writer：Xingguo Wang, Chang Liu, Dan Meng, Jun Sun, Bin Fei, Hongfei Li, Xiaoyu Gu, Sheng Zhang
keywords：聚电解质和ZIFs的表面整合阻燃多功能化PLA无纺布
source：期刊
specific source：Applied Surface Science
Issue time：2021年

  Eco-friendly bio-based poly (lactic acid) (PLA) non-woven fabrics (NFs) presents great potential to replace petroleum-based fabrics, whereas the attention for preparing multifunctional PLA NFs is still scarce at present. Herein, PLA non-woven fabrics were surface treated by a padding process with polyelectrolyte (APTris) followed by an in-situ growth with zeolitic imidazolate framework-67 (ZIF-67) to improve the flame retardant, antibacterial and ultraviolet (UV) resistant properties. The flammability characterization of the PLA/APTris/ZIF67 fabric sample indicated that the limited oxygen index value was increased to 27.5% from 18.1%. The introduction of APTris/ZIF67 significantly decreased the damaged area, heat release rate, and peak heat release rate of the sample by 83.0%, 33.1%, and 26.4% respectively. It was suggested that APTris and ZIF-67 synergistically promoted the formation of dense char layers, which inhibited the flame spread and reduced the smoke release by adsorption and catalysis effects. Besides, the treated non-woven samples exhibited UV resistant properties and specific antibacterial actions against gram-positive Staphylococcus aureus (S. aureus) and gram-negative Escherichia coli (E. coli). This unique surface modification with the combination of APTris and ZIF-67 provides a new opportunity for manufacturing multifunctional PLA non-woven fabrics.

  生态友好的生物基聚乳酸（PLA）无纺布（NFs）具有替代石油基织物的巨大潜力，而目前制备多功能PLA NFs的注意力仍然很少。在此，PLA非织造布通过聚电解质（APTris）浸轧工艺进行表面处理，然后用沸石咪唑酯骨架-67（ZIF-67）进行原位生长，以提高阻燃、抗菌和抗紫外线（UV）性能。特性。PLA/APTris/ZIF67 织物样品的可燃性表征表明，极限氧指数值从 18.1% 增加到 27.5%。APTris/ZIF67的引入使样品的损伤面积、放热率和放热率峰值分别降低了83.0%、33.1%和26.4%。表明APTris和ZIF-67协同促进致密炭层的形成，通过吸附和催化作用抑制火焰蔓延并减少烟雾释放。此外，处理过的无纺布样品表现出抗紫外线性能和对革兰氏阳性金黄色葡萄球菌（S. aureus）和革兰氏阴性大肠杆菌（E.coli）的特异性抗菌作用。这种结合 APTris 和 ZIF-67 的独特表面改性为制造多功能 PLA 无纺布提供了新的机会。处理过的无纺布样品表现出抗紫外线特性和对革兰氏阳性金黄色葡萄球菌（S. aureus）和革兰氏阴性大肠杆菌（E.coli）的特异性抗菌作用。这种结合 APTris 和 ZIF-67 的独特表面改性为制造多功能 PLA 无纺布提供了新的机会。处理过的无纺布样品表现出抗紫外线特性和对革兰氏阳性金黄色葡萄球菌（S. aureus）和革兰氏阴性大肠杆菌（E.coli）的特异性抗菌作用。这种结合 APTris 和 ZIF-67 的独特表面改性为制造多功能 PLA 无纺布提供了新的机会。

https://doi.org/10.1016/j.apsusc.2021.151039