Fluorescence study on the conformational change of an amino group-containing polymer chain grafted onto a polyethylene microfiltration membrane

Satoshi Tsuneda, Toshihiro Endo, Kyoichi Saito, Kazuyuki Sugita, Kazuyuki Horie, Takashi Yamashita, Takanobu Sugo

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    Abstract

    The fluorescence probe technique was used to investigate the characteristics of an amino group-containing polymer chain grafted onto a polyethylene microfiltration (MF) membrane. The amino group-containing polymer chain labeled with a dansyl group that served as a fluorescence probe was grafted onto a polyethylene MF membrane by radiation-induced graft polymerization. The conformational changes of the grafted polymer chain (graft chain) in various solvents were monitored by considering that the steady-state fluorescence emission spectrum of the dansyl group was affected by the polarity of the solvent, the polyethylene, and the graft chain itself. The shift of the emission peak wavelength of graft chains with different lengths demonstrated that the graft chain containing amino groups stretched in water and methanol and shrank in dimethylformamide, acetone, and benzene. These results corresponded to changes in solvent permeability through the membrane pore to which the amino group-containing polymer chains were grafted.

    Original languageEnglish
    Pages (from-to)366-370
    Number of pages5
    JournalMacromolecules
    Volume31
    Issue number2
    Publication statusPublished - 1998 Jan 27

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    ASJC Scopus subject areas

    • Materials Chemistry

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