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首页> 外文期刊>Journal of Applied Polymer Science >Preparation of biocidal 4-ethyl-4-(hydroxymethyl)oxazolidin-2-one-based N-halamine polysiloxane for impregnation of polypropylene in supercritical CO2
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Preparation of biocidal 4-ethyl-4-(hydroxymethyl)oxazolidin-2-one-based N-halamine polysiloxane for impregnation of polypropylene in supercritical CO2

机译：杀生物4-乙基-4-（羟甲基）恶唑烷蛋白-2-单卤氨酸聚硅氧烷的制备，用于浸渍超临界CO2中的聚丙烯

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A cyclic N-halamine precursor, 4-ethyl-4-(hydroxymethyl)oxazolidin-2-one (EHMO), was synthesized and attached to poly(methylhydrosiloxane) (PMHS) through silane alcoholysis between the OH of EHMO and SiH of PMHS. The alcoholysis product was chlorinated with tert-butyl hypochlorite to transfer the NH to NCl and obtain an EHMO-based N-halamine polysiloxane. The N-halamine polysiloxane was impregnated into inert polypropylene (PP) fibers and formed a 72 nm coating layer using supercritical carbon dioxide (scCO(2)) as solvent and swelling reagent at 28 MPa and 50 degrees C for biocidal application. The overall synthetic procedure and the impregnation process were characterized by FTIR, XPS, and SEM, respectively. The N-halamine polysiloxane layer on PP imparted potent antibacterial abilities against both Staphylococcus aureus and Escherichia coli while pristine ones did not exhibit noticeable killing activities. Stability tests showed that the N-halamine polysiloxane layer was resistant to washing cycles, storage, and UV irradiation and the rechlorination of lost chlorines was good. The strategy of using CO2-philic PMHS as carrier polymer and scCO(2) as working solvent for impregnation presents a general and friendly procedure to functionalize inert substrates without the need of chemical linkage and organic solvent. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46624.
机译：环状N-卤素前体，4-乙基-4-（羟甲基）恶唑烷蛋白-2-一（eHMO），通过硅烷醇解和PMHs的ohMHS之间的OH之间的硅烷醇分解。甲烷醇溶解并附于聚（甲基氢硅氧烷）（PMH）。将醇解产物用叔丁基次氯酸盐氯化，以将NH转移至Ncl并获得eHMO基N-卤素聚硅氧烷。将N-卤素聚硅氧烷浸渍到惰性聚丙烯（PP）纤维中，并使用超临界二氧化碳（SCCO）（SCCO（2））作为溶剂和溶胀试剂在28MPa和50℃下形成72nm涂层，用于杀生物应用。整体合成程序和浸渍过程分别是通过FTIR，XPS和SEM的特征。在PP上的N-卤素聚硅氧烷层赋予金黄色葡萄球菌和大肠杆菌的有效的抗菌能力，而原始的杀菌剂没有表现出显着的杀伤活动。稳定性试验表明，N-卤素聚硅氧烷层对洗涤循环，储存和紫外线照射，损失氯对氯源性良好。作为浸渍工作溶剂的使用CO2-菲氏体PMH作为载体聚合物和SCCO（2）的策略提出了一种通用和友好的方法，以在不需要化学键和有机溶剂的情况下官能化惰性基材。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018,135,46624。

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