High-pressure homogenized citrus fiber cellulose dispersions

Structural characterization and flow behavior

Journal article (2021)

Authors

M. R. Serial Wageningen University & Research
E. Velichko RST/Neutron and Positron Methods in Materials - AS
T. Nikolaeva Wageningen University & Research
Ruud den Adel Unilever Food Innovation Centre
C. Terenzi Wageningen University & Research
W.G. Bouwman RST/Neutron and Positron Methods in Materials - AS
John van Duynhoven Wageningen University & Research, Unilever Food Innovation Centre
Research Group
RST/Neutron and Positron Methods in Materials (AS) (TU Delft)
Copyright: © 2021 M. R. Serial, E. Velichko, T. Nikolaeva, R. den Adel, C. Terenzi, W.G. Bouwman, J. P.M. van Duynhoven
DOI: https://doi.org/10.1016/j.foostr.2021.100237
More Info
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Published Date

2021

Language

English

Faculty

Applied Sciences

Department

RST/Radiation, Science and Technology

Research Group

RST/Neutron and Positron Methods in Materials

Abstract

Functionalized biomass waste sources of cellulose have drawn attention due to their high availability and sustainability properties. In this work we characterize the structural and flow properties of high-pressure homogenized citrus fiber cellulose dispersions, employing SAXS, rheology and rheo-MRI techniques. The high-pressure treatment disrupts the microfibrillar network within the citrus fibers, but leaves the individual microfibrils intact. Under moderate shear (0.1-100 s-1) in a confined (<1 mm) geometry, these functionalized citrus fiber cellulose dispersions exhibit thixotropic shear-banding behavior accompanied by cooperative flow of microfibril flocs with correlation lengths ξ ~ 100 μm. The presented findings form a basis towards understanding and manipulating the structural and rheological properties of non-wood biomass cellulose microfibrils under industrially-relevant conditions.