Optical, and electrical conductivity properties of ZnO and TiO2 nanoparticles scattered in PEO-PVA for electrical devices

被引:28
作者
El-Morsy, M. A. [1 ,2 ]
Awwad, Nasser S. [3 ]
Ibrahium, Hala A. [4 ]
Farea, M. O. [5 ]
机构
[1] Prince Sattam Bin Abdulaziz Univ, Coll Sci & Humanities Al Kharj, Phys Dept, Plasma Technol & Mat Sci Unit, Al Kharj 11942, Saudi Arabia
[2] Univ Damietta, Fac Sci, Phys Dept, New Damietta 34517, Egypt
[3] King Khalid Univ, Coll Sci, Dept Chem, POB 9004, Abha 61413, Saudi Arabia
[4] King Khalid Univ, Coll Sci, Dept Biol, POB 9004, Abha 61413, Saudi Arabia
[5] Mansoura Univ, Fac Sci, Dept Phys, Mansoura 35516, Egypt
关键词
PVA; PEO; ZnO; TiO; 2; NPs; AC conductivity; BROMIDE;
D O I
10.1016/j.rinp.2023.106592
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Polyvinyl alcohol (PVA)/Polyethylene oxide (PEO) has been blended and doped with zinc oxide and titanium oxide nanoparticles. Different concentration of the prepared ZnO and TiO2 NPs make a change in PVA/PEOZnO/TiO2 NPs nanocomposites films improve the characterization of PVA/PEO. XRD scans show two broad peaks at about 18.8 degrees and 21.95 degrees for PVA/PEO blend. XRD scans show of PVA/PEO- ZnO/TiO2 NPs nanocomposites films obtain the hexagonal structure of ZnO and the anatase phase of TiO2 NPs. The addition of dopants in the PVA/PEO blend results in a reduce in degree of crystallinity compared to the pure blend. This is evident from the decrease in the crystallinity index (Xc value) from 37.25 to 22.31. This reduction in crystallinity can have implications for the material's opticla, thermal, and electrical properties, and should be considered when evaluating its suitability for specific applications. FT-IR results show changes in intensity of bands that could be assigned to the strong interaction between PVA/PEO and ZnO/TiO2 nanoparticles. The Egopt values reduced by raising laser ablation time due to unstructured defects that enhanced the density of localized states in the band gap, dropping from 4.72 eV to 3.0 eV for direct transitions and from 3.05 eV to 2.35 eV for indirect transitions. It undergoes complete decomposition at a higher temperature, resulting in a mass percentage of 45 & PLUSMN; 0.3 wt%. In comparison, the pure polymer blend sample has a lower mass percentage of 33 & PLUSMN; 0.03 wt% during the same temperature range. The fabricated system of PVA/PEO- ZnO/TiO2 NPs nanocomposites films showing improved in AC conductivity and dielectric characteristics and could be suggested in electrical applications.
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页数:7
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