Cairo University

MTPR Journal

 

ELECTRICAL CONDUCTION MECHANISM AND OPTICAL PROPERTIES OF POLYVINYL ACETATE AND CELLULOSE ACETATE PROPIONATE BLENDS

& doi: https://doi.org/10.1142/9789814317511_0011
F. H. ABD EL-KADER, A. M. SHEHAP, A. F. BASHA and N. H. EL-FEWATY
Cairo University, Faculty of Science, Physics Department-Giza, Egypt

Vol./Issue: 11 , id: 314

Films of Polyvinyl acetate (PVAc), cellulose acetate propionate (CAP) homopolymers and their blends of compositions 0.85/0.15, 0.7/0.3, 0.5/0.5, 0.3/0.7 and 0.15/0.85 (wt/wt) were prepared to investigate the type of electrical conduction mechanism. The current-voltage characteristics have been studied under different conditions. Also, ultraviolet/visible spectra of all samples have been studied according to their different composition ratios. The conduction mechanisms at different temperatures and voltage ranges appear to be essentially a space charge limited current for the two individual polymers, while for the blend samples the predominance mechanism is Poole-Frenkel type. Ultraviolet/visible studies of the investigated samples showed that the blend sample of 0.5/0.5 (wt/wt) has the smallest absorption edge (4.58 eV) and highest band tail (0.61 eV). The composition blend sample 0.5/0.5 (wt/wt) has the most proper conduction and optical properties which has attractive attention in the view of its application in electronic and optical devices.