Advanced Nanocomposite Polymers for Electrical/Functional Applications

Event Date: April 14, 2011
Speaker: Franklin Jaramillo Isaza, Eng., Ph.D.
Speaker Affiliation: Center for Research Innovation and Development of Materials;
University of Antioquia, Columbia
Sponsor: Nanotechnology Seminar Series
Time: 10:30 AM
Location: BRK, Room 2001
Contact Name: J.P. Allain
Contact Phone: (765) 496-9718
Contact Email: allain@purdue.edu
Open To: ACCEPTABLE FOR ECE 694A

 

Nanocomposite based on conducting polymers/nanoparticles are useful materials in a wide number of technological applications. Incorporation of nano-metallic oxides into polymers offers important changes in the electronic, optical, thermal, mechanical properties. In the present study films and bulk polypyrrole and polyaniline were obtained in the presence of iron oxide nanoparticles. Also it is showed how synthetic iron oxide nanoparticles can be doped to tune the electronic energy levels. The effect of the nanoparticles on the structure of the polymer matrix is determined using Raman and Mossbauer spectroscopy and electrochemical techniques. The results show that the magnetite incorporation decreases polymeric film resistance and Raman experiments have evidenced that the incorporation of nanoparticles into polymeric matrix not only stabilizes its polaronic form, but also preserves the polymer from further oxidation.