Strong temperature dependencies of diblock copolymer domain spacing in a solvent mixture comprising ternary components with varied selectivity

Autor:	Akifumi Matsushita, Shigeru Okamoto
Rok vydání:	2015
Předmět:	chemistry.chemical_classification Materials science Polymers and Plastics Analytical chemistry Polymer Atmospheric temperature range Solvent Wavelength Reflection (mathematics) chemistry Polymer chemistry Materials Chemistry Copolymer Selectivity Ternary operation
Zdroj:	Polymer Journal. 47:385-390
ISSN:	1349-0540 0032-3896
DOI:	10.1038/pj.2015.4
Popis:	We investigated the temperature-dependent domain spacing of lamella-forming polystyrene-block-polyisoprene (PS-b-PI) with different molecular weights, swollen with solvent mixtures consisting of a PS-selective solvent, dimethylphthalate, a PI-selective solvent, n-tetradecane and a neutral solvent, di-n-octylphthalate. The domain spacing showed stronger temperature dependencies than a neat diblock copolymer. The dependencies varied widely with the polymer concentration and solvent composition. The reflection peaks for a solution of the higher molecular weight PS-b-PI were astonishingly tunable over wavelengths between 836 and 377 nm in the temperature range from 20 to 80 °C.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::861cb667aa4ce05a7cafbdaa46f98eed https://doi.org/10.1038/pj.2015.4 Zobrazit plný text záznamu Full text from SpringerLink