Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-23136
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dc.contributor.authorRisch, Patricia-
dc.contributor.authorAdlhart, Christian-
dc.date.accessioned2021-09-18T12:17:15Z-
dc.date.available2021-09-18T12:17:15Z-
dc.date.issued2021-
dc.identifier.issn2637-6105de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/23136-
dc.description.abstractFor 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.de_CH
dc.language.isoende_CH
dc.publisherAmerican Chemical Societyde_CH
dc.relation.ispartofACS Applied Polymer Materialsde_CH
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/4.0/de_CH
dc.subjectBiopolymerde_CH
dc.subjectNanofiberde_CH
dc.subjectAerogelde_CH
dc.subjectAdsorptionde_CH
dc.subjectElectrospinningde_CH
dc.subject.ddc572: Biochemiede_CH
dc.titleA chitosan nanofiber sponge for oyster-inspired filtration of microplasticsde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementLife Sciences und Facility Managementde_CH
zhaw.organisationalunitInstitut für Chemie und Biotechnologie (ICBT)de_CH
dc.identifier.doi10.1021/acsapm.1c00799de_CH
dc.identifier.doi10.21256/zhaw-23136-
zhaw.funding.euNode_CH
zhaw.issue9de_CH
zhaw.originated.zhawYesde_CH
zhaw.pages.end4694de_CH
zhaw.pages.start4685de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume3de_CH
zhaw.embargo.end2022-09-02de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
zhaw.webfeedFunktionsmaterialien und Nanotechnologiede_CH
zhaw.funding.zhawBIOMAT (Integrated Bio-based Materials Value Chains)de_CH
zhaw.author.additionalNode_CH
zhaw.display.portraitYesde_CH
Appears in collections:Publikationen Life Sciences und Facility Management



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