聚碘树脂平均聚合度对其缓释性、稳定性和杀菌性能的影响

发布时间：2019-07-30 11:17

【摘要】：研究平均聚合度对聚碘树脂缓释浓度、稳定性和杀菌能力的影响,这对于聚碘树脂在饮用水消毒中的应用具有重要的指导作用。本研究以平均聚合度不同的聚碘树脂为研究体系;通过UV/Vis法测定了其不同时间的缓释浓度;通过加速试验法,测定其贮存稳定性;采用热重法测定其热稳定性;提出了改进的烧瓶振荡法与悬液定量法相结合来评价微溶出性聚碘树脂消毒剂的杀菌效果,讨论了其杀菌机理。结果表明:随着平均聚合度的增大,缓释浓度和杀菌率均增大,而贮存稳定性和热稳定性降低。此外,聚碘树脂在溶液中的杀菌机理是通过缓释液中的碘单质和聚碘树脂与细菌的接触两种方式来杀菌的;其中,三碘树脂主要是通过接触的方式杀菌,而其它聚碘树脂是通过2种方式的共同作用来杀菌。
[Abstract]:The effect of the average degree of polymerization on the sustained-release concentration, stability and sterilization ability of the polyiodine resin was studied, which was of great significance to the application of the polyiodine resin in the disinfection of drinking water. In this study, a polyiodine resin with different average degree of polymerization was used as the research system, and the sustained-release concentration of different time was determined by UV/ Vis method. The storage stability was determined by the accelerated test method, and the thermal stability was determined by the method of thermogravimetry. A modified flask shaking method and a suspension quantitative method were put forward to evaluate the germicidal efficacy of microdissolution polyiodine resin disinfectant, and its sterilization mechanism was discussed. The results showed that with the increase of the average degree of polymerization, the sustained-release concentration and the sterilization rate increased, while the storage stability and the thermal stability decreased. In addition, the sterilization mechanism of the polyiodine resin in the solution is that the iodine simple substance in the sustained-release liquid and the contact of the polyiodine resin and the bacteria are carried out in two ways, wherein the triiodoresin is mainly sterilized by contact, and the other polyiodine resin is sterilized by the mutual action of two ways.
【作者单位】：太原理工大学化学化工学院;
【基金】：太原市2012年科学技术发展计划大学生创新创业项目(120164004)
【分类号】：R187

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