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首页> 外文期刊>Journal of Applied Polymer Science >Preparation of silicone containing 2,2,6,6-tetramethyl-4-piperidinol-based N-chloramine for antibacterial polyethylene via interpenetration in supercritical carbon dioxide
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Preparation of silicone containing 2,2,6,6-tetramethyl-4-piperidinol-based N-chloramine for antibacterial polyethylene via interpenetration in supercritical carbon dioxide

机译：通过在超临界二氧化碳中的间隔中，制备含有2,2,6,6-四甲基-4-哌啶基N-氯胺的抗菌聚乙烯的硅氧烷。

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摘要

Functionalization of polyethylene (PE) with powerful biocides through a friendly and efficient procedure is necessary to obtain extended applications. A novel CO2-philic 2,2,6,6-tetramethyl-4-piperidinol (TMP)-based N-chloramine silicone was synthesized via Pt-catalyzed silane alcoholysis between the Si Symbol of the Klingon Empire H of poly(methylhydrosiloxane) and O Symbol of the Klingon Empire H of TMP and followed by chlorination of amine N Symbol of the Klingon Empire H originating from TMP to N Symbol of the Klingon Empire Cl. The TMP-based N-chloramine silicone was interpenetrated into PE using supercritical carbon dioxide (scCO(2)) as working solvent. It was shown that the thickness of the TMP-based N-chloramine silicone layer on PE can be easily controlled by the interpenetration pressure, reaching a maximum value of 70 nm at 28 mp. The synthetic procedures and the interpenetration results were characterized by Fourier transform infrared, scanning electron microscopy, and X-ray photoelectron spectroscopy. In contrast with pristine PE that did not show biocidal ability, the TMP-based N-chloramine silicone modified PE imparted powerful antibacterial abilities, exerting total kills of both Staphylococcus aureus and Escherichia coli of similar to 10(7) cfu mL(-1) in 30 min. The biocidal functionality was durable toward washings, storage, and ultraviolet exposure and the recoverability of lost chlorines was good. The interpenetration in scCO(2) tactic provides an environmentally friendly and universal approach to functionalize inert substrates due to no needs of harmful solvent and chemical linkages with biocides. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47614.
机译：通过友好和有效的程序具有强大的杀生物剂的聚乙烯（PE）的官能化是获得扩展应用的必要条件。通过Pt催化的硅烷醇分解于聚（甲基氢硅氧烷）的Si符号与聚（甲基氢硅氧烷）和o Klingon帝国H的TMP的象征，然后是Klingon Empire H的胺的武器N符号，来自Klingon Empire Cl的N个象征。使用超临界二氧化碳（SCCO（2））作为工作溶剂，将基于TMP的N-氯胺硅氧烷渗入PE中。结果表明，PE上的基于TMP的N-氯胺硅树脂层的厚度可以通过互通压力容易地控制PE，达到28mP的最大值为70nm。通过傅里叶变换红外，扫描电子显微镜和X射线光电子能谱表征了合成程序和互通结果。与未显示杀生物能力的原始PE相比，基于TMP的N-氯胺硅氧烷改性体重赋予强大的抗菌能力，施加总杀死金黄色葡萄球菌和大肠杆菌的总杀死与10（7）CFU mL（-1）相似的大肠杆菌在30分钟内。杀杀菌功能持久，耐洗，储存和紫外线暴露，氯对氯的可回收性很好。 SCCO（2）策略中的互通提供了一种环保和普遍的方法，其由于不需要对杀生物剂的有害溶剂和化学键的需求而挥霍底物。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47614。

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