Surface aggregation structure of (linear polystyrene / hyperbranched polystyrene) blend films

Fumi Ariura, Keiji Tanaka, Toshihiko Nagamura, Alain Deffieux, Michel Schappacher, Masahiro Hino, Tisato Kajiyama

    研究成果: 会議への寄与タイプ学会誌査読

    2 被引用数 (Scopus)


    Aggregation structure of (linear polystyrene / hyperbranched polystyrene) blend films was examined by dynamic secondary ion mass spectroscopy (DSIMS) and neutron reflectivity (NR). Two types of monodisperse hyperbranched polystyrenes (HB-PS) with longer and shorter branches were synthesized combing cationic and anionic polymerizations. Total molecular mass for the both was fixed to be 1M. Deuterated polystyrene (dPS) with molecular weight of 1M was used as a linear component. DSIMS and NR measurements revealed that HB-PS are preferentially segregated at both surface and substrate interface. Interestingly, to what extent HB-PS exists at the surface and interface was dependent on the architecture of HB-PS. This might be explained in terms of number density of chain ends and distorted chain conformation. The above results were in good accordance with a prediction based on simulation using a self-consistent filed theory. Finally, it was concluded that surface aggregation states, resulting in surface physical properties, of conventional polymers would be regulated by an addition of a little amount of hyperbranched component.

    出版ステータス出版済み - 2005
    イベント54th SPSJ Symposium on Macromolecules - Yamagata, 日本
    継続期間: 9月 20 20059月 22 2005


    その他54th SPSJ Symposium on Macromolecules

    !!!All Science Journal Classification (ASJC) codes

    • 工学一般


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