Interdiffusion of cyclic polystyrene whose molecular weight is larger than the critical entanglement molecular weight

Daisuke Kawaguchi, Atsushi Takano, Yushu Matsushita, Keiji Tanaka, Toshihiko Nagamura, Naoya Torikai

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)

    Abstract

    Interdiffusion of cyclic polystyrene (c-hPS) / cyclic deuterated polystyrene (c-dPS) laminated film whose molecular weights are ca.50 k was examined by neutron reflectivity and dynamic secondary ion mass spectroscopy. It has been found that time evolution of the interfacial thicknesses of (c-hPS/c-dPS) multi-layer films are similar to those of the corresponding linear hPS/linear dPS (l-hPS/l-dPS) bilayer films at short time region. However, at the annealing time longer than 5×103 s, the interfacial thicknesses of (c-hPS/c-dPS) multi-layer films are evidently larger than those of the (l-hPS/l-dPS) films at each observing time. These results can be explained in terms of the less entanglement nature of cyclic polymers than that of the linear ones.

    Original languageEnglish
    Pages (from-to)113-115
    Number of pages3
    JournalNihon Reoroji Gakkaishi
    Volume36
    Issue number2
    DOIs
    Publication statusPublished - Jul 14 2008

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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