Fabrication and characterization of poly(vinyl alcohol)—Glycerol—Spinel ferrites flexible membranes. Issue 24 (17th December 2019)

• Record Type: Journal Article
• Authors: Shaheen, Adel; Haija, Mohammad A.; Chamakh, Mariem; Assayed, Ghada A. I.; Banat, Fawzi; Ayesh, Ahmad I.
• Is Part Of: Journal of applied polymer science. Volume 137:Issue 24(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-12-17
• Subjects: composites -- nanoparticles -- nanowires and nanocrystals -- structure‐property relationships -- synthesis and processing techniques -- thermogravimetric analysis (TGA); Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.48821
• Languages: English
• ISSNs: 0021-8995

Abstract

ABSTRACT: Polymer membranes of ferrites nanoparticles, glycerol, and poly(vinyl alcohol) (PVA) were fabricated using a solution casting method. Spinel ferrites nanoparticles, CuFe2 O4 or ZnFe2 O4, and glycerol were used as dopants to control the membranes' electrical conductivity. The morphology, composition, and interaction between PVA and the dopants were investigated byscanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), differentialscanning calorimeter (DSC), and thermal gravimetric analysis (TGA). Electrical characterization of the membranes was conducted by impedance spectroscopy using frequencies between 1 and 10 6 Hz and variable temperatures. The results revealed a negative temperature coefficient of the resistance of the membranes. Additionally, membranes with ZnFe2 O4 nanoparticles exhibit higher electrical impedance than those with CuFe2 O4 nanoparticles. Therefore, electrical conductivity could be controlled using a suitable dopant's composition and concentration. The membranes presented in this study exhibit semiconducting properties, thus, they have potentials to be utilized in multiple applications including the flexible organic‐based device. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48821. Abstract :