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 journalArticle

16 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 languageEnglish
Pages (from-to)881-885
Number of pages5
JournalJournal of Physical Chemistry Letters
Volume1
Issue number5
DOIs
Publication statusPublished - Mar 4 2010
Externally publishedYes

Fingerprint

Polymethyl Methacrylate
Polymethyl methacrylates
polymethyl methacrylate
swelling
Swelling
Polymers
alcohols
Alcohols
polymers
liquid-liquid interfaces
Liquids
Chain length
Phase separation
Neutrons
penetration
reflectance
neutrons
Thin films
Substrates
thin films

Keywords

  • Macromolecules
  • Soft Matter

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Swelling structure of thin poly(methyl methacrylate) films in various alkyl length alcohols. / Atarashi, Hironori; Morita, Hiroshi; Yamazaki, Dai; Hino, Masahiro; Nagamura, Toshihiko; Tanaka, Keiji.

In: Journal of Physical Chemistry Letters, Vol. 1, No. 5, 04.03.2010, p. 881-885.

Research output: Contribution to journalArticle

Atarashi, Hironori ; Morita, Hiroshi ; Yamazaki, Dai ; Hino, Masahiro ; Nagamura, Toshihiko ; Tanaka, Keiji. / Swelling structure of thin poly(methyl methacrylate) films in various alkyl length alcohols. In: Journal of Physical Chemistry Letters. 2010 ; Vol. 1, No. 5. pp. 881-885.
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