Large-Scale Alignment of ABC Block Copolymer Microdomains via Solvent Vapor Treatment

Large-Scale Alignment of ABC Block Copolymer Microdomains via Solvent Vapor Treatment

We have studied the microdomain morphology of thin ABC triblock copolymer films supported by a solid substrate. The films were exposed to various solvent vapors, and the effect of the solvent removal speed on the resulting morphologies is investigated. Slow solvent extraction rates lead to a paralle...

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Veröffentlicht in:Macromolecules 2000-02, Vol.33 (3), p.947-953
Hauptverfasser: Fukunaga, Kenji, Elbs, Hubert, Magerle, Robert, Krausch, Georg
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Sprache:eng
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Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Structure, morphology and analysis
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container_title Macromolecules
container_volume 33
creator Fukunaga, Kenji
Elbs, Hubert
Magerle, Robert
Krausch, Georg
description We have studied the microdomain morphology of thin ABC triblock copolymer films supported by a solid substrate. The films were exposed to various solvent vapors, and the effect of the solvent removal speed on the resulting morphologies is investigated. Slow solvent extraction rates lead to a parallel alignment of lamellar microphases within the plane of the film. On fast drying, a perpendicular orientation of the lamellae is found. In the case of block copolymer samples with a highly anisotropic macroscopic shape, the microdomains can be aligned over large lateral areas. The results are discussed in view of the mechanical strain fields present during the drying process.
doi_str_mv 10.1021/ma9910639
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subjects Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Structure, morphology and analysis
title Large-Scale Alignment of ABC Block Copolymer Microdomains via Solvent Vapor Treatment
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