Graphene-based nano-functional materials for surface modification of wheat straw to enhance the performance of bio-based polylactic acid composites

M. Chougan; S. H. Ghaffar; M. J. Al-Kheetan

doi:10.1016/j.mtsust.2022.100308

Graphene-based nano-functional materials for surface modification of wheat straw to enhance the performance of bio-based polylactic acid composites

M. Chougan, S. H. Ghaffar^*, M. J. Al-Kheetan

^*Corresponding author for this work

Civil Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

6 Downloads (Pure)

Abstract

To enhance wheat straw compatibility with the polylactic acid (PLA) matrix, several graphene-based materials (GBMs) derivatives, including graphene nanoplatelets, graphene oxide, and nano graphite particles with a constant fraction of 0.1 wt.-%, were employed for the surface functionalisation of wheat straw. Wheat straw surface quality was assessed by comparing PLA bio-based composites' mechanical and thermal performance with and without GBM surface functionalisation. All the resulting composites with surface functionalised straw particles exhibited higher thermal stability, flexural strength, tensile strength, and tensile toughness than those with pristine straw. This could be associated with the improved straw/PLA matrix interfacial bonding induced by the existence of GBMs on the surface of straw particles which was confirmed through morphology assessments. The mechanical properties investigations revealed maximum enhancements of 27%, 66%, and 322% for flexural strength, tensile strength, and tensile toughness, respectively, for bio-based composites consisting of graphene oxide-functionalised straw particles compared to control samples.

Original language	English
Article number	100308
Number of pages	8
Journal	Materials Today Sustainability
Volume	21
Early online date	31 Dec 2022
DOIs	https://doi.org/10.1016/j.mtsust.2022.100308
Publication status	Published - Mar 2023

Bibliographical note

Funding Information:
This work was funded as part of the HP-CSB project, which has received funding from the Engineering and Physical Sciences Research Council with the following reference: EP/S026487/1. The authors acknowledge Nanesa S. r.l for graphene material supply.

Publisher Copyright:
© 2022

Keywords

Bio-based composites
Graphene-based materials
Pre-treatment
Surface functionalisation
Wheat straw

ASJC Scopus subject areas

General Chemistry
Renewable Energy, Sustainability and the Environment
General Materials Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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ChouganM2023GrapheneFinal published version, 2.39 MBLicence: Creative Commons: Attribution (CC BY)

Cite this

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abstract = "To enhance wheat straw compatibility with the polylactic acid (PLA) matrix, several graphene-based materials (GBMs) derivatives, including graphene nanoplatelets, graphene oxide, and nano graphite particles with a constant fraction of 0.1 wt.-%, were employed for the surface functionalisation of wheat straw. Wheat straw surface quality was assessed by comparing PLA bio-based composites' mechanical and thermal performance with and without GBM surface functionalisation. All the resulting composites with surface functionalised straw particles exhibited higher thermal stability, flexural strength, tensile strength, and tensile toughness than those with pristine straw. This could be associated with the improved straw/PLA matrix interfacial bonding induced by the existence of GBMs on the surface of straw particles which was confirmed through morphology assessments. The mechanical properties investigations revealed maximum enhancements of 27%, 66%, and 322% for flexural strength, tensile strength, and tensile toughness, respectively, for bio-based composites consisting of graphene oxide-functionalised straw particles compared to control samples.",

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note = "Funding Information: This work was funded as part of the HP-CSB project, which has received funding from the Engineering and Physical Sciences Research Council with the following reference: EP/S026487/1. The authors acknowledge Nanesa S. r.l for graphene material supply. Publisher Copyright: {\textcopyright} 2022",

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AU - Ghaffar, S. H.

AU - Al-Kheetan, M. J.

N1 - Funding Information: This work was funded as part of the HP-CSB project, which has received funding from the Engineering and Physical Sciences Research Council with the following reference: EP/S026487/1. The authors acknowledge Nanesa S. r.l for graphene material supply. Publisher Copyright: © 2022

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N2 - To enhance wheat straw compatibility with the polylactic acid (PLA) matrix, several graphene-based materials (GBMs) derivatives, including graphene nanoplatelets, graphene oxide, and nano graphite particles with a constant fraction of 0.1 wt.-%, were employed for the surface functionalisation of wheat straw. Wheat straw surface quality was assessed by comparing PLA bio-based composites' mechanical and thermal performance with and without GBM surface functionalisation. All the resulting composites with surface functionalised straw particles exhibited higher thermal stability, flexural strength, tensile strength, and tensile toughness than those with pristine straw. This could be associated with the improved straw/PLA matrix interfacial bonding induced by the existence of GBMs on the surface of straw particles which was confirmed through morphology assessments. The mechanical properties investigations revealed maximum enhancements of 27%, 66%, and 322% for flexural strength, tensile strength, and tensile toughness, respectively, for bio-based composites consisting of graphene oxide-functionalised straw particles compared to control samples.

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Graphene-based nano-functional materials for surface modification of wheat straw to enhance the performance of bio-based polylactic acid composites

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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