Exploration of thermal stability studies of MWCNT-conducting polymer based composites for heat sensing application
Author(s): Dr. Kamna Yadav
Abstract: Composites of multiwall carbon nanotubes (MWNTs), electrically conducting polymers like Polyaniline (PANI), and poly (3, 4-ethylenedioxythiophene)–polystyrene sulfonic acid (PEDOT: PSS) were prepared by following solution casting method. MWCNTs were functionalized with oxidative acid (5M HNO3) treatment schemes to improve the adhesion between the polymer and carbon nanotubes by a II-II stacking interaction. Structural and morphological characterization of composites has been carried out by means of Field emission scanning electron microscope (FESEM) and High resolution transmission electron microscope (HRTEM). A detailed temperature dependent resistance study of both the composites was performed to examine the thermal properties of both the composites. MWCNT-PEDOT: PSS composite was found to show improved thermal stability than MWCNT-PANI composite hence was expected as the better candidate for heat sensor applications. MWCNT-PEDOT: PSS composite was further evaluated for its heat sensing response and was found to show excellent response, less response and recovery time and good reproducibility up to 190 ºC where the polymer film without MWCNTs was found to show the same results up to 100 ºC only.
Dr. Kamna Yadav. Exploration of thermal stability studies of MWCNT-conducting polymer based composites for heat sensing application. Int J Adv Acad Stud 2021;3(3):223-228. DOI: 10.33545/27068919.2021.v3.i3c.767