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Mandin S, Metilli L, Karrouch M, Blésès D, Lancelon-Pin C, Sailler P, Chèvremont W, Paineau E, Putaux JL, Hengl N, Jean B, Pignon F. Multiscale study of the chiral self-assembly of cellulose nanocrystals during the frontal ultrafiltration process. NANOSCALE 2024; 16:19100-19115. [PMID: 39320948 DOI: 10.1039/d4nr02840f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2024]
Abstract
The structural organization of cellulose nanocrystal (CNC) suspensions at the membrane surface during frontal ultrafiltration has been characterized, for the first time, at the nano- and microscale by in situ small-angle X-ray and light scattering (SAXS and SALS, respectively). During filtration, the particles assembled at the membrane surface and formed the so-called concentration polarization layer (CPL), which contains CNCs arranged in a chiral nematic (cholesteric) helicoidal structure, with the long axis of the CNCs oriented parallel to the membrane surface, and the helical axis of the cholesteric structure oriented perpendicular to the membrane surface. The self-organization of CNCs in the form of oriented cholesteric structures was further characterized by a pitch gradient in the CPL. The structure of the CPL was also investigated upon release of the transmembrane pressure. SAXS data revealed a relaxation process associated with a diffusion of the CNCs from the membrane surface towards the bulk, while SALS measurements revealed a re-organization of the cholesteric phase that was preserved all along the deposit. The preservation of the observed structure after 14 days of continuous filtration followed by air-drying was confirmed using scanning electron microscopy and wide-angle X-ray diffraction, demonstrating the feasibility of the process scale-up.
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Affiliation(s)
- Samuel Mandin
- Univ. Grenoble Alpes, CNRS, Grenoble INP (Institute of Engineering Univ. Grenoble Alpes), LRP, F-38000 Grenoble, France.
| | - Lorenzo Metilli
- Univ. Grenoble Alpes, CNRS, CERMAV, F-38000 Grenoble, France
| | - Mohamed Karrouch
- Univ. Grenoble Alpes, CNRS, Grenoble INP (Institute of Engineering Univ. Grenoble Alpes), LRP, F-38000 Grenoble, France.
| | - Didier Blésès
- Univ. Grenoble Alpes, CNRS, Grenoble INP (Institute of Engineering Univ. Grenoble Alpes), LRP, F-38000 Grenoble, France.
| | | | - Pierre Sailler
- Univ. Grenoble Alpes, CNRS, CERMAV, F-38000 Grenoble, France
| | - William Chèvremont
- ESRF, The European Synchrotron, CS 40220, F-38043 Grenoble, Cedex 9, France
| | - Erwan Paineau
- Université Paris Saclay, CNRS, Laboratoire de Physique des Solides, 1 rue Nicolas Appert, Orsay 91405, France
| | - Jean-Luc Putaux
- Univ. Grenoble Alpes, CNRS, CERMAV, F-38000 Grenoble, France
| | - Nicolas Hengl
- Univ. Grenoble Alpes, CNRS, Grenoble INP (Institute of Engineering Univ. Grenoble Alpes), LRP, F-38000 Grenoble, France.
| | - Bruno Jean
- Univ. Grenoble Alpes, CNRS, CERMAV, F-38000 Grenoble, France
| | - Frédéric Pignon
- Univ. Grenoble Alpes, CNRS, Grenoble INP (Institute of Engineering Univ. Grenoble Alpes), LRP, F-38000 Grenoble, France.
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Synergistic effect of particle size, shear rate and driving-force during microfiltration of fruit juices: Toward a relevant choice of pretreatments and filtration conditions. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Staszak K, Wieszczycka K. Membrane applications in the food industry. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2021-0050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Abstract
Current trends in the food industry for the application of membrane techniques are presented. Industrial solutions as well as laboratory research, which can contribute to the improvement of membrane efficiency and performance in this field, are widely discussed. Special attention is given to the main food industries related to dairy, sugar and biotechnology. In addition, the potential of membrane techniques to assist in the treatment of waste sources arising from food production is highlighted.
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Affiliation(s)
- Katarzyna Staszak
- Institute of Technology and Chemical Engineering , Poznan University of Technology , Berdychowo 4 , Poznan , Poland
| | - Karolina Wieszczycka
- Institute of Technology and Chemical Engineering , Poznan University of Technology , Berdychowo 4 , Poznan , Poland
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