Preparation of smart glue using strontium aluminate and polylactic acid oligomer grafted Arabic gum

[Display omitted] •Photochromic and photoluminescent colorless composite adhesive was prepared.•Polylactic acid grafted gum was integrated with lanthanide aluminate (5–11 nm).•Photochromic colorless adhesive changed color to green under UV lamp.•Emission ban was monitored at 518 nm upon excitation a...

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Bibliographic Details
Published in:Journal of photochemistry and photobiology. A, Chemistry. Chemistry., 2024-01, Vol.447, p.115193, Article 115193
Main Authors: El-Newehy, Mohamed H., Aldalbahi, Ali, Thamer, Badr M., Moydeen Abdul Hameed, Meera
Format: Article
Language:English
Subjects:
Arabic gum
Hydrophobicity
Photochromism
Photoluminescence
Polylactic acid
Smart glue
Strontium aluminate
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Summary:[Display omitted] •Photochromic and photoluminescent colorless composite adhesive was prepared.•Polylactic acid grafted gum was integrated with lanthanide aluminate (5–11 nm).•Photochromic colorless adhesive changed color to green under UV lamp.•Emission ban was monitored at 518 nm upon excitation at 365 nm.•Smart luminous adhesive provided high superhydrophobicity and photostability. An intelligent nanocomposite adhesive was developed to streamline the manufacturing process for long-lasting photoluminescent and hydrophobic consumer goods. The photoluminescent adhesive composite continued to emit light for up to 120 min after being exposed to darkness. Using lanthanide-activated strontium aluminate (LaSA) nanoparticles (NPs; 5–11 nm) homogeneously immobilized in the eco-friendly polylactic acid oligomer grafted Arabic gum (PLA/AG), a light-transmitting nanocomposite adhesive agent was created. The produced adhesives at various LaSA NPs concentrations exhibited excitation intensity at 365 nm and an emission wavelength at 518 nm. Afterglow phosphorescence or fluorescence was seen in the emission spectra, depending on the LaSA ratio. The photochromic effect was observed as the adhesive film switch color from translucent to green in the presence of ultraviolet light and greenish-yellow in the absence of light. The LaSA nanoparticles embedded in the polylactic acid oligomer grafted Arabic gum matrix improved the nanocomposite hydrophobicity and scratch resistance. Both of durability and photostability of the LaSA@PLA/AG nanocomposite were found to be exceptional. This work verified the viability of mass producing photoluminescent adhesive for a variety of smart uses such as smart windows, smart packaging, and safety directional signs in buildings.
ISSN:1010-6030
1873-2666
DOI:10.1016/j.jphotochem.2023.115193