Open Access

ARTICLE

Conductive Polymer Composites Synthesized from Diacetylene-Functionalized Linseed Oil and MWCNT: Gamma Irradiation and Organic Vapor Sensing

by

1 Laboratory of Research and Development of Advanced Materials, Faculty of Chemistry, UAEMex, Toluca, CP 50120, Mexico
2 Department of Radiation Chemistry and Radiochemistry, Nuclear Sciences Institute, National Autonomous University of Mexico, Circuito Exterior, Ciudad Universitaria, Mexico DF 04510, Mexico

*Corresponding author:

Journal of Renewable Materials 2017, 5(2), 132-144. https://doi.org/10.7569/JRM.2016.634138

Abstract

Epoxidized linseed oil (ELO) was synthesized and functionalized with propargylamine (PA) or 3-ethynylaniline (EA) and the products were crosslinked to obtain the diacetylene-functionalized epoxidized linseed oil polymers which were used as matrices in the preparation of the composites with multiwalled carbon nanotubes (MWCNTs). Electrical resistance at percentages between 4 and 20 wt/wt% of filler was measured and the percolation threshold was calculated, obtaining 1.2 and 1.7% for the composites with EA and PA respectively. Low critical concentration evidenced a good dispersion of the MWCNTs without necessity of any modification. The final products were used in the sensing of acetone, chloroform and ethanol. The electrical resistance changes were measured at different concentrations and the sensibility was calculated. In order to improve stability toward the vapors, composites were irradiated with gamma rays and new sensing was done and compared. The results showed differences in sensibility, selectivity and reproducibility.

---

Keywords

---