Nanofibrillated Cellulose Templated Membranes with High Permeance
Source abstract
Abstract
One of the most challenging aspects of using nanofibrillated cellulose (NFC) for membranes production is their limited permeance. When NFC membranes are produced from aqueous suspensions, depending on their grammage, the permeances are in the range of a few decades of L/(hm 2 MPa) not matching satisfactory filtration times. We present a fast and sustainable solution to increase the permeances of such membranes through a combination of solvent exchange of the NFC suspension with ethanol and the use of a removable template, a mixture of calcium compounds (CC). The effect of the CC/NFC ratio was screened for various concentrations. The permeance of water could be increased by as much as 2–3 times as compared to nontemplated membranes. Further, the membranes showed the ability for penetration of water-soluble macromolecules, contaminant rejection of suspended solid particles, and thus fluids (such as orange juice) could be concentrated, with a view to applications in food industry.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Cellulose Research Studies · biodegradable polymer synthesis and properties · Electrospun Nanofibers in Biomedical Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Applied Wood Materials Laboratory, Empa − Swiss Federal Laboratories for Material Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
ETH Zürich, Multifunctional Materials, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
DICMA, Alma Mater Studiorum-Università di Bologna, via Terracini 28, 40131 Bologna, Italy
Funding
Eidgenössische Materialprüfungs- und Forschungsanstalt
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