Abstract
Spectrophotometric, morphologic and dielectric properties of polyacrylonitrile (PAN) composite films in the presence of pyrrole derivatives were reported in this paper. The composite films were fabricated by oxidative polymerization of pyrrole (Py), N-methyl pyrrole (NMPy) and N-phenyl pyrrole (NPhPy) by cerium(IV) on polyacrylonitrile matrix. The effect of temperature on the dielectric properties was studied in the frequency range from 0.05 Hz up to 10 MHz and in the temperature range from 0 °C up to 250 °C. Conductivity was increased with temperature due to increase of the mobility of charge carriers in the composite films. By increasing the temperature, the dipoles become free and respond to the applied electric field in composite structure; thus, the polarization and dielectric constant increases. PNPhPy-PAN composite films exhibited the highest dielectric constant, AC conductivity and tan delta.
Original language | English |
---|---|
Pages (from-to) | 843-850 |
Number of pages | 8 |
Journal | Fibers and Polymers |
Volume | 11 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2010 |
Funding
This work was supported by the Scientific and Technological Research Council of Turkey (TÜBI·TAK) under project code 107T578.
Funders | Funder number |
---|---|
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu | 107T578 |
Keywords
- AC conductivity
- Conductive composite film
- Pyrrole derivatives
- Temperature dependence on dielectrics