Characterising exfoliated few-layer graphene interactions in co-processed nanofibrillated cellulose suspension via water retention and dispersion rheology

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@article{f93bd46d76c743ebbae219388d8c7454,
title = "Characterising exfoliated few-layer graphene interactions in co-processed nanofibrillated cellulose suspension via water retention and dispersion rheology",
abstract = "Few-layer graphene has been produced by mechanical delamination of exfoliated and naturally obtained graphite in aqueous suspension using the dispersion and suspension properties of nanofibrillated cellulose (NFC). Various degrees of graphene platelet integrity were obtained depending upon the processing conditions and the optional adoption of surfactant to aid dispersion of the hydrophobic agglomerates of nanometre-thin carbon material. The presence of NFC in the suspension acts similarly to the presence of surfactant, increasing the hydrodynamic coupling between the particles and water as a function of processing time, regardless of the graphene-comprising source. By fitting the stress growth region in the stress-shear rate relation to a concatenated series of single exponential functions of shear rate, the power law exponent and suspension consistency parameters (n and k), within a shear rate-localised Herschel-Bulkley (HB) expression, provide a straightforward characteristic for monitoring the desired suspension coupling response, and hence a measure of product constancy.",
keywords = "Coprocessing graphite delamination in cellulose, Few-layer graphene, Graphene-cellulose-water interaction under flow, Micro/nanofibrillar cellulose, Power law shear response, Quality parameterisation",
author = "Katarina Dimi-Misic and Josphat Phiri and Kaarlo Nieminen and Thad Maloney and Patrick Gane",
year = "2019",
month = "3",
day = "1",
doi = "10.1016/j.mseb.2019.03.001",
language = "English",
volume = "242",
pages = "37--51",
journal = "MATERIALS SCIENCE AND ENGINEERING B: ADVANCED FUNCTIONAL SOLID-STATE MATERIALS",
issn = "1873-4944",
publisher = "Elsevier BV",

}

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TY - JOUR

T1 - Characterising exfoliated few-layer graphene interactions in co-processed nanofibrillated cellulose suspension via water retention and dispersion rheology

AU - Dimi-Misic, Katarina

AU - Phiri, Josphat

AU - Nieminen, Kaarlo

AU - Maloney, Thad

AU - Gane, Patrick

PY - 2019/3/1

Y1 - 2019/3/1

N2 - Few-layer graphene has been produced by mechanical delamination of exfoliated and naturally obtained graphite in aqueous suspension using the dispersion and suspension properties of nanofibrillated cellulose (NFC). Various degrees of graphene platelet integrity were obtained depending upon the processing conditions and the optional adoption of surfactant to aid dispersion of the hydrophobic agglomerates of nanometre-thin carbon material. The presence of NFC in the suspension acts similarly to the presence of surfactant, increasing the hydrodynamic coupling between the particles and water as a function of processing time, regardless of the graphene-comprising source. By fitting the stress growth region in the stress-shear rate relation to a concatenated series of single exponential functions of shear rate, the power law exponent and suspension consistency parameters (n and k), within a shear rate-localised Herschel-Bulkley (HB) expression, provide a straightforward characteristic for monitoring the desired suspension coupling response, and hence a measure of product constancy.

AB - Few-layer graphene has been produced by mechanical delamination of exfoliated and naturally obtained graphite in aqueous suspension using the dispersion and suspension properties of nanofibrillated cellulose (NFC). Various degrees of graphene platelet integrity were obtained depending upon the processing conditions and the optional adoption of surfactant to aid dispersion of the hydrophobic agglomerates of nanometre-thin carbon material. The presence of NFC in the suspension acts similarly to the presence of surfactant, increasing the hydrodynamic coupling between the particles and water as a function of processing time, regardless of the graphene-comprising source. By fitting the stress growth region in the stress-shear rate relation to a concatenated series of single exponential functions of shear rate, the power law exponent and suspension consistency parameters (n and k), within a shear rate-localised Herschel-Bulkley (HB) expression, provide a straightforward characteristic for monitoring the desired suspension coupling response, and hence a measure of product constancy.

KW - Coprocessing graphite delamination in cellulose

KW - Few-layer graphene

KW - Graphene-cellulose-water interaction under flow

KW - Micro/nanofibrillar cellulose

KW - Power law shear response

KW - Quality parameterisation

UR - http://www.scopus.com/inward/record.url?scp=85063038636&partnerID=8YFLogxK

U2 - 10.1016/j.mseb.2019.03.001

DO - 10.1016/j.mseb.2019.03.001

M3 - Article

VL - 242

SP - 37

EP - 51

JO - MATERIALS SCIENCE AND ENGINEERING B: ADVANCED FUNCTIONAL SOLID-STATE MATERIALS

JF - MATERIALS SCIENCE AND ENGINEERING B: ADVANCED FUNCTIONAL SOLID-STATE MATERIALS

SN - 1873-4944

ER -

ID: 32864634