Surface integration of polyelectrolyte and zeolitic imidazolate framework-67 for multifunctional poly (lactic acid) non-woven fabrics
作者：Xingguo Wang, Chang Liu, Dan Meng, Jun Sun, Bin Fei, Hongfei Li, Xiaoyu Gu, Sheng Zhang
關(guān)鍵字：聚電解質(zhì)和ZIFs的表面整合阻燃多功能化PLA無紡布
論文來源：期刊
具體來源：Applied Surface Science
發(fā)表時間：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.
生態(tài)友好的生物基聚乳酸（PLA）無紡布（NFs）具有替代石油基織物的巨大潛力，而目前制備多功能PLA NFs的注意力仍然很少。在此，PLA非織造布通過聚電解質(zhì)（APTris）浸軋工藝進行表面處理，然后用沸石咪唑酯骨架-67（ZIF-67）進行原位生長，以提高阻燃、抗菌和抗紫外線（UV）性能。特性。PLA/APTris/ZIF67 織物樣品的可燃性表征表明，極限氧指數(shù)值從 18.1% 增加到 27.5%。APTris/ZIF67的引入使樣品的損傷面積、放熱率和放熱率峰值分別降低了83.0%、33.1%和26.4%。表明APTris和ZIF-67協(xié)同促進致密炭層的形成，通過吸附和催化作用抑制火焰蔓延并減少煙霧釋放。此外，處理過的無紡布樣品表現(xiàn)出抗紫外線性能和對革蘭氏陽性金黃色葡萄球菌（S. aureus）和革蘭氏陰性大腸桿菌（E.coli）的特異性抗菌作用。這種結(jié)合 APTris 和 ZIF-67 的獨特表面改性為制造多功能 PLA 無紡布提供了新的機會。處理過的無紡布樣品表現(xiàn)出抗紫外線特性和對革蘭氏陽性金黃色葡萄球菌（S. aureus）和革蘭氏陰性大腸桿菌（E.coli）的特異性抗菌作用。這種結(jié)合 APTris 和 ZIF-67 的獨特表面改性為制造多功能 PLA 無紡布提供了新的機會。處理過的無紡布樣品表現(xiàn)出抗紫外線特性和對革蘭氏陽性金黃色葡萄球菌（S. aureus）和革蘭氏陰性大腸桿菌（E.coli）的特異性抗菌作用。這種結(jié)合 APTris 和 ZIF-67 的獨特表面改性為制造多功能 PLA 無紡布提供了新的機會。
https://doi.org/10.1016/j.apsusc.2021.151039