Combinatorial Mapping of the Phase Behavior of ABC Triblock Terpolymers in Thin Films: Experiments

Autor:	Alamgir Karim, Christopher M. Stafford, Sabine Ludwigs, Robert Magerle, Eric J. Amis, Kristin Schmidt, Georg Krausch, Michael J. Fasolka
Rok vydání:	2005
Předmět:	Materials science Polymers and Plastics Annealing (metallurgy) Organic Chemistry Methacrylate Surface energy Styrene Inorganic Chemistry Solvent chemistry.chemical_compound Chemical engineering chemistry Polymer chemistry Materials Chemistry Stable phase Thin film Scaling
Zdroj:	Macromolecules. 38:1850-1858
ISSN:	1520-5835 0024-9297
DOI:	10.1021/ma049048d
Popis:	We report on the thin film phase behavior of poly(styrene)-block-poly(2-vinylpyridine)-block-poly(tert-butyl methacrylate) triblock terpolymers with volume fractions φPS:φP2VP:φPtBMA scaling as 1:1.2:x, with x ranging from 3.05 to 4. On controlled annealing in the vapor of a nearly nonselective solvent the films form terraces of well-defined thickness with a highly ordered hexagonally perforated lamella structure. Using a gradient combinatorial technique we are able to systematically map the dependence of the morphology on the film thickness. By use of substrates with different surface energy we demonstrate that the perforated lamella is a stable phase, regardless of the chemical nature of the substrate, which makes the structure and methodology robust for application in nanotechnology.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e1c45a2ee154e464f8f71e006d58b658 https://doi.org/10.1021/ma049048d Zobrazit plný text záznamu