Effect of Homogenization (Microfluidization) Process Parameters in
Mechanical Production of Micro- and Nanofibrillated Cellulose on its
Rheological and Morphological Properties
Hesam Taheri1, 2, 3, Pieter Samyn1, 2*
1
University of Freiburg, Freiburg Institute for Advanced Studies (FRIAS),
Faculty of Environment and Natural Resources, Chair for Bio-based Materials Engineering,
Habsburgerstrasse 49, 79104 Freiburg, Germany
2
Freiburg Materials Research Center, Stefan-Meier-Straße 21, 79104 Freiburg, Germany
3
University of Freiburg, Hermann Staudinger Graduate School, Hebelstraße 27, 79104 Freiburg, Germany
*Corresponding author: pieter.samyn@fobawi.uni-freiburg.de or pieter.samyn@outlook.be
Tel +49 761 203 97202 Fax +49 761 203 3675
Supplementary Information.
This file contains supplementary information with additional figures in support of the manuscript.
H. Taheri et al., Effect of Homogenization of MFC/NFC on its Rheological and Morphological Properties
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Supplementary Information S1.
H. Taheri et al., Effect of Homogenization of MFC/NFC on its Rheological and Morphological Properties
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Fig. SI1. Effect of gap distance on rheological behavior of MFC/NFC suspension (0.5 wt.-%) at
25°C: a) S2, b) S5, c) S8. The solid symbols are from ascending shear rate and the open symbols
are from descending shear rate.
H. Taheri et al., Effect of Homogenization of MFC/NFC on its Rheological and Morphological Properties
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Suppleentary Information S2.
S8
S2,S5
Intensity (a.u.)
H2
H2
S2,S5
S8
R
S8
H2
R
H2
R
S2,S5S8
S8
H2,S2,S5
R
S2,S5 S8
R
R
Wavenumber (cm-1)
Fig. SI2. a) Experimental Wide Angle X-ray Diffraction (WAXD) patterns of processed cellulose
fibers samples (H2, S2, S5, S8); b) Attenuated reflection Fourier-transform infrared spectroscopy
(ATR-FTIR).
H. Taheri et al., Effect of Homogenization of MFC/NFC on its Rheological and Morphological Properties
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Supplementary Information S3.
Fig. SI3. Shear rate versus viscosity plots of MFC/NFC suspensions (0.5 wt.-%) at 25°C: a) S1,
S2 and S3, b) S7, S8 and S9. The solid symbols are from ascending shear rate and the open
symbols are from descending shear rate.
H. Taheri et al., Effect of Homogenization of MFC/NFC on its Rheological and Morphological Properties
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Supplementary Information S4.
Fig. SI4. Creep and strain recovery test of MFC/NFC suspensions (0.5 wt.-%) processed within
homogenizer and 200 μm chambers; a) creep and strain recovery compliance versus time at stress
5 Pa, b) stress versus time, c) creep and strain recovery compliance versus time at stress 2 Pa.
Tests were done for t Creep = 300 s and strain recovery (zero stress) for t Recovery = 900 s at 25°C.
H. Taheri et al., Effect of Homogenization of MFC/NFC on its Rheological and Morphological Properties
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Supplementary Information S5.
Fig. SI5. a) Compliance versus time in a creep and strain recovery test described by the Burger’s
model, b) the series combination of Maxwell (the series combination of a spring and a dashpot)
and Kelvin-Voigt (the parallel combination of a spring and a dashpot) models representing the
Burger’s model.
H. Taheri et al., Effect of Homogenization of MFC/NFC on its Rheological and Morphological Properties
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