Abstract
Hydrogel of single-walled carbon nanotubes and polyaniline has been used for thermopower engineering applications due to desirable thermal, electrical, and mechanical properties as well as tunable degradability. In this article, we fabricated nanoporous composite scaffolds from hydrogel of single-walled carbon nanotubes and polyaniline polymer using a standard in situ polymerization process. Our solution-based fabrication method prevented single-walled carbon nanotube aggregation which resulted in enhancing thermal, electrical, and mechanical properties with keeping optimum flexibility in the porous composite scaffold. We compared the mechanical, electrical, and thermal properties of nanoporous composites with different single-walled carbon nanotube loadings. The porous composite scaffold with a 25 wt% showed higher electrical conductivity, ultimate tensile strength, and tensile modulus. Lastly, our solution fabrication method prevents aggregation single-walled carbon nanotube and could help to build the thermoelectrical materials for flexible electronic applications.
Highlights
The rapidly increasing interests in flexible electronic devices and the wearable display industry have motivated the advancement of lightweight and inexpensive energy storage devices.[1,2,3,4,5] The nanocomposites of nanoparticles with conductive polymer matrix represent a unique system in which properties of its components partially or completely mix and can emerge with new material behavior
The fabrication method included four steps, that is, (1.) the preparation of single-walled carbon nanotube (SWCNT) gels followed by transferring gel into rectangular molds, (2.) aniline monomers infiltration, and (3.) in situ polymerization of PANI polymer within the SWCNT gel network followed by infiltration of Camphor sulfonic acid (CSA) doping, followed by (4.) drying composite at 60C
The composite scaffold at 25 wt% SWCNT loading showed higher tensile modulus, ultimate tensile strength (UTS), and higher stuffiness compared to the pristine PANI polymer due to the stronger interfacial interaction between polymer and nanotubes
Summary
The rapidly increasing interests in flexible electronic devices and the wearable display industry have motivated the advancement of lightweight and inexpensive energy storage devices.[1,2,3,4,5] The nanocomposites of nanoparticles with conductive polymer matrix represent a unique system in which properties of its components partially or completely mix and can emerge with new material behavior. The traditional nanocomposites are well-studied, the superposition of components of the composite play a very important role in holding the composites. The surface area comes to dominate as the filler shrinks in size and leads to the unique behavior of the porous nanocomposite scaffolds.
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