Large-area, lightweight and thick biomimetic composites with superior material properties via fast, economic, and green pathways

Andreas Walther (Corresponding Author), Ingela Bjurhager, Jani-Markus Malho, Jaakko Pere, Janne Ruokolainen, Lars A. Berglund, Olli Ikkala (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

293 Citations (Scopus)

Abstract

Although remarkable success has been achieved to mimic the mechanically excellent structure of nacre in laboratory-scale models, it remains difficult to foresee mainstream applications due to time-consuming sequential depositions or energy-intensive processes. Here, we introduce a surprisingly simple and rapid methodology for large-area, lightweight, and thick nacre-mimetic films and laminates with superior material properties. Nanoclay sheets with soft polymer coatings are used as ideal building blocks with intrinsic hard/soft character. They are forced to rapidly self-assemble into aligned nacre-mimetic films via paper-making, doctor-blading or simple painting, giving rise to strong and thick films with tensile modulus of 45 GPa and strength of 250 MPa, that is, partly exceeding nacre. The concepts are environmentally friendly, energy-efficient, and economic and are ready for scale-up via continuous roll-to-roll processes. Excellent gas barrier properties, optical translucency, and extraordinary shape-persistent fire-resistance are demonstrated. We foresee advanced large-scale biomimetic materials, relevant for lightweight sustainable construction and energy-efficient transportation.
Original languageEnglish
Pages (from-to)2742-2748
Number of pages7
JournalNano Letters
Volume10
Issue number8
DOIs
Publication statusPublished - 2010
MoE publication typeA1 Journal article-refereed

Fingerprint

Nacre
biomimetics
Biomimetics
economics
Materials properties
Biomimetic materials
Fire resistance
Economics
composite materials
Composite materials
Painting
Thick films
Laminates
flammability
Optical properties
Elastic moduli
scale models
Coatings
laminates
thick films

Keywords

  • Biomimetic materials
  • nacre
  • self-assembly
  • layered composite
  • mechanical properties

Cite this

Walther, Andreas ; Bjurhager, Ingela ; Malho, Jani-Markus ; Pere, Jaakko ; Ruokolainen, Janne ; Berglund, Lars A. ; Ikkala, Olli. / Large-area, lightweight and thick biomimetic composites with superior material properties via fast, economic, and green pathways. In: Nano Letters. 2010 ; Vol. 10, No. 8. pp. 2742-2748.
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author = "Andreas Walther and Ingela Bjurhager and Jani-Markus Malho and Jaakko Pere and Janne Ruokolainen and Berglund, {Lars A.} and Olli Ikkala",
year = "2010",
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Walther, A, Bjurhager, I, Malho, J-M, Pere, J, Ruokolainen, J, Berglund, LA & Ikkala, O 2010, 'Large-area, lightweight and thick biomimetic composites with superior material properties via fast, economic, and green pathways', Nano Letters, vol. 10, no. 8, pp. 2742-2748. https://doi.org/10.1021/nl1003224

Large-area, lightweight and thick biomimetic composites with superior material properties via fast, economic, and green pathways. / Walther, Andreas (Corresponding Author); Bjurhager, Ingela; Malho, Jani-Markus; Pere, Jaakko; Ruokolainen, Janne; Berglund, Lars A.; Ikkala, Olli (Corresponding Author).

In: Nano Letters, Vol. 10, No. 8, 2010, p. 2742-2748.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Large-area, lightweight and thick biomimetic composites with superior material properties via fast, economic, and green pathways

AU - Walther, Andreas

AU - Bjurhager, Ingela

AU - Malho, Jani-Markus

AU - Pere, Jaakko

AU - Ruokolainen, Janne

AU - Berglund, Lars A.

AU - Ikkala, Olli

PY - 2010

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AB - Although remarkable success has been achieved to mimic the mechanically excellent structure of nacre in laboratory-scale models, it remains difficult to foresee mainstream applications due to time-consuming sequential depositions or energy-intensive processes. Here, we introduce a surprisingly simple and rapid methodology for large-area, lightweight, and thick nacre-mimetic films and laminates with superior material properties. Nanoclay sheets with soft polymer coatings are used as ideal building blocks with intrinsic hard/soft character. They are forced to rapidly self-assemble into aligned nacre-mimetic films via paper-making, doctor-blading or simple painting, giving rise to strong and thick films with tensile modulus of 45 GPa and strength of 250 MPa, that is, partly exceeding nacre. The concepts are environmentally friendly, energy-efficient, and economic and are ready for scale-up via continuous roll-to-roll processes. Excellent gas barrier properties, optical translucency, and extraordinary shape-persistent fire-resistance are demonstrated. We foresee advanced large-scale biomimetic materials, relevant for lightweight sustainable construction and energy-efficient transportation.

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KW - mechanical properties

U2 - 10.1021/nl1003224

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