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Structure and properties of thermomechanically processed chitosan/carboxymethyl cellulose/graphene oxide polyelectrolyte complexed bionanocomposites

Lookup NU author(s): Professor David XieORCiD

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Abstract

Bionanocomposites of chitosan and chitosan/carboxymethyl cellulose (CMC) polyelectrolyte complexed materials with graphene oxide (GO) or reduced graphene oxide (rGO) were prepared by thermomechanical processing with excellent levels of dispersion. While GO has a greater affinity with the chitosan polycation, rGO had a more pronounced effect on properties resulting in increased tensile strength, Shore D hardness, and thermal stability of both matrices. Although GO is more hydrophilic than rGO, the former increased more effectively the surface hydrophobicity of the biocomposites regardless of matrix type. GO and rGO changed the α-transition of the biocomposites in a similar manner. The electrochemical properties of the biocomposites were influenced by both nanofiller type and matrix. This research revealed that inclusion of 2D carbon nanomaterials can alter biopolymer interactions and that the phase structure of the biopolymer blend may play a more important role than nanofiller–matrix interactions in determining the overall properties of these bionanocomposites.

Publication metadata

Author(s): Chen P, Xie F, Tang F, McNally T

Publication type: Article

Publication status: Published

Journal: International Journal of Biological Macromolecules

Year: 2020

Volume: 158

Pages: 420-429

Print publication date: 01/09/2020

Online publication date: 03/05/2020

Acceptance date: 29/04/2020

Date deposited: 23/05/2023

ISSN (print): 0141-8130

ISSN (electronic): 1879-0003

Publisher: Elsevier

URL: https://doi.org/10.1016/j.ijbiomac.2020.04.259

DOI: 10.1016/j.ijbiomac.2020.04.259

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