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Takeji Hashimoto

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Articles 18
Citations 31
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Recent Articles
11.
Koga T, Takenaka M, Aizawa K, Nakamura M, Hashimoto T
Langmuir . 2005 Nov; 21(24):11409-13. PMID: 16285818
We report the structures of dispersible units, a most fundamental but minimal dispersible structural unit of a carbon black (CB) filler that is formed in two kinds of rubber (polyisoprene...
12.
Kobayashi T, Takenaka M, Saijo K, Hashimoto T
J Colloid Interface Sci . 2005 Nov; 262(2):456-65. PMID: 16256626
We investigated the self-assembling structure of the 1,3:2,4-bis-O-(p-methylbenzylidene)-D-sorbitol (PDTS)/n-dibutylphthalate (DBP) system in the parameter space of temperature T and solute concentration Phi(PDTS). Optical microscopic studies revealed that the phase diagram...
13.
Takenaka M, Miyazawa M, Nishitsuji S, Hashimoto T
J Chem Phys . 2004 Oct; 121(15):7501-4. PMID: 15473825
Shear-induced phase separation was found in "nonentangled" oligomer mixture. The sheared mixture in one phase becomes turbid and its scattering pattern exhibits so-called "butterfly pattern" which is commonly observed in...
14.
Takenaka M, Kobayashi T, Saijo K, Tanaka H, Iwase N, Hashimoto T, et al.
J Chem Phys . 2004 Aug; 121(7):3323-8. PMID: 15291643
We investigated time evolution of shear moduli in the physical gelation process of 1,3:2,4-bis-O-(p-methylbenzylidene)-D-sorbitol in polystyrene melt. At the gel point, storage and loss shear moduli, G' and G", were...
15.
Fukunaga K, Hashimoto T
Phys Rev E Stat Nonlin Soft Matter Phys . 2004 Jun; 69(4 Pt 1):040801. PMID: 15169000
Thin films of a lamella-forming polystyrene-block-poly(2-vinylpyridine) diblock copolymer, PS-P2VP, were annealed by a tetrahydrofuran (THF) vapor treatment. The thin films immediately developed a multilayered lamellar structure, similar to those known...
16.
Kumaki J, Hashimoto T
J Am Chem Soc . 2003 Apr; 125(16):4907-17. PMID: 12696910
The random coil conformation of an isolated conventional synthetic polymer chain was clearly imaged by atomic force microscopy (AFM). The sample used was a poly(styrene)-block-poly(methyl methacrylate) diblock copolymer. A very...
17.
Takenaka M, Kobayashi T, Hashimoto T, Takahashi M
Phys Rev E Stat Nonlin Soft Matter Phys . 2002 May; 65(4 Pt 1):041401. PMID: 12005818
We investigated time evolution of shear moduli in the physical gelation process of 1,3:2,4-bis-O-(p-methylbenzylidene)-D-sorbitol (PDTS) in the polystyrene melt system containing 2.5 wt % of PDTS. At the gel point,...
18.
Takenaka M, Takeno H, Hasegawa H, Saito S, Hashimoto T, Nagao M
Phys Rev E Stat Nonlin Soft Matter Phys . 2002 Feb; 65(2 Pt 1):021806. PMID: 11863554
Relaxation processes of the concentration fluctuations induced by a rapid pressure change were investigated for a dynamically asymmetric polymer blend [deuterated polybutadiene (DPB)/polyisoprene (PI)] with a composition of 50-50 by...