Confinement Effect on the Effective Viscosity of Plasticized Polymer Films

F. Chen, D. Peng, Y. Ogata, K. Tanaka, Z. Yang, Y. Fujii, N. L. Yamada, C. H. Lam, O. K.C. Tsui

    研究成果: Contribution to journalArticle査読

    19 被引用数 (Scopus)

    抄録

    We have measured the effective viscosity of polystyrene films with a small (4 wt %) added amount of dioctyl phthalate (DOP) deposited on silica. A broad range of molecular weights, Mw, from 13.7 to 2100 kg/mol was investigated. Our result shows that for the thin films with Mw < ∼100 kg/mol the addition of DOP causes the effective viscosity to decrease by a factor of ∼4, independent of Mw. But for the higher Mw films, the effective viscosity of the DOP added films creeps toward that of the neat films with increasing Mw. A model assuming the effective viscosity to be dominated by enhanced surface mobility for the lower Mw films but surface-promoted interfacial slippage for the higher Mw films is able to account for the experimental observations.

    本文言語英語
    ページ(範囲)7719-7726
    ページ数8
    ジャーナルMacromolecules
    48
    20
    DOI
    出版ステータス出版済み - 10 27 2015

    All Science Journal Classification (ASJC) codes

    • 有機化学
    • ポリマーおよびプラスチック
    • 無機化学
    • 材料化学

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