Abstract
| Original language | English |
|---|---|
| Article number | 5967 |
| Journal | Nature Communications |
| Volume | 6 |
| DOIs | |
| Publication status | Published - 2015 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- Biomimetic synthesis
- Nanoscale materials
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Nacre-mimetics with synthetic nanoclays up to ultrahigh aspect ratios. / Das, Paramita; Malho, Jani-Markus; Rahimi, Khosrow; Schacher, Felix H.; Wang, Baochun; Demco, Dan Eugen; Walther, Andreas.
In: Nature Communications, Vol. 6, 5967, 2015.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Nacre-mimetics with synthetic nanoclays up to ultrahigh aspect ratios
AU - Das, Paramita
AU - Malho, Jani-Markus
AU - Rahimi, Khosrow
AU - Schacher, Felix H.
AU - Wang, Baochun
AU - Demco, Dan Eugen
AU - Walther, Andreas
PY - 2015
Y1 - 2015
N2 - Nacre-mimetics hold great promise as mechanical high-performance and functional materials. Here we demonstrate large progress of mechanical and functional properties of self-assembled polymer/nanoclay nacre-mimetics by using synthetic nanoclays with aspect ratios covering three orders in magnitude (25-3,500). We establish comprehensive relationships among structure formation, nanostructuration, deformation mechanisms and mechanical properties as a function of nanoclay aspect ratio, and by tuning the viscoelastic properties of the soft phase via hydration. Highly ordered, large-scale nacre-mimetics are obtained even for low aspect ratio nanoplatelets and show pronounced inelastic deformation with very high toughness, while those formed by ultralarge nanoplatelets exhibit superb stiffness and strength, previously only reachable for highly crosslinked materials. Regarding functionalities, we report formerly impossible glass-like transparency, and excellent gas barrier considerably exceeding earlier nacre-mimetics based on natural nanoclay. Our study enables rational design of future high-performance nacre-mimetic materials and opens avenues for ecofriendly, transparent, self-standing and strong advanced barrier materials.
AB - Nacre-mimetics hold great promise as mechanical high-performance and functional materials. Here we demonstrate large progress of mechanical and functional properties of self-assembled polymer/nanoclay nacre-mimetics by using synthetic nanoclays with aspect ratios covering three orders in magnitude (25-3,500). We establish comprehensive relationships among structure formation, nanostructuration, deformation mechanisms and mechanical properties as a function of nanoclay aspect ratio, and by tuning the viscoelastic properties of the soft phase via hydration. Highly ordered, large-scale nacre-mimetics are obtained even for low aspect ratio nanoplatelets and show pronounced inelastic deformation with very high toughness, while those formed by ultralarge nanoplatelets exhibit superb stiffness and strength, previously only reachable for highly crosslinked materials. Regarding functionalities, we report formerly impossible glass-like transparency, and excellent gas barrier considerably exceeding earlier nacre-mimetics based on natural nanoclay. Our study enables rational design of future high-performance nacre-mimetic materials and opens avenues for ecofriendly, transparent, self-standing and strong advanced barrier materials.
KW - Biomimetic synthesis
KW - Nanoscale materials
U2 - 10.1038/ncomms6967
DO - 10.1038/ncomms6967
M3 - Article
VL - 6
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
M1 - 5967
ER -