Solvent Influence on Thickness, Composition, and Morphology Variation with Dip-Coating Rate in Supramolecular PS-b-P4VP Thin Films
| Autor: | Cé Guinto Gamys, C. Geraldine Bazuin, Robert E. Prud'homme, Christian Pellerin, Stéphanie Boissé, Sébastien Roland, Josué Grosrenaud |
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| Rok vydání: | 2015 |
| Předmět: |
Range (particle radiation)
Morphology (linguistics) Materials science Polymers and Plastics Organic Chemistry Supramolecular chemistry Analytical chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Dip-coating Toluene 0104 chemical sciences Inorganic Chemistry Solvent chemistry.chemical_compound chemistry Polymer chemistry Materials Chemistry Copolymer Thin film 0210 nano-technology |
| Zdroj: | Macromolecules. 48:4823-4834 |
| ISSN: | 1520-5835 0024-9297 |
| DOI: | 10.1021/acs.macromol.5b00847 |
| Popis: | Recent literature has shown that the thickness of dip-coated films has a V-shaped dependence on dip-coating rate when very slow rates are included. For supramolecular block copolymer films, small molecule (SM) uptake and film morphology are also rate-dependent, as shown previously for a poly(styrene-b-4-vinylpyridine) (PS–P4VP) block copolymer in THF solutions containing naphthol (NOH) and naphthoic acid (NCOOH). Here, these investigations are extended to p-dioxane, toluene, and CHCl3 solutions. The V-shaped thickness dependence is validated for each solvent, but with the V minimum displaced to lower dip-coating rates and thicknesses for the solvents with lower vapor pressures (p-dioxane, toluene), thereby decreasing the dip-coating rate range of the “capillarity regime” (slow side of the V) and consequently extending that of the “draining regime” (fast side of the V). The SM/VP uptake ratio varies with the nature of the solvent, particularly in the capillarity regime, where it is higher for solvents that... |
| Databáze: | OpenAIRE |
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