Effects of component viscosities on flow-induced alignment of lamellae of diblock copolymers

Yoshiaki Takahashi

Effects of component viscosities on flow-induced alignment of lamellae of diblock copolymers

Yoshiaki Takahashi

Department of Advanced Device Materials

Research output: Contribution to conference › Paper › peer-review

Abstract

Flow-induced alignment of two lamellar forming diblock copolymers, one with components having different viscosities and another having almost the same viscosities are compared based on the interaction parameters, (χN) _eff, of the components. It is concluded that the degree of perpendicular alignment (ratio of sector averaged intensities) is primarily determined by (χN)_eff and reduced shear rates. In addition, concentration and shear rate regions in which parallel alignment coexists become narrower for the diblock copolymers consist of components with almost the same viscosities.

Original language	English
Pages	3976-3977
Number of pages	2
Publication status	Published - 2005
Event	54th SPSJ Symposium on Macromolecules - Yamagata, Japan Duration: Sept 20 2005 → Sept 22 2005

Other

Other	54th SPSJ Symposium on Macromolecules
Country/Territory	Japan
City	Yamagata
Period	9/20/05 → 9/22/05

All Science Journal Classification (ASJC) codes

Engineering(all)

Cite this

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title = "Effects of component viscosities on flow-induced alignment of lamellae of diblock copolymers",

abstract = "Flow-induced alignment of two lamellar forming diblock copolymers, one with components having different viscosities and another having almost the same viscosities are compared based on the interaction parameters, (χN) eff, of the components. It is concluded that the degree of perpendicular alignment (ratio of sector averaged intensities) is primarily determined by (χN)eff and reduced shear rates. In addition, concentration and shear rate regions in which parallel alignment coexists become narrower for the diblock copolymers consist of components with almost the same viscosities.",

author = "Yoshiaki Takahashi",

year = "2005",

language = "English",

pages = "3976--3977",

note = "54th SPSJ Symposium on Macromolecules ; Conference date: 20-09-2005 Through 22-09-2005",

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TY - CONF

T1 - Effects of component viscosities on flow-induced alignment of lamellae of diblock copolymers

AU - Takahashi, Yoshiaki

PY - 2005

Y1 - 2005

N2 - Flow-induced alignment of two lamellar forming diblock copolymers, one with components having different viscosities and another having almost the same viscosities are compared based on the interaction parameters, (χN) eff, of the components. It is concluded that the degree of perpendicular alignment (ratio of sector averaged intensities) is primarily determined by (χN)eff and reduced shear rates. In addition, concentration and shear rate regions in which parallel alignment coexists become narrower for the diblock copolymers consist of components with almost the same viscosities.

AB - Flow-induced alignment of two lamellar forming diblock copolymers, one with components having different viscosities and another having almost the same viscosities are compared based on the interaction parameters, (χN) eff, of the components. It is concluded that the degree of perpendicular alignment (ratio of sector averaged intensities) is primarily determined by (χN)eff and reduced shear rates. In addition, concentration and shear rate regions in which parallel alignment coexists become narrower for the diblock copolymers consist of components with almost the same viscosities.

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UR - http://www.scopus.com/inward/citedby.url?scp=33645556713&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:33645556713

SP - 3976

EP - 3977

T2 - 54th SPSJ Symposium on Macromolecules

Y2 - 20 September 2005 through 22 September 2005

ER -

Effects of component viscosities on flow-induced alignment of lamellae of diblock copolymers

Abstract

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All Science Journal Classification (ASJC) codes

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