| Title: |
Micrometric length scale structural organization of Cellulose NanoCrystal suspensions under shear flow probes by 2D – Static Light scattering |
| Authors: |
Challamel, Mathilde; Elchamaa, Mohamad; Baup, Stéphane; Hengl, Nicolas; Djeridi, Henda; Pignon, Frédéric |
| Contributors: |
Laboratoire Rhéologie et Procédés (LRP); Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Centre National de la Recherche Scientifique (CNRS); Laboratoire des Écoulements Géophysiques et Industriels Grenoble (LEGI) |
| Source: |
6th EPNOE International Polysaccharide Conference, 21-24 October 2019 Aveiro (Portugal); https://hal.science/hal-04904283; 6th EPNOE International Polysaccharide Conference, 21-24 October 2019 Aveiro (Portugal), Oct 2019, Aveiro (Portugal), Portugal |
| Publisher Information: |
CCSD |
| Publication Year: |
2019 |
| Collection: |
Université Grenoble Alpes: HAL |
| Subject Terms: |
[SPI]Engineering Sciences [physics] |
| Subject Geographic: |
Aveiro (Portugal); Portugal |
| Description: |
International audience ; The ultrasonic (US) effect on structural organization inside the concentration polarization layer during cross-flow ultrafiltration of cellulose nanocrystals (CNC) suspensions has been characterized by in-situ time-resolved small-angle X-ray scattering (SAXS). A ‘‘SAXS Cross-Flow US-coupling Filtration Cell’’ has been developed to, on the one hand, apply the ultrasonic waves close to the flat membrane by immerging in the feed compartment a thin titanium vibrating blade connected to a ultrasonic generator of 20 kHz; on the other hand, monitor in-situ the colloidal organization of concentration polarization layer by SAXS. Thanks to this cell, concentration profiles and structural organization (orientation, aggregation/disaggregation) have been highlighted as a function of the distance z from the membrane surface with 20 µm accuracy and linked to the permeate flux, cross-flow and transmembrane pressure registered simultaneously. Rheological behaviors as well as the structure properties have been explored by controlling the ultrasonic irradiation during filtration. |
| Document Type: |
conference object |
| Language: |
English |
| Availability: |
https://hal.science/hal-04904283 |
| Accession Number: |
edsbas.F3FBD97D |
| Database: |
BASE |