Hydrophobic barrier: Molecular self-assembly of amphiphilic polyacetylenes within aluminosilicate nanoplatelets
| Autor: | Philip W. Gibson, Dongwook Kim, Jayant Kumar, Bon-Cheol Ku, Lynne A. Samuelson, Alexandre Blumstein, Diane M. Steeves, Jo Ann Ratto, Ramaswamy Nagarajan |
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| Rok vydání: | 2006 |
| Předmět: |
Double layer (biology)
chemistry.chemical_classification Materials science Inorganic chemistry Substrate (chemistry) Filtration and Separation Biochemistry Polyelectrolyte Membrane Chemical engineering chemistry Aluminosilicate Amphiphile Molecular self-assembly General Materials Science Physical and Theoretical Chemistry Alkyl |
| Zdroj: | Journal of Membrane Science. 275:12-16 |
| ISSN: | 0376-7388 |
| Popis: | In this paper, we describe nano-assembly of amphiphilic polyelectrolytes within aluminosilicate nanoplates by layer-by-layer deposition and demonstrate how the resulting films are capable of functioning as hydrophobic barrier. The polyelectrolytes with a rigid backbone and long alkyl substitutes organized within the inorganic nanosheets, to form a double layer of interdigitated alkyl substitutes. The resulting 100 nm-thick hydrophobic barriers efficiently blocked transport of moisture and hence enhanced the water vapor barrier properties of a relatively thick substrate (Nafion membrane, ca. 50 μm) up to 22 times. |
| Databáze: | OpenAIRE |
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