Surface modification of polyacrylonitrile film by anchoring conductive polyaniline and determination of uricase adsorption capacity and activity

Bayramoglu G., METİN A. Ü., Arica M. Y.

APPLIED SURFACE SCIENCE, vol.256, no.22, pp.6710-6716, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 256 Issue: 22
  • Publication Date: 2010
  • Doi Number: 10.1016/j.apsusc.2010.04.077
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.6710-6716
  • Keywords: Conductive polymer, Polyaniline, Contact angle, Surface energy, Adsorption, Uricase, COVALENT IMMOBILIZATION, GLUCOSE-OXIDASE, ACID, BIOSENSOR, MEMBRANES, STABILITY, DISEASE, ENZYMES, SENSOR
  • Gazi University Affiliated: Yes


Polyacrylonitrile (PAN) films were modified with chemical polymerization of conductive polyaniline (PANI) in the presence of potassium dichromate as an oxidizing agent. The effect of aniline concentration on the grafting efficiency and on the electrical surface resistance of PAN and (PAN/PANI)-1-3 composite film was investigated. The surface resistances of the conductive composite films were found to be between 6.32 and 0.97 k Omega/cm. As the amount of grafted PANI increased on the PAN films, the electrical resistance of composite film decreased. The PAN/PANI composite films were also characterized using SEM and FTIR. The changes in the surface properties of the films were characterized by contact angle measurements. As expected, the PAN, PAN/PANI and PAN/PANI-uricase immobilized films, exhibited different contact angle values and surface free energy due to different interactive functional groups of the films.