Bitte benutzen Sie diese Kennung, um auf die Ressource zu verweisen: https://doi.org/10.21256/zhaw-23136
Publikationstyp: Beitrag in wissenschaftlicher Zeitschrift
Art der Begutachtung: Peer review (Publikation)
Titel: A chitosan nanofiber sponge for oyster-inspired filtration of microplastics
Autor/-in: Risch, Patricia
Adlhart, Christian
et. al: No
DOI: 10.1021/acsapm.1c00799
10.21256/zhaw-23136
Erschienen in: ACS Applied Polymer Materials
Band(Heft): 3
Heft: 9
Seite(n): 4685
Seiten bis: 4694
Erscheinungsdatum: 2021
Verlag / Hrsg. Institution: American Chemical Society
ISSN: 2637-6105
Sprache: Englisch
Schlagwörter: Biopolymer; Nanofiber; Aerogel; Adsorption; Electrospinning
Fachgebiet (DDC): 572: Biochemie
Zusammenfassung: For the first time, an ultralight chitosan-glutaraldehyde nanofiber sponge (chitosan NF sponge) was prepared. The present work describes its processing from pure electrospun chitosan nanofibers and its use for filtration applications. Chitosan/polyethylene oxide (PEO) nanofibers (NF) were electrospun from acetic acid into 309 ± 56 nm-thick nanofibers using high-throughput free-surface electrospinning. To yield chitosan NF sponges, PEO was extracted from the defect-free nanofiber mats. From these mats, nanofiber suspensions were prepared followed by casting and freeze-drying. Cross-linking of such obtained pristine chitosan NF sponges with glutaraldehyde improved water stability and resulted in chitosan NF sponges with a bulk density of 5.77 mg cm–3 and a porosity of 99.59%. The hierarchical pore architecture of the chitosan NF sponges was perfectly suited for particle adsorption as tested for poly(ethylene terephthalate)-microplastic (PET-MP) and Arizona test dust (ISO 12103-1) suspensions. Hydrostatic filtration with chitosan NF sponges reduced turbidity of particle suspensions by 99.46% nephelometric turbidity units (NTU) (PET-MP) and 99.49% (Arizona test dust). An oyster-inspired adsorption setup with 4000 actuated compression/relaxation cycles reduced the turbidity of PET-MP and Arizona test dust suspensions by 80.1 ± 1.5 and 91.9 ± 0.3% NTU, respectively. The preparation of biocompatible NF sponges from chitosan marine biomass has been demonstrated. These chitosan NF sponges can be used as efficient filters to tackle environmental challenges such as microplastics.
URI: https://digitalcollection.zhaw.ch/handle/11475/23136
Volltext Version: Publizierte Version
Lizenz (gemäss Verlagsvertrag): CC BY-NC-ND 4.0: Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International
Gesperrt bis: 2022-09-02
Departement: Life Sciences und Facility Management
Organisationseinheit: Institut für Chemie und Biotechnologie (ICBT)
Publiziert im Rahmen des ZHAW-Projekts: BIOMAT (Integrated Bio-based Materials Value Chains)
Enthalten in den Sammlungen:Publikationen Life Sciences und Facility Management

Dateien zu dieser Ressource:
Datei Beschreibung GrößeFormat 
2021_Risch-Adlhart_A-chitosan-nanofiber-sponge-for-oyster-inspired-filtration-of-microplastics.pdf5.76 MBAdobe PDFMiniaturbild
Öffnen/Anzeigen
Zur Langanzeige


Alle Ressourcen in diesem Repository sind urheberrechtlich geschützt, soweit nicht anderweitig angezeigt.