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

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

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.

Original languageEnglish
Title of host publicationNondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVIII
EditorsAndrew L. Gyekenyesi, Peter J. Shull, H. Felix Wu, Tzuyang Yu
PublisherSPIE
ISBN (Electronic)9781510672062
DOIs
StatePublished - 2024
EventNondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVIII 2024 - Long Beach, United States
Duration: Mar 25 2024Mar 27 2024

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12950
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceNondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVIII 2024
Country/TerritoryUnited States
CityLong Beach
Period03/25/2403/27/24

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