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首页> 外文期刊>RSC Advances >Toward a detoxification fabric against nerve gas agents: guanidine-functionalized poly[2-(3-butenyl)-2-oxazoline]/Nylon-6,6 nanofibers
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Toward a detoxification fabric against nerve gas agents: guanidine-functionalized poly[2-(3-butenyl)-2-oxazoline]/Nylon-6,6 nanofibers

机译：针对神经毒气的排毒织物：胍官能化的聚[2-（3-丁烯基）-2-恶唑啉] /尼龙-6,6纳米纤维

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A novel guanidine-functionalized polymer, poly[2-(3-butenyl)-2-oxazoline] (PBuOxz), has been co-electrospun with Nylon-6,6 to form fibers that could be used for the decontamination of chemical warfare agents (CWAs). PBuOxz was obtained from the living cationic polymerization of 2-(3-butenyl)-2-oxazoline, which was synthesized starting from 4-pentenoic acid. This clickable PBuOxz polymer could be easily functionalized through the introduction of amine groups via thiol–ene click chemistry, followed by guanidinylation to form guanidine-functionalized PBuOxz (G-PBuOxz). The synthesized G-PBuOxz/Nylon-6,6 fibers are an active hydrolysis species for diisopropyl fluorophosphate (DFP), an organophosphate mimic of nerve agents. The decontamination efficiency for DFP could be as high as 100% under trace aqueous solution conditions using this G-PBuOxz/Nylon-6,6 fiber as the decontamination agent at the ratio of [guanidine]/[DFP] = 100/1 in 2 hours. The hydrolysis occurs via a general SN2 mechanism for this G-PBuOxz-based catalysis. Furthermore, the kinetics of decontamination were also investigated based on time and guanidine concentration. Hence, this G-PBuOxz/Nylon-6,6 fiber is effective as a hydrolyzing agent against toxic organophosphates, and thus exhibits potential as a material for protecting against chemical warfare agents.
机译：一种新型的胍官能化聚合物聚[2-（3-丁烯基）-2-恶唑啉]（PBuOxz）与尼龙-6,6共电纺丝，形成可用于化学战剂净化的纤维（CWA）。由2-（3-丁烯基）-2-恶唑啉的活性阳离子聚合获得PBuOxz，其是从4-戊烯酸开始合成的。这种可点击的PBuOxz聚合物可以通过硫醇-烯点击化学引入胺基，然后进行胍基化反应形成胍基官能化的PBuOxz（G-PBuOxz），很容易将其官能化。合成的G-PBuOxz / Nylon-6,6纤维是一种二氟磷酸二异丙酯（DFP）的活性水解物质，DFP是神经毒剂的有机磷酸盐模拟物。使用这种G-PBuOxz /尼龙-6,6纤维作为去污剂，在[水溶液] / [DFP] = 100/1 in 2的比例下，在痕量水溶液条件下，DFP的去污效率可以高达100％。小时。对于这种基于G-PBuOxz的催化作用，水解是通过一般的S N 2机制发生的。此外，还根据时间和胍浓度研究了去污动力学。因此，该G-PBuOxz /尼龙-6，6纤维有效地用作针对有毒有机磷酸盐的水解剂，并且因此具有作为用于防护化学战剂的材料的潜力。

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