TY - JOUR
T1 - Glass nanofibers as a reinforcement agent to polylactic acid smart plastic window
AU - Khalaf, Mai M.
AU - Gouda, Mohamed
AU - Abou Taleb, Manal F.
AU - Abd El-Lateef, Hany M.
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2024/2/1
Y1 - 2024/2/1
N2 - Polylactic acid (PLA) was roughened with electrospun glass nanofibers (EGNF; 50–250 nm) as a reinforcement agent to create afterglow and photochromic smart windows, and anti-counterfeiting patterns. Luminescent transparent film was prepared by physical immobilization of lanthanide aluminate nanoparticles (LAN) into EGNF@PLA composites. Transmission electron microscopy (TEM) was utilized to inspect the morphology of LAN (5–15 nm). After experimenting with CIE Lab and luminescence spectrum measurements, we found that the EGNF@PLA samples changed color from colorless to green upon exspoure to ultraviolet (UV) lightening. Using various analytical methods, the morphology and chemical compositions of luminous EGNF@PLA hybrids were explored. When raising the LAN content in EGNF@PLA, the resistance to scratches was observed to considerably improve. When stimulated at 365 nm, the emission spectra displayed two emission bands at 436 nm and 517 nm. Photochromism was rapidly reversed in EGNF@PLA with low LAN contents to designate fluorescence emission, whereas EGNF@PLA with higher LAN concentrations exhibited sustained luminosity to designate afterglow emission. Light-emitting colorless EGNF@PLA hybrids were found to exhibit improved superhydrophobic and UV-blocking properties.
AB - Polylactic acid (PLA) was roughened with electrospun glass nanofibers (EGNF; 50–250 nm) as a reinforcement agent to create afterglow and photochromic smart windows, and anti-counterfeiting patterns. Luminescent transparent film was prepared by physical immobilization of lanthanide aluminate nanoparticles (LAN) into EGNF@PLA composites. Transmission electron microscopy (TEM) was utilized to inspect the morphology of LAN (5–15 nm). After experimenting with CIE Lab and luminescence spectrum measurements, we found that the EGNF@PLA samples changed color from colorless to green upon exspoure to ultraviolet (UV) lightening. Using various analytical methods, the morphology and chemical compositions of luminous EGNF@PLA hybrids were explored. When raising the LAN content in EGNF@PLA, the resistance to scratches was observed to considerably improve. When stimulated at 365 nm, the emission spectra displayed two emission bands at 436 nm and 517 nm. Photochromism was rapidly reversed in EGNF@PLA with low LAN contents to designate fluorescence emission, whereas EGNF@PLA with higher LAN concentrations exhibited sustained luminosity to designate afterglow emission. Light-emitting colorless EGNF@PLA hybrids were found to exhibit improved superhydrophobic and UV-blocking properties.
KW - Afterglow emission
KW - Fluorescent photochromism
KW - Lanthanides
KW - Polylactic acid
KW - Reinforcing glass nanofibers
UR - http://www.scopus.com/inward/record.url?scp=85177191918&partnerID=8YFLogxK
U2 - 10.1016/j.jphotochem.2023.115344
DO - 10.1016/j.jphotochem.2023.115344
M3 - Article
AN - SCOPUS:85177191918
SN - 1010-6030
VL - 448
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
M1 - 115344
ER -