Origin of the thermoreversible fcc-bcc transition in block copolymer solutions

Timothy P. Lodge; Joona Bang; Moon Jeong Park; Kookheon Char

doi:10.1103/PhysRevLett.92.145501

Origin of the thermoreversible fcc-bcc transition in block copolymer solutions

Timothy P. Lodge, Joona Bang, Moon Jeong Park, Kookheon Char

Department of Chemical and Biological Engineering

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

73 Citations (Scopus)

Abstract

The thermoreversible fcc-bcc transition in concentrated block copolymer micellar solutions was discussed. It was found that temperature-induced changes in micellar characteristics, particularly the mean aggregation number was quantified in dilute solutions. It was demonstrated that the softening of the intermicelle potential with decreasing aggregation number was the key feature. Analysis shows that the observed phase boundary was in excellent agreement with simulations of highly branched star polymers.

Original language	English
Article number	145501
Pages (from-to)	145501-1-145501-4
Journal	Physical review letters
Volume	92
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.92.145501
Publication status	Published - 2004 Apr 9

ASJC Scopus subject areas

Physics and Astronomy(all)

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abstract = "The thermoreversible fcc-bcc transition in concentrated block copolymer micellar solutions was discussed. It was found that temperature-induced changes in micellar characteristics, particularly the mean aggregation number was quantified in dilute solutions. It was demonstrated that the softening of the intermicelle potential with decreasing aggregation number was the key feature. Analysis shows that the observed phase boundary was in excellent agreement with simulations of highly branched star polymers.",

author = "Lodge, {Timothy P.} and Joona Bang and Park, {Moon Jeong} and Kookheon Char",

note = "Funding Information: This work was supported primarily by the MRSEC Program of the National Science Foundation under Grant No. DMR-0212302, and also in part by the Brain Korea 21 Program endorsed by the Korean Ministry of Education. We acknowledge helpful discussions with C. N. Likos.",

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AU - Park, Moon Jeong

AU - Char, Kookheon

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AB - The thermoreversible fcc-bcc transition in concentrated block copolymer micellar solutions was discussed. It was found that temperature-induced changes in micellar characteristics, particularly the mean aggregation number was quantified in dilute solutions. It was demonstrated that the softening of the intermicelle potential with decreasing aggregation number was the key feature. Analysis shows that the observed phase boundary was in excellent agreement with simulations of highly branched star polymers.

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Origin of the thermoreversible fcc-bcc transition in block copolymer solutions

Abstract

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