Abstract:
Hydrogen peroxide (H2O2) is a highly effective decontaminant against chemical warfare agents (CWAs) when present both in a liquid and as a solid powder. For the latter, this can be in the form of H2O2 being complexed to a polymer, such as polyvinylpyrrolidone (PVP). While a H2O2-PVP complex is indeed effective at decontaminating CWAs, it is vulnerable to environmental conditions such as high relative humidities (RH), which can dissociate the H2O2 from the complex before it is given the opportunity to react with CWAs. In this paper, we demonstrate that the cross-linked version of PVP forms a highly stable complex with H2O2, which can withstand both high (40 °C) and low (-20 °C) temperatures as well as maintain stability at high RH up to 90% over several days. Collectively, this lays the framework for processing the H2O2-PVP complex in a variety of form factors that can maintain efficacy under a wide range of real-world environmental conditions.
摘要:
过氧化氢(H2O2)当存在于液体和固体粉末中时,是针对化学战剂(CWAs)的高效去污剂。对于后者,这可以是H2O2与聚合物络合的形式,例如聚乙烯吡咯烷酮(PVP)。虽然H2O2-PVP复合物在净化CWA方面确实有效,它容易受到高相对湿度(RH)等环境条件的影响,它可以在有机会与CWAs反应之前将H2O2从络合物中解离。在本文中,我们证明,PVP的交联版本与H2O2形成高度稳定的复合物,可以承受高(40°C)和低(-20°C)温度,并在高RH下保持稳定性高达90%几天。总的来说,这为以各种形式因素处理H2O2-PVP复合物奠定了框架,这些形式因素可以在广泛的现实环境条件下保持功效。