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ion conductivity of styrene-ethylene oxide multiblock copolymer electrolytesSarapas, J. M.*; Saijo, Kenji*; Zhao, Y.; Takenaka, Mikihito*; Tew, G. N.*
Polymers for Advanced Technologies, 27(7), p.946 - 954, 2016/07
Times Cited Count：10 Percentile：36.08(Polymer Science)
-poly(methyl methacrylate) with Pd nanoparticlesZhao, Y.; Saijo, Kenji*; Hashimoto, Takeji
Macromolecules, 46(3), p.957 - 970, 2013/02
Times Cited Count：7 Percentile：22.66(Polymer Science)Mita, Kazuki*; Tanaka, Hirokazu*; Saijo, Kenji*; Takenaka, Mikihito*; Hashimoto, Takeji
Macromolecules, 40(16), p.5923 - 5933, 2007/08
Times Cited Count：41 Percentile：75.03(Polymer Science)A zone heating method, which imposes the moving temperature-gradient field on order in process of various melts in general, enabled to control a macroscopic orientation of microdomain structures in block copolymer bulk. We applied the method to a polystyrene-block-polyisoprene diblock copolymer forming hexagonally packed cylindrical domains (hex-cyl) in the absence of extermal fields. We discovered that the method creates the following special texture of hex-cyl; (1) The texture seemingly consists of volume-filled columnar grains with the grain axis parallel to the temperature gradient axis (defined as the oz axis). (2) The cylinder axis always orients perpendicular to the oz axis with a rotational angle 
of the cylinder axis around the oz axis being fixed within a grain.
-1,4-polybutadiene rubberSaijo, Kenji*; Zhu, Y.*; Hashimoto, Takeji; Wasiak, A.*; Brzostowski, N.*
Journal of Applied Polymer Science, 105(1), p.137 - 157, 2007/07
Times Cited Count：15 Percentile：44.09(Polymer Science)Crosslink -1,4-polybutadiene (PB) rubber is known to undergo crystallization during mechanical deformation. This article presents small-angle X-ray scattering (SAXS), wide-angle X-ray scattering (WAXS), and stress-relaxation studies of the structural development in crosslinked PB samples crystallized under various orientation regimes. The studies are concerned with isothermal crystallization at various temperatures (10 to -50
C) and at constant elongation ratios (1-4,5) and hence with the effects of weak -to-intermediate and high orientations on oriented crystalliation versus the behavior of unoriented specimens. Although the crystallization in the weak-to-intermediate orientations is interpreted on the basis of nucleation growth, the crystallization under high orientations is best interpreted on the basis of spinodal crstallization. To the best of our knowledge, this work reports for the first time spinodal-like crystallization on oriented crosslinked polymer melts.
