Electrical and structural properties of polyaniline/cellulose triacetate blend films |
| |
Authors: | Sh M Ebrahim A B Kashyout M M Soliman |
| |
Affiliation: | (1) Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, 163 Horrya Avenue, El-Shatby, Alexandria, Egypt;(2) Institute of Advanced Technology and New Materials, Mubarak City for Scientific Research and Technology Applications, Borg El-Arab City, Alexandria, Egypt |
| |
Abstract: | Polyaniline (PANI) has been blended with cellulose triacetate (CTA) to obtain both good mechanical properties and good electrical
properties. The effects of PANI weight percentage on the optical, structural, morphological and electrical properties in the
blend films of polyaniline and cellulose triacetate (PANI/CTA) have been investigated. The phenomenon of percolation was observed
in these blend films. It is found that the electrical conductivity of the blend films increases with the increase of polyaniline
content up to a value of 10−4 S cm−1 at 84 weight percentage of PANI. The experimental percolation threshold of the dried blend films is obtained at 9.5 wt% of
polyaniline. The values of Mott’s temperature, density of states at the Fermi level N (E
f)], hopping distance (R
hop), and barrier height (W
hop) for PANI/CTA blend films are calculated. By applying Mott’s theory, it is found that the PANI/CTA blend films obey the three
dimensional variable range hopping mechanism. |
| |
Keywords: | Conducting polymers Polyaniline Cellulose triacetate Blend hopping mechanism |
本文献已被 SpringerLink 等数据库收录! |
|