Partially phosphorylated polyvinyl alcohol–aluminum phosphate (PPVA-AlPO4) nanocomposites were synthesized through continuous stirring and condensation at 80 ℃. The optical properties of all samples were examined using UV–visible and photoluminescence (PL) spectroscopy. The absorption peaks are blue-shifted with the addition of phosphate groups. The addition of phosphate produced a broad peak and increased the optical band gap to 5.75 eV in PPVA; however, the optical band gap was reduced after combination in PPVA-AlPO4 nanocomposite. The PPVA-AlPO4 nanocomposites produced a strong single peak at 208 nm with a 5.5 eV optical bandgap. The excitation at 250 nm of PL spectra shows the presence of characteristic peaks syndiotactic and isotactic configuration of the PPVA-AlPO4 nanocomposite. An intense broad PL band observed at 306–370 nm shows i-PPVA-AlPO4 configuration proves strong interaction of phosphate groups in the PPVA-AlPO4 nanocomposite.
The Optical Properties of Polyvinyl Alcohol (PVA), Phosphorylated Polyvinyl Alcohol (PPVA), and Phosphorylated Polyvinyl Alcohol—Aluminum Phosphate (PPVA-AlPO4) Nanocomposites: Effect of Phosphate Groups
Adv Struct Mater
2022-02-15
9 pages
Article/Chapter (Book)
Electronic Resource
English
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