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Langmuir. 2012 May 1;28(17):6826-31. doi: 10.1021/la300831p. Epub 2012 Apr 17.

Fuzzy nanoassembly of polyelectrolyte and layered clay multicomposite toward a reliable gas barrier.

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  • 1Display and Nanosystem Laboratory, College of Engineering, Korea University, Seoul, Republic of Korea.


Flexible and transparent gas-diffusion barriers have played an important role in recent years. The present study describes a flexible barrier film with a tailored architecture of cationic polyelectrolytes and clay/polymer nanoassemblies. Highly oriented and well-aligned barrier films were achieved by the consecutive absorption of flexible cationic polymer and anionic montmorillonite platelets. The experimental results showed that the layer-by-layer deposition of oppositely charged thin films containing self-assembled poly(vinyl alcohol) and montmorillonites improved their gas barrier characteristics based on the Ca degradation test, enhancing their optical transparency. This nanostructure, fabricated using a solution process, is useful in many applications, for example, flexible and moisture-free organic electronics. This simple and fast method is suitable for the mass coating of large surface areas, as required in industry.

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