Baroplastic behavior of miscible block copolymer blends

Yonghoon Lee; Hoyeon Lee; Sang Woo Kim; Sungmin Park; Eunhye Kim; Young Soo Han; Du Yeol Ryu

doi:10.1016/j.polymer.2014.11.011

Baroplastic behavior of miscible block copolymer blends

Yonghoon Lee, Hoyeon Lee, Sang Woo Kim, Sungmin Park, Eunhye Kim, Young Soo Han, Du Yeol Ryu

Department of Chemical and Biomolecular Engineering

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

12 Citations (Scopus)

Abstract

Pressure dependence of various phase transitions for the miscible block copolymer (BCP) blends was evaluated by depolarized light scattering (DPLS) and small-angle neutron scattering (SANS) measurements, in which the blends consist of a polystyrene-b-poly(n-butyl methacrylate) (PS-b-PnBMA) and a deuterated polystyrene-b-poly(n-hexyl methacrylate) (dPS-b-PnHMA). Excellent baroplasticity was observed in nearly symmetric blends of PS-b-PnBMA/dPS-b-PnHMA, leading to the most outstanding pressure coefficients, |dT/dP|, in a closed-loop type phase behavior between a lower disorder-to-order transition (LDOT) and an order-to-disorder transition (ODT) type phase behavior. Together with the estimated pressure coefficients based on the values of enthalpic and volumetric changes at phase transitions, we demonstrate that the entropic compressibility for the miscible BCP blends is a baroplastic indicator, which was characterized by the negative volume change on mixing (&V_mix) at transitions.

Original language	English
Pages (from-to)	6967-6972
Number of pages	6
Journal	polymer
Volume	55
Issue number	26
DOIs	https://doi.org/10.1016/j.polymer.2014.11.011
Publication status	Published - 2014 Dec 15

Bibliographical note

Funding Information:
This work was supported by the NRF grants ( 2011-0022690 ), Nuclear R&D Programs, and APCPI ERC ( 2007-0056091 ) funded by the Ministry of Science, ICT & Future Planning (MSIP), Korea .

Publisher Copyright:
© 2014 Elsevier Ltd. All rights reserved.

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1016/j.polymer.2014.11.011

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title = "Baroplastic behavior of miscible block copolymer blends",

abstract = "Pressure dependence of various phase transitions for the miscible block copolymer (BCP) blends was evaluated by depolarized light scattering (DPLS) and small-angle neutron scattering (SANS) measurements, in which the blends consist of a polystyrene-b-poly(n-butyl methacrylate) (PS-b-PnBMA) and a deuterated polystyrene-b-poly(n-hexyl methacrylate) (dPS-b-PnHMA). Excellent baroplasticity was observed in nearly symmetric blends of PS-b-PnBMA/dPS-b-PnHMA, leading to the most outstanding pressure coefficients, |dT/dP|, in a closed-loop type phase behavior between a lower disorder-to-order transition (LDOT) and an order-to-disorder transition (ODT) type phase behavior. Together with the estimated pressure coefficients based on the values of enthalpic and volumetric changes at phase transitions, we demonstrate that the entropic compressibility for the miscible BCP blends is a baroplastic indicator, which was characterized by the negative volume change on mixing (&Vmix) at transitions.",

author = "Yonghoon Lee and Hoyeon Lee and Kim, {Sang Woo} and Sungmin Park and Eunhye Kim and Han, {Young Soo} and Ryu, {Du Yeol}",

note = "Funding Information: This work was supported by the NRF grants ( 2011-0022690 ), Nuclear R&D Programs, and APCPI ERC ( 2007-0056091 ) funded by the Ministry of Science, ICT & Future Planning (MSIP), Korea . Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd. All rights reserved.",

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doi = "10.1016/j.polymer.2014.11.011",

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AU - Lee, Yonghoon

AU - Lee, Hoyeon

AU - Kim, Sang Woo

AU - Park, Sungmin

AU - Kim, Eunhye

AU - Han, Young Soo

AU - Ryu, Du Yeol

N1 - Funding Information: This work was supported by the NRF grants ( 2011-0022690 ), Nuclear R&D Programs, and APCPI ERC ( 2007-0056091 ) funded by the Ministry of Science, ICT & Future Planning (MSIP), Korea . Publisher Copyright: © 2014 Elsevier Ltd. All rights reserved.

PY - 2014/12/15

Y1 - 2014/12/15

N2 - Pressure dependence of various phase transitions for the miscible block copolymer (BCP) blends was evaluated by depolarized light scattering (DPLS) and small-angle neutron scattering (SANS) measurements, in which the blends consist of a polystyrene-b-poly(n-butyl methacrylate) (PS-b-PnBMA) and a deuterated polystyrene-b-poly(n-hexyl methacrylate) (dPS-b-PnHMA). Excellent baroplasticity was observed in nearly symmetric blends of PS-b-PnBMA/dPS-b-PnHMA, leading to the most outstanding pressure coefficients, |dT/dP|, in a closed-loop type phase behavior between a lower disorder-to-order transition (LDOT) and an order-to-disorder transition (ODT) type phase behavior. Together with the estimated pressure coefficients based on the values of enthalpic and volumetric changes at phase transitions, we demonstrate that the entropic compressibility for the miscible BCP blends is a baroplastic indicator, which was characterized by the negative volume change on mixing (&Vmix) at transitions.

AB - Pressure dependence of various phase transitions for the miscible block copolymer (BCP) blends was evaluated by depolarized light scattering (DPLS) and small-angle neutron scattering (SANS) measurements, in which the blends consist of a polystyrene-b-poly(n-butyl methacrylate) (PS-b-PnBMA) and a deuterated polystyrene-b-poly(n-hexyl methacrylate) (dPS-b-PnHMA). Excellent baroplasticity was observed in nearly symmetric blends of PS-b-PnBMA/dPS-b-PnHMA, leading to the most outstanding pressure coefficients, |dT/dP|, in a closed-loop type phase behavior between a lower disorder-to-order transition (LDOT) and an order-to-disorder transition (ODT) type phase behavior. Together with the estimated pressure coefficients based on the values of enthalpic and volumetric changes at phase transitions, we demonstrate that the entropic compressibility for the miscible BCP blends is a baroplastic indicator, which was characterized by the negative volume change on mixing (&Vmix) at transitions.

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Baroplastic behavior of miscible block copolymer blends

Abstract

Bibliographical note

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