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Using bacteria to make improved, nacre-inspiredmaterials

Published online by Cambridge University Press:  24 February 2016

Dominik T. Schmieden ,
Anne S. Meyer  and
Marie-Eve Aubin-Tam
Dominik T. Schmieden
Affiliation:
Department of Bionanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands
Anne S. Meyer*
Affiliation:
Department of Bionanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands
Marie-Eve Aubin-Tam*
Affiliation:
Department of Bionanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands
*
*Corresponding authors: A.S.Meyer@tudelft.nl,M.E.Aubin-Tam@tudelft.nl
*Corresponding authors: A.S.Meyer@tudelft.nl,M.E.Aubin-Tam@tudelft.nl

Abstract

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Nacre (mother of pearl) is an attractive model for the development of newmaterials. Its sheet structure of alternating layers of calcium carbonate and anorganic matrix confers it highly desirable properties such as high toughness andstrength. In this study, we produce a nacre-inspired composite material usingonly bacterially-produced components. Calcium carbonate is crystallized via theaction of ureolytic bacteria. After each crystallization event, we applybacterially produced γ-polyglutamate (PGA) to the sample, whichpromotes layering compared to the PGA-free control. We show that the combinationof these two compounds yields a layered material reminiscent of nacre, showing away towards the biotechnological production of new, nacre-inspiredmaterials.

Keywords

compositebiomaterialbiomimetic (chemical reaction)
Type
Articles
Information
MRS Advances , Volume 1 , Issue 8: Biomaterials and Soft Materials , 2016 , pp. 559 - 564
Copyright
Copyright © Materials Research Society 2016 

References

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