Influence of shear rheometer measurement systems on the rheological properties of microfibrillated cellulose (MFC) suspensions

Research output: Contribution to journalArticleScientificpeer-review

Standard

Influence of shear rheometer measurement systems on the rheological properties of microfibrillated cellulose (MFC) suspensions. / Schenker, Michel; Schoelkopf, Joachim; Gane, Patrick; Mangin, Patrice.

In: Cellulose, Vol. 25, No. 1, 2018, p. 961–976.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

APA

Vancouver

Author

Schenker, Michel ; Schoelkopf, Joachim ; Gane, Patrick ; Mangin, Patrice. / Influence of shear rheometer measurement systems on the rheological properties of microfibrillated cellulose (MFC) suspensions. In: Cellulose. 2018 ; Vol. 25, No. 1. pp. 961–976.

Bibtex - Download

@article{56f8f4bc406343248ba273e2265259e7,
title = "Influence of shear rheometer measurement systems on the rheological properties of microfibrillated cellulose (MFC) suspensions",
abstract = "Flow curve and viscoelastic measurements were performed on microfibrillated cellulose (MFC) suspensions of different solids content using both cylinder and cup (smooth and rough) as well as vane in cup geometries. To compare the data quantitatively from amplitude sweep measurements and dynamic flow curves several descriptors were newly introduced to parameterize the observed two-zone behaviour separated by a transition region. It was observed that the cylinder cup geometries are prone to erroneous effects like slip, wall depletion and/or shear banding. However, those effects were not observed when the MFC suspension was not stressed beyond the dynamic critical stress (yield) point, i.e. when still in the linear viscoelastic regime. The vane in cup system on the other hand, seems to be less affected by flow inhomogeneities. By following the rheological properties as a function of the MFC suspension solids content, it could be shown that the global property trends remained alike for all investigated measurement systems, despite the presence of erroneous effects in some geometries. The observed effects were linked to recent model hypotheses in respect to the morphology of MFC suspensions under changing shear situations.",
keywords = "Depletion layer, Flow curve, Microfibrillated cellulose (MFC), Rheology, Vane, Viscoelasticity",
author = "Michel Schenker and Joachim Schoelkopf and Patrick Gane and Patrice Mangin",
year = "2018",
doi = "10.1007/s10570-017-1642-x",
language = "English",
volume = "25",
pages = "961–976",
journal = "Cellulose",
issn = "0969-0239",
number = "1",

}

RIS - Download

TY - JOUR

T1 - Influence of shear rheometer measurement systems on the rheological properties of microfibrillated cellulose (MFC) suspensions

AU - Schenker, Michel

AU - Schoelkopf, Joachim

AU - Gane, Patrick

AU - Mangin, Patrice

PY - 2018

Y1 - 2018

N2 - Flow curve and viscoelastic measurements were performed on microfibrillated cellulose (MFC) suspensions of different solids content using both cylinder and cup (smooth and rough) as well as vane in cup geometries. To compare the data quantitatively from amplitude sweep measurements and dynamic flow curves several descriptors were newly introduced to parameterize the observed two-zone behaviour separated by a transition region. It was observed that the cylinder cup geometries are prone to erroneous effects like slip, wall depletion and/or shear banding. However, those effects were not observed when the MFC suspension was not stressed beyond the dynamic critical stress (yield) point, i.e. when still in the linear viscoelastic regime. The vane in cup system on the other hand, seems to be less affected by flow inhomogeneities. By following the rheological properties as a function of the MFC suspension solids content, it could be shown that the global property trends remained alike for all investigated measurement systems, despite the presence of erroneous effects in some geometries. The observed effects were linked to recent model hypotheses in respect to the morphology of MFC suspensions under changing shear situations.

AB - Flow curve and viscoelastic measurements were performed on microfibrillated cellulose (MFC) suspensions of different solids content using both cylinder and cup (smooth and rough) as well as vane in cup geometries. To compare the data quantitatively from amplitude sweep measurements and dynamic flow curves several descriptors were newly introduced to parameterize the observed two-zone behaviour separated by a transition region. It was observed that the cylinder cup geometries are prone to erroneous effects like slip, wall depletion and/or shear banding. However, those effects were not observed when the MFC suspension was not stressed beyond the dynamic critical stress (yield) point, i.e. when still in the linear viscoelastic regime. The vane in cup system on the other hand, seems to be less affected by flow inhomogeneities. By following the rheological properties as a function of the MFC suspension solids content, it could be shown that the global property trends remained alike for all investigated measurement systems, despite the presence of erroneous effects in some geometries. The observed effects were linked to recent model hypotheses in respect to the morphology of MFC suspensions under changing shear situations.

KW - Depletion layer

KW - Flow curve

KW - Microfibrillated cellulose (MFC)

KW - Rheology

KW - Vane

KW - Viscoelasticity

UR - http://www.scopus.com/inward/record.url?scp=85039721138&partnerID=8YFLogxK

U2 - 10.1007/s10570-017-1642-x

DO - 10.1007/s10570-017-1642-x

M3 - Article

VL - 25

SP - 961

EP - 976

JO - Cellulose

JF - Cellulose

SN - 0969-0239

IS - 1

ER -

ID: 17022157