Transition behavior of PS-b-PMMA films on the balanced interfacial interactions

Eunhye Kim; Seunghoon Choi; Rui Guo; Du Yeol Ryu; Craig J. Hawker; Thomas P. Russell

doi:10.1016/j.polymer.2010.10.055

Transition behavior of PS-b-PMMA films on the balanced interfacial interactions

Eunhye Kim, Seunghoon Choi, Rui Guo, Du Yeol Ryu, Craig J. Hawker, Thomas P. Russell

Department of Chemical and Biomolecular Engineering

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

27 Citations (Scopus)

Abstract

The thickness dependence of the order-to-disorder transition (ODT), measured by in situ grazing-incidence small-angle X-ray scattering (GISAXS), has been investigated in thin films of a symmetric polystyrene-b-poly(methyl methacrylate) (PS-b-PMMA) on a random copolymer (P(S-r-MMA)) grafted to the substrate where the interfacial interactions are balanced. With decreasing film thickness less than 25L₀, the ODT significantly decreases to 193°C for film of 10L₀ in thickness, because the interfacial interactions by a random copolymer grafted to the substrate provide a surface-induced compatibilization toward two block components. However, a plateau of the ODT at ∼213°C for films thicker than 25L₀ was observed above the bulk value of 200°C. The elevation of this ODT indicates a suppression of compositional fluctuations normal to the film surface, more than likely because the dominant orientation of the lamellar microdomains was found to be parallel to the film surface.

Original language	English
Pages (from-to)	6313-6318
Number of pages	6
Journal	polymer
Volume	51
Issue number	26
DOIs	https://doi.org/10.1016/j.polymer.2010.10.055
Publication status	Published - 2010 Dec 10

Bibliographical note

Funding Information:
This work was supported by the Nuclear R&D Programs, APCPI ERC program (R11-2007-050-00000), and NRF grant (2010-0015410) funded by the Ministry of Education, Science & Technology (MEST), Samsung Electronics fund, Korea , Department of Energy (DOE), Office of Basic Energy Science, and the National Science Foundation ( MRSEC Program DMR-0520415 ), US.

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1016/j.polymer.2010.10.055

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title = "Transition behavior of PS-b-PMMA films on the balanced interfacial interactions",

abstract = "The thickness dependence of the order-to-disorder transition (ODT), measured by in situ grazing-incidence small-angle X-ray scattering (GISAXS), has been investigated in thin films of a symmetric polystyrene-b-poly(methyl methacrylate) (PS-b-PMMA) on a random copolymer (P(S-r-MMA)) grafted to the substrate where the interfacial interactions are balanced. With decreasing film thickness less than 25L0, the ODT significantly decreases to 193°C for film of 10L0 in thickness, because the interfacial interactions by a random copolymer grafted to the substrate provide a surface-induced compatibilization toward two block components. However, a plateau of the ODT at ∼213°C for films thicker than 25L0 was observed above the bulk value of 200°C. The elevation of this ODT indicates a suppression of compositional fluctuations normal to the film surface, more than likely because the dominant orientation of the lamellar microdomains was found to be parallel to the film surface.",

author = "Eunhye Kim and Seunghoon Choi and Rui Guo and Ryu, {Du Yeol} and Hawker, {Craig J.} and Russell, {Thomas P.}",

note = "Funding Information: This work was supported by the Nuclear R&D Programs, APCPI ERC program (R11-2007-050-00000), and NRF grant (2010-0015410) funded by the Ministry of Education, Science & Technology (MEST), Samsung Electronics fund, Korea , Department of Energy (DOE), Office of Basic Energy Science, and the National Science Foundation ( MRSEC Program DMR-0520415 ), US.",

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doi = "10.1016/j.polymer.2010.10.055",

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AU - Kim, Eunhye

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AU - Ryu, Du Yeol

AU - Hawker, Craig J.

AU - Russell, Thomas P.

N1 - Funding Information: This work was supported by the Nuclear R&D Programs, APCPI ERC program (R11-2007-050-00000), and NRF grant (2010-0015410) funded by the Ministry of Education, Science & Technology (MEST), Samsung Electronics fund, Korea , Department of Energy (DOE), Office of Basic Energy Science, and the National Science Foundation ( MRSEC Program DMR-0520415 ), US.

PY - 2010/12/10

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N2 - The thickness dependence of the order-to-disorder transition (ODT), measured by in situ grazing-incidence small-angle X-ray scattering (GISAXS), has been investigated in thin films of a symmetric polystyrene-b-poly(methyl methacrylate) (PS-b-PMMA) on a random copolymer (P(S-r-MMA)) grafted to the substrate where the interfacial interactions are balanced. With decreasing film thickness less than 25L0, the ODT significantly decreases to 193°C for film of 10L0 in thickness, because the interfacial interactions by a random copolymer grafted to the substrate provide a surface-induced compatibilization toward two block components. However, a plateau of the ODT at ∼213°C for films thicker than 25L0 was observed above the bulk value of 200°C. The elevation of this ODT indicates a suppression of compositional fluctuations normal to the film surface, more than likely because the dominant orientation of the lamellar microdomains was found to be parallel to the film surface.

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Transition behavior of PS-b-PMMA films on the balanced interfacial interactions

Abstract

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