Dynamics of water-induced surface reorganization in poly(methyl methacrylate) films

Ayanobu Horinouchi, Hironori Atarashi, Yoshihisa Fujii, Keiji Tanaka

    Research output: Contribution to journalArticlepeer-review

    72 Citations (Scopus)


    At the outermost surface, aggregation states of polymers generally tend to alter to their most stable ones in response to their surrounding environment. We here apply a time-resolved contact angle measurement to study the rate of the surface reorganization of poly(methyl methacrylate) (PMMA) in water. By doing these measurements at various temperatures, it is possible to determine the apparent activation energy of the surface dynamics based on the relation of the surface relaxation time and temperature. Also, the sum-frequency generation spectroscopy revealed that the surface reorganization involves the conformational changes in the main chain part as well as the side chains. Hence, the dynamics observed here may reflect the segmental motion at the outermost region of the PMMA film, in which water plays as a plasticizer.

    Original languageEnglish
    Pages (from-to)4638-4642
    Number of pages5
    Issue number11
    Publication statusPublished - Jun 12 2012

    All Science Journal Classification (ASJC) codes

    • Organic Chemistry
    • Polymers and Plastics
    • Inorganic Chemistry
    • Materials Chemistry


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