), through their transformation into environmentally safe substances (i.e., oxidation of sulfide to sulfate), from waters …”