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Ionically interacti...
Ionically interacting nanoclay and nanofibrillated cellulose lead to tough bulk nanocomposites in compression by forced self-assembly
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- Jin, Hua (författare)
- Helsinki University of Technology, Finland
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- Cao, Anyuan (författare)
- Peking University, China
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- Shi, Enzheng (författare)
- Peking University, China
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- Seitsonen, Jani (författare)
- Aalto University, Finland
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- Zhang, Luhui (författare)
- Peking University, China
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- Ras, Robin H. A. (författare)
- Helsinki University of Technology, Finland
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- Berglund, Lars A. (författare)
- KTH,Biokompositer,Wallenberg Wood Science Center,KTH Royal Institute of Technology, Sweden
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- Ankerfors, Mikael (författare)
- RISE,Innventia
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- Walther, Andreas (författare)
- RWTH Aachen University, Germany
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- Ikkala, Olli (författare)
- Helsinki University of Technology, Finland
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(creator_code:org_t)
- 2013
- 2013
- Engelska.
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Ingår i: Journal of Materials Chemistry B. - : Royal Society of Chemistry (RSC). - 2050-750X .- 2050-7518. ; 1:6, s. 835-840
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Several approaches have recently been shown for self-assembled biomimetic composite films, aiming at combinations of high toughness, strength, and stiffness. However, it remains challenging to achieve high toughness using simple processes especially for bulk materials. We demonstrate that ionically interacting cationic native nanofibrillated cellulose (C-NFC) and anionic nanoclay, i.e. montmorillonite (MTM), allow local self-assemblies by a simple centrifugation process to achieve 3D bulk materials. The composite with MTM/C-NFC of 63/37 w/w has a high compressive strain to failure of 37% with distinct plastic deformation behaviour, a high work to fracture of 23.1 MJ m(-3), and a relatively high compression strength of 76 MPa. Unlike the conventionally used sequential deposition methods to achieve well-defined layers for the oppositely charged units as limited to films, the present one-step method allows quick formation of bulk materials and leads to local self-assemblies, however, having a considerable amount of nanovoids and defects between them. We suggest that the nanovoids and defects promote the plastic deformation and toughness. Considering the simple preparation method and bio-based origin of NFC, we expect that the present tough bulk nanocomposites in compression have potential in applications for sustainable and environmentally friendly materials in construction and transportation.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Kompositmaterial och -teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Composite Science and Engineering (hsv//eng)
Nyckelord
- Layered Silicate Nanocomposites
- Microfibrillated Cellulose
- Biomimetic Nanocomposites
- Polymer Nanocomposites
- Native Cellulose
- Composites
- Bone
- Nanofibers
- Nacre
- Deformation
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- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Jin, Hua
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Cao, Anyuan
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Shi, Enzheng
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Seitsonen, Jani
-
Zhang, Luhui
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Ras, Robin H. A.
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visa fler...
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Berglund, Lars A ...
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Ankerfors, Mikae ...
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Walther, Andreas
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Ikkala, Olli
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Materialkemi
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Nanoteknik
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Materialteknik
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och Kompositmaterial ...
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Journal of Mater ...
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J. Mater. Chem. ...
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Kungliga Tekniska Högskolan
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RISE