Swelling structure of thin poly(methyl methacrylate) films in various alkyl length alcohols

Hironori Atarashi; Hiroshi Morita; Dai Yamazaki; Masahiro Hino; Toshihiko Nagamura; Keiji Tanaka

doi:10.1021/jz100041h

Swelling structure of thin poly(methyl methacrylate) films in various alkyl length alcohols

Hironori Atarashi, Hiroshi Morita, Dai Yamazaki, Masahiro Hino, Toshihiko Nagamura, Keiji Tanaka

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

18 Citations (Scopus)

Abstract

Thin films of a typical glassy polymer in alcohol nonsolvents were structurally characterized by specular neutron reflectivity (NR) and were found to be discernibly swollen. The extent of penetration by the nonsolvent was determined by the chain length of the alcohol. Treating this situation as one of a macroscopic phase separation, the interaction Χ parameters for the polymer and nonsolvents combinations were extracted. This observation leads us to investigate the factors that control the nonsolvent/polymer interface, being an unusual example of a liquid/liquid interface. The fractional amount of nonsolvents at the substrate interface was higher than that in the internal region of the film. This segregation of a component in a phase-separated domain was explained in terms of an entropic factor.

Original language	English
Pages (from-to)	881-885
Number of pages	5
Journal	Journal of Physical Chemistry Letters
Volume	1
Issue number	5
DOIs	https://doi.org/10.1021/jz100041h
Publication status	Published - Mar 4 2010
Externally published	Yes

Keywords

Macromolecules
Soft Matter

ASJC Scopus subject areas

Materials Science(all)
Physical and Theoretical Chemistry

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10.1021/jz100041h

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abstract = "Thin films of a typical glassy polymer in alcohol nonsolvents were structurally characterized by specular neutron reflectivity (NR) and were found to be discernibly swollen. The extent of penetration by the nonsolvent was determined by the chain length of the alcohol. Treating this situation as one of a macroscopic phase separation, the interaction Χ parameters for the polymer and nonsolvents combinations were extracted. This observation leads us to investigate the factors that control the nonsolvent/polymer interface, being an unusual example of a liquid/liquid interface. The fractional amount of nonsolvents at the substrate interface was higher than that in the internal region of the film. This segregation of a component in a phase-separated domain was explained in terms of an entropic factor.",

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T1 - Swelling structure of thin poly(methyl methacrylate) films in various alkyl length alcohols

AU - Atarashi, Hironori

AU - Morita, Hiroshi

AU - Yamazaki, Dai

AU - Hino, Masahiro

AU - Nagamura, Toshihiko

AU - Tanaka, Keiji

PY - 2010/3/4

Y1 - 2010/3/4

N2 - Thin films of a typical glassy polymer in alcohol nonsolvents were structurally characterized by specular neutron reflectivity (NR) and were found to be discernibly swollen. The extent of penetration by the nonsolvent was determined by the chain length of the alcohol. Treating this situation as one of a macroscopic phase separation, the interaction Χ parameters for the polymer and nonsolvents combinations were extracted. This observation leads us to investigate the factors that control the nonsolvent/polymer interface, being an unusual example of a liquid/liquid interface. The fractional amount of nonsolvents at the substrate interface was higher than that in the internal region of the film. This segregation of a component in a phase-separated domain was explained in terms of an entropic factor.

AB - Thin films of a typical glassy polymer in alcohol nonsolvents were structurally characterized by specular neutron reflectivity (NR) and were found to be discernibly swollen. The extent of penetration by the nonsolvent was determined by the chain length of the alcohol. Treating this situation as one of a macroscopic phase separation, the interaction Χ parameters for the polymer and nonsolvents combinations were extracted. This observation leads us to investigate the factors that control the nonsolvent/polymer interface, being an unusual example of a liquid/liquid interface. The fractional amount of nonsolvents at the substrate interface was higher than that in the internal region of the film. This segregation of a component in a phase-separated domain was explained in terms of an entropic factor.

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KW - Soft Matter

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Swelling structure of thin poly(methyl methacrylate) films in various alkyl length alcohols

Abstract

Keywords

ASJC Scopus subject areas

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