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首页> 外文期刊>Journal of Applied Polymer Science >Antimicrobial Polyethylene Terephthalate (PET) Treated with an Aromatic N-Halamine Precursor, m-Aramid
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Antimicrobial Polyethylene Terephthalate (PET) Treated with an Aromatic N-Halamine Precursor, m-Aramid

机译：用芳族N-哈拉明前体m-芳族聚酰胺处理的抗菌聚对苯二甲酸乙二酯（PET）

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摘要

A commercial m-aramid as N-halamine precursor has been coated onto polyethylene terephthalate (PET) fabric surface by pad-dry-curing process. The process is accomplished by padding the scoured PET fabric through the homogeneous m-aramid solution, drying at 150 degrees C for 3 min, and curing at 230 degrees C for 3 min. The PET surface coated with m-aramid was characterized using fourier transform infrared-attenuated total reflection (FTIR-ATR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). FTIR exhibits new bands in the 1645 and 1524 cm(-1) regions as characteristic of m-aramid bands, which indicate the PET fabric coated with m-aramid. XPS results show a distinguishable peak at binding energy 398.7 eV, which confirms the nitrogen atom of m-aramid on the PET surface. In addition, SEM image shows a layer of coating onto the PET surfaces, which demonstrates the presence of m-aramid coating on the surface of the PET. After exposure to dilute sodium hypochlorite solution, exhibition of antimicrobial activity on the coated PET is attributed to the conversion of N-halamine moieties from the N-halamine precursor. The chlorinated PET showed high antimicrobial activity against Gram-negative and Gram-positive bacteria. The chlorinated PET coated with 10% m-aramid exhibited about 6 log reductions of S. aureus and E. coli O157:H7 at a contact time of 10 and 30 min, respectively. Furthermore, the antimicrobial activity was durable and rechargeable after 25 wash cycles.
机译：通过垫干固化工艺将作为N-卤胺前体的商业间芳族聚酰胺涂布到聚对苯二甲酸乙二醇酯（PET）织物表面上。通过将煮过的PET织物浸入均匀的间位芳族聚酰胺溶液中，在150摄氏度下干燥3分钟，然后在230摄氏度下固化3分钟，即可完成该过程。使用傅里叶变换红外衰减全反射（FTIR-ATR）光谱，X射线光电子能谱（XPS）和扫描电子显微镜（SEM）对涂有间位芳族聚酰胺的PET表面进行表征。 FTIR在1645和1524 cm（-1）区域显示出新的条带，这是间位芳族聚酰胺带的特征，这表明涂有间位芳族聚酰胺的PET织物。 XPS结果显示在结合能398.7 eV处有一个明显的峰，这证实了PET表面上间位芳族聚酰胺的氮原子。另外，SEM图像显示在PET表面上的涂层，这表明在PET表面上存在间位芳族聚酰胺涂层。暴露于稀的次氯酸钠溶液后，在涂层的PET上表现出的抗菌活性归因于N-卤胺部分从N-卤胺前体的转化。氯化PET对革兰氏阴性和革兰氏阳性细菌显示出很高的抗菌活性。涂有10％间位芳族聚酰胺的氯化PET在接触时间分别为10和30分钟时，金黄色葡萄球菌和大肠杆菌O157：H7的还原量约为6 log。此外，抗微生物活性是持久的，并且在25次洗涤循环后可再充电。

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