偏光顕微鏡を用いた過渡刺激による分子鎖配向変化の測定 : 緩和法による複屈折率測定

概要

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We intended to establish the measuring techniques of the relaxation method proposed us [Bull. Fac. Human Environ. Sci., Fukuoka Women's Univ., 28,37 (1997)] to make clear a penetration process of a solvent molecule into a polymer solid. The polymer solids employed were two kinds of regenerated cellulose hollow fibers composed of fine spherical particles. The solvent molecules were benzene, acetone, methanol, and ethylene glycol. The temperature dependence of birefringence Δn of a polymer solid in a solvent was measured by Berec's compensator method using polarization microscope. By intruding sample into a measuring bath with a solvent kept at constant temperature, time dependence of Δn was evaluated reproducibly. A transitional molecular chain relaxation behavior were evaluated by measuring of Δn response against time after the stepwise temperature and/or solvent concentration change. The relaxation method would quantitatively evaluate the following items : (1) thermal molecular motion coexisting a solvent, (2) concentration of a solvent molecule in specific amorphous region, (3) degree of molecular chain orientation in specific region.
福岡女子大学の論文
2001-01-31