liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Explaining the Exceptional Wet Integrity of Transparent Cellulose Nanofibril Films in the Presence of Multivalent Ions: Suitable Substrates for Biointerfaces
Department of Fiber Technology, KTH, Stockholm, Sweden.
Department of Fiber Technology, KTH, Stockholm, Sweden.
Linköping University, Department of Management and Engineering, Solid Mechanics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-1503-8293
Department of Fiber Technology, KTH, Stockholm, Sweden.
2019 (English)In: Advanced Materials Interfaces, ISSN 2196-7350, Vol. 13, no 6, article id 1900333Article in journal (Refereed) Published
Abstract [en]

Cellulose nanofibrils (CNFs) assemble into water‐resilient materials in the presence of multivalent counter‐ions. The essential mechanisms behind these assemblies are ion–ion correlation and specific ion effects. A network model shows that the interfibril attraction indirectly influences the wet modulus by a fourth power relationship to the solidity of the network (Ew ∝ φ4). Ions that induce both ion–ion correlation and specific ion effects significantly reduce the swelling of the films, and due to the nonlinear relationship dramatically increase the wet modulus. Herein, this network model is used to explain the elastoplastic behavior of wet films of 2,2,6,6‐tetramethylpiperidine‐1‐oxyl radical (TEMPO)‐oxidized, carboxymethylated, and phosphorylated CNFs in the presence of different counter‐ions. The main findings are that the aspect ratio of the CNFs influences the ductility of the assemblies, that the bivalency of phosphorylate ligands probably limits the formation of interfibril complexes with divalent ions, and that a higher charge density increases the friction between fibrils by increasing the short‐range attraction from ion–ion correlation and specific ion effects. These findings can be used to rationally design CNF materials for a variety of applications where wet strength, ductility, and transparency are important, such as biomaterials or substrates for bioelectronics.

Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2019. Vol. 13, no 6, article id 1900333
National Category
Paper, Pulp and Fiber Technology Nano Technology Materials Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-158508DOI: 10.1002/admi.201900333ISI: 000478635700019Scopus ID: 2-s2.0-85065451547OAI: oai:DiVA.org:liu-158508DiVA, id: diva2:1334315
Funder
Knut and Alice Wallenberg Foundation
Note

Funding agencies: Knut and Alice Wallenberg Foundation; Wallenberg Wood Science Center (WWSC)

Available from: 2019-07-02 Created: 2019-07-02 Last updated: 2019-08-19Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records BETA

Lindström, Stefan B

Search in DiVA

By author/editor
Lindström, Stefan B
By organisation
Solid MechanicsFaculty of Science & Engineering
In the same journal
Advanced Materials Interfaces
Paper, Pulp and Fiber TechnologyNano TechnologyMaterials Chemistry

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 33 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf