Large-scale self-assembled zirconium phosphate smectic layers via a simple spray-coating process
| Autor: | Minhao Wong, Peng Li, Kevin L. White, Atsushi Takahara, Hung-Jue Sue, Ramanan Krishnamoorti, Riichi Nishimura, Daehak Kim, Ryohei Ishige, Hiroshi Jinnai, Robert A. Gunther, Takeshi Higuchi |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Multidisciplinary
Materials science General Physics and Astronomy Mesophase Nanotechnology General Chemistry Substrate (electronics) Epoxy engineering.material General Biochemistry Genetics and Molecular Biology chemistry.chemical_compound Rheology Coating Zirconium phosphate chemistry visual_art engineering visual_art.visual_art_medium Lamellar structure Thin film Composite material |
| Zdroj: | Nature Communications. 5 |
| ISSN: | 2041-1723 |
| DOI: | 10.1038/ncomms4589 |
| Popis: | The large-scale assembly of asymmetric colloidal particles is used in creating high-performance fibres. A similar concept is extended to the manufacturing of thin films of self-assembled two-dimensional crystal-type materials with enhanced and tunable properties. Here we present a spray-coating method to manufacture thin, flexible and transparent epoxy films containing zirconium phosphate nanoplatelets self-assembled into a lamellar arrangement aligned parallel to the substrate. The self-assembled mesophase of zirconium phosphate nanoplatelets is stabilized by epoxy pre-polymer and exhibits rheology favourable towards large-scale manufacturing. The thermally cured film forms a mechanically robust coating and shows excellent gas barrier properties at both low- and high humidity levels as a result of the highly aligned and overlapping arrangement of nanoplatelets. This work shows that the large-scale ordering of high aspect ratio nanoplatelets is easier to achieve than previously thought and may have implications in the technological applications for similar materials. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|