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Gas barrier properties of bio-inspired Laponite–LC polymer hybrid films

Gas barrier properties of bio-inspired Laponite–LC polymer hybrid films

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TRITSCHLER, Ulrich, Igor ZLOTNIKOV, Peter FRATZL, Helmut SCHLAAD, Simon GRÜNER, Helmut CÖLFEN, 2016. Gas barrier properties of bio-inspired Laponite–LC polymer hybrid films. In: Bioinspiration & Biomimetics. 11(3), 035005. ISSN 1748-3182. eISSN 1748-3190. Available under: doi: 10.1088/1748-3190/11/3/035005

@article{Tritschler2016-06-01barri-34394, title={Gas barrier properties of bio-inspired Laponite–LC polymer hybrid films}, year={2016}, doi={10.1088/1748-3190/11/3/035005}, number={3}, volume={11}, issn={1748-3182}, journal={Bioinspiration & Biomimetics}, author={Tritschler, Ulrich and Zlotnikov, Igor and Fratzl, Peter and Schlaad, Helmut and Grüner, Simon and Cölfen, Helmut}, note={Article Number: 035005} }

eng Tritschler, Ulrich 2016-06-14T13:47:39Z Grüner, Simon Zlotnikov, Igor Grüner, Simon 2016-06-14T13:47:39Z terms-of-use Cölfen, Helmut Fratzl, Peter Tritschler, Ulrich Schlaad, Helmut 2016-06-01 Zlotnikov, Igor Schlaad, Helmut Cölfen, Helmut Fratzl, Peter Bio-inspired Laponite (clay)-liquid crystal (LC) polymer composite materials with high clay fractions (>80%) and a high level of orientation of the clay platelets, i.e. with structural features similar to the ones found in natural nacre, have been shown to exhibit a promising behavior in the context of reduced oxygen transmission. Key characteristics of these bio-inspired composite materials are their high inorganic content, high level of exfoliation and orientation of the clay platelets, and the use of a LC polymer forming the organic matrix in between the Laponite particles. Each single feature may be beneficial to increase the materials gas barrier property rendering this composite a promising system with advantageous barrier capacities. In this detailed study, Laponite/LC polymer composite coatings with different clay loadings were investigated regarding their oxygen transmission rate. The obtained gas barrier performance was linked to the quality, respective Laponite content and the underlying composite micro- and nanostructure of the coatings. Most efficient oxygen barrier properties were observed for composite coatings with 83% Laponite loading that exhibit a structure similar to sheet-like nacre. Further on, advantageous mechanical properties of these Laponite/LC polymer composites reported previously give rise to a multifunctional composite system. Gas barrier properties of bio-inspired Laponite–LC polymer hybrid films

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