Enhancing electromechanical properties of a lignin-based multifunctional composite through chemical reactive blending with functionalized carbon nanotubes

Nihal Kanbargi; Sargun Singh Rohewal; Yawei Gao; Logan Kearney; Jan Michael Carrillo; Christopher Bowland; Amit Naskar; Sumit Gupta

doi:10.1117/12.3012176

9 May 2024 Enhancing electromechanical properties of a lignin-based multifunctional composite through chemical reactive blending with functionalized carbon nanotubes

Nihal Kanbargi, Sargun Singh Rohewal, Yawei Gao, Logan Kearney, Jan Michael Carrillo, Christopher Bowland, Amit Naskar, Sumit Gupta

Author Affiliations +

Proceedings Volume 12950, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVIII; 1295005 (2024) https://doi.org/10.1117/12.3012176
Event: SPIE Smart Structures + Nondestructive Evaluation, 2024, Long Beach, California, United States

Abstract

Electrical conductivity in nanocomposites is a complex phenomenon governed by a myriad number of physical and chemical factors. However, the interrelationships between segmental dynamics and its effect on electrical conductivity is less understood. Herein we create a solvent free nanocomposite synthesized in a single step process. Facile covalent bonding is achieved between functionalized nanotubes and the lignin-based matrix using small molecule coupling agents. The covalent bonding and shearing are hypothesized to lead to a breaking of the larger agglomerates, leading to excellent dispersion and thereby percolation at much lower concentrations than can be achieved by traditional blending. We show that while the above process can be utilized to achieve excellent dispersion and thus percolation and conductivity, segmental dynamics also plays a key role in dictating electrical conductivity.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Nihal Kanbargi, Sargun Singh Rohewal, Yawei Gao, Logan Kearney, Jan Michael Carrillo, Christopher Bowland, Amit Naskar, and Sumit Gupta "Enhancing electromechanical properties of a lignin-based multifunctional composite through chemical reactive blending with functionalized carbon nanotubes", Proc. SPIE 12950, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVIII, 1295005 (9 May 2024); https://doi.org/10.1117/12.3012176

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