A Hierarchical Approach for Creating Electrically Conductive Network Structure in Polyurethane Nanocomposites using a Hybrid of Graphene Nanoplatelets, Carbon Black and Multi-Walled Carbon Nanotubes

Authors

Pashupati Pokharel, University of New Haven
Dequan Xiao, University of New HavenFollow
Folarin Erogbogbo, San Jose State University
Ozgur Keles, San Jose State University
Dai Soo Lee, Chonbuk National University

Author URLs

Professor Xiao's Faculty Profile

Document Type

Article

Publication Date

10-2017

Subject: LCSH

Nanostructures, Polymers

Disciplines

Chemical Engineering | Chemistry

Abstract

Hierarchical organization of carbon nanomaterials is the best strategy to combine desirable factors and synergistically impart mechanical and electrical properties to polymers. Here, we investigate the relaxation behavior of carbon nanofillers filled polyurethane (PU) with special reference to particle size and aspect ratio, filler morphology, filler loading to understand the conductive network formation of fillers in the PU matrix. Typically, an addition of 2 wt% hybrid fillers of graphene nanoplatelets (GNPs), conductive carbon black (CB) and multiwalled carbon nanotubes (MWCNTs) in PU at 1:1:2 mass ratio (GCM112-PU2) showed lowest surface resistivity ~10^6.8 ohm/sq along with highest improved mechanical properties.

Our results demonstrate how hierarchical compositions may function in polymer configurations that are useful for thermal and electrical systems.

Comments

This is the authors' accepted manuscript of the article published in Composites Part B. The version of record can be found at https://doi.org/10.1016/j.compositesb.2018.10.057.

DOI

10.1016/j.compositesb.2018.10.057

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.

Repository Citation

Pokharel, Pashupati; Xiao, Dequan; Erogbogbo, Folarin; Keles, Ozgur; and Lee, Dai Soo, "A Hierarchical Approach for Creating Electrically Conductive Network Structure in Polyurethane Nanocomposites using a Hybrid of Graphene Nanoplatelets, Carbon Black and Multi-Walled Carbon Nanotubes" (2017). Chemistry and Chemical Engineering Faculty Publications. 30.
https://digitalcommons.newhaven.edu/chemicalengineering-facpubs/30

Publisher Citation

Pokharel P, Xiao D, Erogbogbo F, Keles O, Lee DS, A hierarchical approach for creating electrically conductive network structure in polyurethane nanocomposites using a hybrid of graphene nanoplatelets, carbon black and multi-walled carbon nanotubes, Composites Part B (2018), doi: https://doi.org/10.1016/j.compositesb.2018.10.057.