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Ion-Specific Assembly of Strong, Tough, and Stiff Biofibers
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Fluid Mechanics and Engineering Acoustics, Fluid Physics. KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW. Massachusetts Institute of Technology, Cambridge, MA 02142, United States.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology. KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center.ORCID iD: 0000-0003-4388-8970
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Fluid Mechanics and Engineering Acoustics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
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2019 (English)In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 58, no 51, p. 18562-18569Article in journal (Refereed) Published
Abstract [en]

Designing engineering materials with high stiffness and high toughness is challenging as stiff materials tend to be brittle. Many biological materials realize this objective through multiscale (i.e., atomic- to macroscale) mechanisms that are extremely difficult to replicate in synthetic materials. Inspired from the architecture of such biological structures, we here present flow-assisted organization and assembly of renewable native cellulose nanofibrils (CNFs), which yields highly anisotropic biofibers characterized by a unique combination of high strength (1010 MPa), high toughness (62 MJ m−3) and high stiffness (57 GPa). We observed that properties of the fibers are primarily governed by specific ion characteristics such as hydration enthalpy and polarizability. A fundamental facet of this study is thus to elucidate the role of specific anion binding following the Hofmeister series on the mechanical properties of wet fibrillar networks, and link this to the differences in properties of dry nanostructured fibers. This knowledge is useful for rational design of nanomaterials and is critical for validation of specific ion effect theories. The bioinspired assembly demonstrated here is relevant example for designing high-performance materials with absolute structural control.

Place, publisher, year, edition, pages
Wiley-Blackwell, 2019. Vol. 58, no 51, p. 18562-18569
Keywords [en]
anions, Hofmeister series, mechanical properties, nanomaterials, self-assembly
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-267872DOI: 10.1002/anie.201910603ISI: 000493848500001PubMedID: 31600016Scopus ID: 2-s2.0-85074859635OAI: oai:DiVA.org:kth-267872DiVA, id: diva2:1410921
Note

QC 20200302

Available from: 2020-03-02 Created: 2020-03-02 Last updated: 2020-03-02Bibliographically approved

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Mittal, NiteshBenselfelt, TobiasGordeyeva, KorneliyaWågberg, LarsSöderberg, Daniel

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Mittal, NiteshBenselfelt, TobiasGordeyeva, KorneliyaRoth, Stephan VolkherWågberg, LarsSöderberg, Daniel
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Fluid PhysicsWallenberg Wood Science CenterLinné Flow Center, FLOWFibre TechnologyFluid Mechanics and Engineering AcousticsCoating TechnologyFibre- and Polymer Technology
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