Self-Assembly of Surface-Active Powder at the Interfaces of Selective Liquids. 1: Multiple Structural Polymorphism
| Autor: | Hajime Hotta, Kaoru Tsujii, Yoshimune Nonomura, Akio Kashimoto, Keiichi Fukuda, Sugawara Toru |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
chemistry.chemical_classification
Ternary numeral system Materials science Mixed states PERFLUOROPOLYMETHYLISOPROPYL ETHER Surfaces and Interfaces Condensed Matter Physics Silicone oil chemistry.chemical_compound Polymorphism (materials science) Chemical engineering chemistry Silicone resin Emulsion Electrochemistry Organic chemistry General Materials Science Self-assembly Spectroscopy |
| Zdroj: | Langmuir. 18:10163-10167 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/la020511u |
| Popis: | A ternary system consisting of a surface-active powder (fluorinated silicone resin powder), fluorinated oil (perfluoropolymethylisopropyl ether, PFPE), and silicone oil (dimethylpolysiloxane, DMS) has been studied and found to exhibit multiple structural polymorphism in the mixed states. The mixed states were classified into seven different regions and ruled roughly by the composition ratio of the powder and the PFPE. For PFPE compositions which exceed the absorption limit of the powder, the continuous phase was PFPE and four mixed states were observed, that is, a network-structured state, an O/F emulsion state (O/F emulsion means a DMS-in-PFPE type emulsion), an O/F emulsion state with excess PFPE and DMS phases, and a powder dispersion state with excess PFPE and DMS phases. On the other hand, in the region in which the amount of PFPE was less than the absorption limit of the powder the continuous phase was DMS and three mixed states, powdery state, granular state, and dispersion state containing the PFP... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|