WFRF:(Larsson Tomas)
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Advanced Characterization of Self-Fibrillating Cellulose Fibers and Their Use in Tunable Filters
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- Görür, Yunus Can (author)
- KTH,Fiberteknologi,KTH Royal Institute of Technology, Sweden
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- Reid, Michael (author)
- KTH,Fiberteknologi,KTH Royal Institute of Technology, Sweden
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- Montanari, Celine (author)
- KTH,Fiber- och polymerteknologi,KTH Royal Institute of Technology, Sweden; Wallenberg Wood Science Center, Sweden
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- (creator_code:org_t)
- 2021-06-09
- 2021
- English.
- In: ACS Applied Materials and Interfaces. - : American Chemical Society. - 1944-8244 .- 1944-8252. ; 13:27, s. 32467-32478
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Thorough characterization and fundamental understanding of cellulose fibers can help us develop new, sustainable material streams and advanced functional materials. As an emerging nanomaterial, cellulose nanofibrils (CNFs) have high specific surface area and good mechanical properties; however, handling and processing challenges have limited their widespread use. This work reports an in-depth characterization of self-fibrillating cellulose fibers (SFFs) and their use in smart, responsive filters capable of regulating flow and retaining nanoscale particles. By combining direct and indirect characterization methods with polyelectrolyte swelling theories, it was shown that introduction of charges and decreased supramolecular order in the fiber wall were responsible for the exceptional swelling and nanofibrillation of SFFs. Different microscopy techniques were used to visualize the swelling of SFFs before, during, and after nanofibrillation. Through filtration and pH adjustment, smart filters prepared via in situ nanofibrillation showed an ability to regulate the flow rate through the filter and a capacity of retaining 95% of 300 nm (diameter) silica nanoparticles. This exceptionally rapid and efficient approach for making smart filters directly addresses the challenges associated with dewatering of CNFs and bridges the gap between science and technology, making the widespread use of CNFs in high-performance materials a not-so-distant reality.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Pappers-, massa- och fiberteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Paper, Pulp and Fiber Technology (hsv//eng)
Keyword
- cellulose fibers
- CNF
- filter paper
- green materials
- nanofibrillation
- Cellulose
- Cellulose nanocrystals
- Filtration
- Functional materials
- Nanoparticles
- Natural fibers
- Polyelectrolytes
- Silica
- Silica nanoparticles
- Textile fibers
- Cellulose nanofibrils (CNFs)
- Characterization methods
- High performance material
- High specific surface area
- Microscopy technique
- Science and Technology
- Supramolecular ordering
- Sustainable materials
- Swelling
Publication and Content Type
- ref (subject category)
- art (subject category)
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