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<p>Polyvinyl alcohol (PVA)/polyethylene oxide (PEO)/polyacrylamide (PAM) polymer blends (PPP polymer blends) based on external laser irradiation and lithium perchlorate incorporation is an emerging approach for future improvement of different optoelectronic devices. Li<sup>+</sup> /PPP polymer blends were prepared by casting technique. (PPP pure/Laser) blends revealed higher degree of crystallinity compared to others, as indicated in XRD results. Complexations between Li<sup>+</sup> ions and the PPP polymer blends matrix were evaluated through Fourier Transform Infrared (FTIR) technique. Tomographic analysis by Atomic Force Microscope (AFM) showed an increase in the average roughness from 0.21&#xa0;μm to 0.26&#xa0;μm. Scanning Electron Microscopy (SEM) images indicated a high degree of miscibility between the three polymers. UV-vis technique indicated the optical properties can be tailored by Li<sup>+</sup> content. Laser irradiated blends doped with Li<sup>+</sup> contents showed higher values of E<sub>g</sub> compared to (PPP Pure/Laser) ones which confirms the suppression effect of Li<sup>+</sup> ions. The association of PPP polymer blends under the thermal effect of laser has been indicated by Differential Scanning Calorimetry (DSC) technique. An increase in the glass transition temperature T<sub>g</sub> values from 185&#xa0;°C to 196&#xa0;°C under laser effect can be observed. Li<sup>+</sup> doped blends exposed to laser irradiation show weaker mechanical resistance than heattreated Li<sup>+</sup> doped blends due to the combined effects of laser irradiation and lithium ions. Obtained results indicated that our prepared Li<sup>+</sup> doped blends (heat and laser treated) are considered good candidates for material packaging and optoelectronics devices.</p>

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Synergistic Effects of Li+ Doping and Laser Irradiation on the Structural and Functional Properties of PVA/PEO/PAM Polymer Composites

  • 期刊论文

  • 发表日期：

    2026年6月24日

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  • Mohamed H. Abdel-Kader,
  • Tariq S. Alharby,
  • Saleh N. Alamri

摘要

Polyvinyl alcohol (PVA)/polyethylene oxide (PEO)/polyacrylamide (PAM) polymer blends (PPP polymer blends) based on external laser irradiation and lithium perchlorate incorporation is an emerging approach for future improvement of different optoelectronic devices. Li+ /PPP polymer blends were prepared by casting technique. (PPP pure/Laser) blends revealed higher degree of crystallinity compared to others, as indicated in XRD results. Complexations between Li+ ions and the PPP polymer blends matrix were evaluated through Fourier Transform Infrared (FTIR) technique. Tomographic analysis by Atomic Force Microscope (AFM) showed an increase in the average roughness from 0.21 μm to 0.26 μm. Scanning Electron Microscopy (SEM) images indicated a high degree of miscibility between the three polymers. UV-vis technique indicated the optical properties can be tailored by Li+ content. Laser irradiated blends doped with Li+ contents showed higher values of Eg compared to (PPP Pure/Laser) ones which confirms the suppression effect of Li+ ions. The association of PPP polymer blends under the thermal effect of laser has been indicated by Differential Scanning Calorimetry (DSC) technique. An increase in the glass transition temperature Tg values from 185 °C to 196 °C under laser effect can be observed. Li+ doped blends exposed to laser irradiation show weaker mechanical resistance than heattreated Li+ doped blends due to the combined effects of laser irradiation and lithium ions. Obtained results indicated that our prepared Li+ doped blends (heat and laser treated) are considered good candidates for material packaging and optoelectronics devices.