TY - JOUR
T1 - Surface integration of polyelectrolyte and zeolitic imidazolate framework-67 for multifunctional poly (lactic acid) non-woven fabrics
AU - Wang, Xingguo
AU - Liu, Chang
AU - Meng, Dan
AU - Sun, Jun
AU - Fei, Bin
AU - Li, Hongfei
AU - Gu, Xiaoyu
AU - Zhang, Sheng
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China (grant numbers 21875015 and 51803007 ) and the Society of Hong Kong Scholars ( XJ2018002 ).
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/12/15
Y1 - 2021/12/15
N2 - 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.
AB - 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.
KW - Antibacterial
KW - Flame retardancy
KW - PLA non-woven fabrics
KW - UV protection
KW - ZIF-67
UR - http://www.scopus.com/inward/record.url?scp=85113662157&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2021.151039
DO - 10.1016/j.apsusc.2021.151039
M3 - Review article
AN - SCOPUS:85113662157
SN - 0169-4332
VL - 569
JO - Applied Surface Science
JF - Applied Surface Science
M1 - 151039
ER -