Fabrication of polymer nanocomposites based on CNTs in PDMS matrix

M. Imbaby, K. Gottschalk
Ulm University, DE

Keywords: carbon nanotubes, nanocomposite, PDMS, dispersant

Summary:

This research presents a new approach to fabricate polymer/carbon nanotubes (CNT) nanocomposites. Multiwall carbon nanotubes with 6-9 nm diameter and 1.5 um length is used. Polydimethysolixane (PDMS), Acetone, and Polyethylene oxide (PEO) are used as polymer matrix, solvent and dispersant, respectively. The research work is divided into two stages: dispersion of CNT and preparation of PDMS/CNT nanocomposite. A new method is used to disperse the carbon nanotubes into acetone with the help of PEO dispersant. The optimum dispersant to CNT weight ratio and sonication time for obtaining well dispersed CNT are obtained and found to be 1.0 and 4.5 hours, respectively. Nanocomposites containing 0.1, 0.5, 1.0 and 2.5% wt. of CNT in PDMS are produced. It is found that CNTs is homogenously distributed inside PDMS matrix. The research have been don at Ulm University, school of experimental physics,Germany.