Block copolymer ordering in cylindrical capacitors

U. Welling; M. Müller; H. Shalev; Y. Tsori

doi:10.1021/ma4021888

Block copolymer ordering in cylindrical capacitors

U. Welling, M. Müller, H. Shalev, Y. Tsori

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

We investigate the morphologies of block copolymers confined in the region between two concentric and charged cylinders. The relative stability of a concentric lamellar phase compared to one where the lamellae are oriented in the radial direction is determined from the competition between long-range elastic and electrostatic forces. We find in weak and strong segregation and by single-chain-in-mean-field simulations that under sufficiently strong voltage difference there is a phase transition from concentric to radial lamellae containing defects. Above a threshold voltage the block copolymer melt develops an interfacial instability at a finite wavelength.

Original language	English
Pages (from-to)	1850-1864
Number of pages	15
Journal	Macromolecules
Volume	47
Issue number	5
DOIs	https://doi.org/10.1021/ma4021888
State	Published - 11 Mar 2014

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma4021888

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abstract = "We investigate the morphologies of block copolymers confined in the region between two concentric and charged cylinders. The relative stability of a concentric lamellar phase compared to one where the lamellae are oriented in the radial direction is determined from the competition between long-range elastic and electrostatic forces. We find in weak and strong segregation and by single-chain-in-mean-field simulations that under sufficiently strong voltage difference there is a phase transition from concentric to radial lamellae containing defects. Above a threshold voltage the block copolymer melt develops an interfacial instability at a finite wavelength.",

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AU - Welling, U.

AU - Müller, M.

AU - Shalev, H.

AU - Tsori, Y.

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N2 - We investigate the morphologies of block copolymers confined in the region between two concentric and charged cylinders. The relative stability of a concentric lamellar phase compared to one where the lamellae are oriented in the radial direction is determined from the competition between long-range elastic and electrostatic forces. We find in weak and strong segregation and by single-chain-in-mean-field simulations that under sufficiently strong voltage difference there is a phase transition from concentric to radial lamellae containing defects. Above a threshold voltage the block copolymer melt develops an interfacial instability at a finite wavelength.

AB - We investigate the morphologies of block copolymers confined in the region between two concentric and charged cylinders. The relative stability of a concentric lamellar phase compared to one where the lamellae are oriented in the radial direction is determined from the competition between long-range elastic and electrostatic forces. We find in weak and strong segregation and by single-chain-in-mean-field simulations that under sufficiently strong voltage difference there is a phase transition from concentric to radial lamellae containing defects. Above a threshold voltage the block copolymer melt develops an interfacial instability at a finite wavelength.

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U2 - 10.1021/ma4021888

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JO - Macromolecules

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Block copolymer ordering in cylindrical capacitors

Abstract

ASJC Scopus subject areas

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