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
關鍵字：聚電解質和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（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