Co-exfoliation and fabrication of graphene based microfibrillated cellulose composites-mechanical and thermal stability and functional conductive properties

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@article{56518a0d0b2747ea93ebdc41bcfa4791,
title = "Co-exfoliation and fabrication of graphene based microfibrillated cellulose composites-mechanical and thermal stability and functional conductive properties",
abstract = "The excellent functional properties of graphene and micro-nanofibrillated cellulose (MNFC) offer plenty of possibilities for wide ranging applications in combination as a composite material. In this study, flexible graphene/microfibrillated cellulose (MFC) composite films were prepared by a simple method of co-exfoliation of graphite in an MFC suspension by high-shear exfoliation. We show that pristine graphene, without any chemical treatment, was homogeneously dispersed in the MFC matrix, and the produced composites showed enhanced thermal, electrical and mechanical properties compared to a non-co-exfoliated control. The film properties were studied by XPS, XRD, Raman, SEM, FTIR, TGA, nitrogen sorption, UV-vis spectroscopy, optical and formation analysis tests. At 0.5 wt{\%} loading, the specific surface area of graphene/MFC composites increased from 218 to 273 m2 g-1 while the tensile strength and Young's modulus for the graphene/MFC composites increased by 33{\%} and 28{\%} respectively. Thermal stability was enhanced by 22{\%} at 9 wt{\%} loading and the composites showed a high electrical conductivity of 2.4 S m-1. This simple method for the fabrication of graphene/MFC composites with enhanced controlled functional properties can prove to be industrially beneficial, and is expected to open up a new route for novel potential applications of materials based largely on renewable resources.",
author = "Josphat Phiri and Johansson, {Leena Sisko} and Patrick Gane and Maloney, {Thad C.}",
year = "2018",
month = "5",
day = "28",
doi = "10.1039/c8nr02052c",
language = "English",
volume = "10",
pages = "9569--9582",
journal = "Nanoscale",
issn = "2040-3364",
publisher = "The Royal Society of Chemistry",
number = "20",

}

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TY - JOUR

T1 - Co-exfoliation and fabrication of graphene based microfibrillated cellulose composites-mechanical and thermal stability and functional conductive properties

AU - Phiri, Josphat

AU - Johansson, Leena Sisko

AU - Gane, Patrick

AU - Maloney, Thad C.

PY - 2018/5/28

Y1 - 2018/5/28

N2 - The excellent functional properties of graphene and micro-nanofibrillated cellulose (MNFC) offer plenty of possibilities for wide ranging applications in combination as a composite material. In this study, flexible graphene/microfibrillated cellulose (MFC) composite films were prepared by a simple method of co-exfoliation of graphite in an MFC suspension by high-shear exfoliation. We show that pristine graphene, without any chemical treatment, was homogeneously dispersed in the MFC matrix, and the produced composites showed enhanced thermal, electrical and mechanical properties compared to a non-co-exfoliated control. The film properties were studied by XPS, XRD, Raman, SEM, FTIR, TGA, nitrogen sorption, UV-vis spectroscopy, optical and formation analysis tests. At 0.5 wt% loading, the specific surface area of graphene/MFC composites increased from 218 to 273 m2 g-1 while the tensile strength and Young's modulus for the graphene/MFC composites increased by 33% and 28% respectively. Thermal stability was enhanced by 22% at 9 wt% loading and the composites showed a high electrical conductivity of 2.4 S m-1. This simple method for the fabrication of graphene/MFC composites with enhanced controlled functional properties can prove to be industrially beneficial, and is expected to open up a new route for novel potential applications of materials based largely on renewable resources.

AB - The excellent functional properties of graphene and micro-nanofibrillated cellulose (MNFC) offer plenty of possibilities for wide ranging applications in combination as a composite material. In this study, flexible graphene/microfibrillated cellulose (MFC) composite films were prepared by a simple method of co-exfoliation of graphite in an MFC suspension by high-shear exfoliation. We show that pristine graphene, without any chemical treatment, was homogeneously dispersed in the MFC matrix, and the produced composites showed enhanced thermal, electrical and mechanical properties compared to a non-co-exfoliated control. The film properties were studied by XPS, XRD, Raman, SEM, FTIR, TGA, nitrogen sorption, UV-vis spectroscopy, optical and formation analysis tests. At 0.5 wt% loading, the specific surface area of graphene/MFC composites increased from 218 to 273 m2 g-1 while the tensile strength and Young's modulus for the graphene/MFC composites increased by 33% and 28% respectively. Thermal stability was enhanced by 22% at 9 wt% loading and the composites showed a high electrical conductivity of 2.4 S m-1. This simple method for the fabrication of graphene/MFC composites with enhanced controlled functional properties can prove to be industrially beneficial, and is expected to open up a new route for novel potential applications of materials based largely on renewable resources.

UR - http://www.scopus.com/inward/record.url?scp=85047415557&partnerID=8YFLogxK

U2 - 10.1039/c8nr02052c

DO - 10.1039/c8nr02052c

M3 - Article

VL - 10

SP - 9569

EP - 9582

JO - Nanoscale

JF - Nanoscale

SN - 2040-3364

IS - 20

ER -

ID: 21780100