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Issue 116, 2016
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Highly transparent and self-healing films based on the dynamic Schiff base linkage

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Abstract

Self-healing optically transparent coatings have attracted significant attention due to their high transparency and ability to heal damages at the same time. In this study, we report an optically transparent and self-healing film via a layer by layer assembly. This film is based on chitosan (CS) and poly(ethylene glycol) functionalized by dialdehyde groups (DF-PEG). The dynamic equilibrium of Schiff base linkage between the aldehyde groups on DF-PEG and amino groups on CS resulted in the self-healing property of the film. The CS/DF-PEG film can heal damages several times at the same location. Moreover, the Schiff base-bonded CS/DF-PEG films are highly transparent with a transmittance of up to 99.47%, and the transmittance of the film can remain at 99% after ten damage/healing processes. The combination of self-healing property and high transparency provides a new method for fabricating the optically transparent devices.

Graphical abstract: Highly transparent and self-healing films based on the dynamic Schiff base linkage

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Publication details

The article was received on 26 Sep 2016, accepted on 30 Nov 2016 and first published on 02 Dec 2016


Article type: Paper
DOI: 10.1039/C6RA23886F
RSC Adv., 2016,6, 115247-115251

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    Highly transparent and self-healing films based on the dynamic Schiff base linkage

    J. Ren, Y. Zhu, H. Xuan, X. Liu, Z. Lou and L. Ge, RSC Adv., 2016, 6, 115247
    DOI: 10.1039/C6RA23886F

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