Faculty Information, Institute for Chemical Research, Kyoto University   [ English | Japanese ]


MASUBUCHI, Yuichi

Division of Multidisciplinary Chemistry - Molecular Rheology -
Associate Professor
Ph. D
URL:http://masubuchi.jp
E-mail: mas@scl.kyoto-u.ac.jp
Tel: 0774-38-3136
Fax: 0774-38-3139
Academic career
    Ph. D in Nagoya Univ. in 1996.
    Research Associate in Yamagata Univ. from 1996 to 2001.
    Visiting Researcher in Univ. Naples in 1999.
    Assistant Professor in Nagoya Univ. from 2001 to 2004.
    Associate Professor in Tokyo Univ. Agriculture and Tech. from 2004 to 2007.
    Associate Professor in Kyoto Univ. since 2007.
Research field
    Polymer rheology and computational polymer physics
Current research
  1. Molecular models for polymer dynamics
  2. Multiscale methods in polymer models
  3. Individual polymer motion in entangled polymers
Selected publications
  1. Y. Masubuchi, Y. Matsumiya, H. Watanabe, S. Shiromoto, M. Tsutsubuchi and Y. Togawa, Primitive Chain Network Simulations for Comb-Branched Polymer under Step Shear Deformations Rheol. Acta (2011)
  2. C. Chung, T. Uneyama, Y. Masubuchi and H. Watanabe, Numerical study of chain conformation on shear banding using diffusive Rolie-Poly model Rheol. Acta (2011)
  3. N. Rakkapao, V. Vao-soongnern, Y. Masubuchi and H. Watanabe, Miscibility of Chitosan/Poly(ethylene oxide) Blends and Effect of Doping Alkali and Alkali Earth Metal Ions on Chitosan/PEO interaction POLYMER 52, 2618-2627 (2011).
  4. Y. Masubuchi, Y. Matsumiya and H. Watanabe, Primitive chain network simulations for asymmetric star polymers J. Chem. Phys. 134, 194905 (2011)
  5. Q. Chen, Y. Matsumiya, Y. Masubuchi, H. Watanabe and T. Inoue, Dynamics of Polyisoprene-Poly(p-tert-butylstyrene) Diblock Copolymer in Disordered State Macromolecules 44, 1585–1602 (2011).
  6. K. Furuichi, C. Nonomura, Y. Masubuchi and H. Watanabe, Chain contraction and nonlinear stress damping in primitive chain network simulations J. Chem. Phys. 132, 174902 (2010)
  7. A. Uno, Y. Matsumiya, Y. Masubuchi, and H. Watanabe, Rheological and Dielectric Behavior of Polyisoprene under Pressurized Carbon Dioxide Nihon Reoroji Gakkaishi (J. Soc. Rheol. Japan) 38, 117-123 (2010)
  8. Y. Masubuchi, T. Uneyama, H. Watanabe, G. Ianniruberto, F. Greco, and G. Marrucci, , Structure of Entangled Polymer Network from Primitive Chain Network Simulations J. Chem. Phys. 132, 134902 (2010)
  9. Masubuchi Y, Furuichi K, Horio K, Uneyama T, Watanabe H, Ianniruberto G, Greco F, Marrucci G, Primitive Chain Network Simulations for Entangled DNA Solutions J. Chem. Phys. 131, [114906-1]-[114906-8] (2009)
  10. Kawakita H, Uneyama T, Kojima M, Morishima K, Masubuchi Y, Watanabe H, Formation of Globules and Aggregates of DNA Chains in DNA/Polyethylene glycol/monovalent Salt Aqueous Solutions J. Chem. Phys. 131, [094901-1]-[094901-9] (2009)
  11. Okuda S, Inoue Y, Masubuchi Y, Uneyama T, Hojo M, Wall Boundary Model for Primitive Chain Network Simulations J. Chem. Phys. 130, [214907-1]-[214907-7] (2009)
  12. Sato H, Masubuchi Y, Watanabe H, DNA Diffusion in Aqueous Solution in Presence of Suspended Particles J. Polym. Sci. B Polym. Phys. 47, 1103-1101 (2009)
  13. Uneyama T, Masubuchi Y, Horio K, Matsumiya Y, Watanabe H, Pathak JA, Roland CM, A Theoretical Analysis of Rheodielectric Response of Type-A Polymer Chains J. Polym. Sci. B Polym. Phys. 47, 1039-1057 (2009)
  14. Moriya M, Roschzttardtz F, Nakahara Y, Saito H, Masubuchi Y, Asakura T, Rheological Properties of Native Silk Fibroins from Domestic and Wild Silkworms, and Flow Analysis in Each Spinneret by a Finite Element Method Biomacromolecules 10, 929-935 (2009)
  15. Masubuchi Y, Uneyama T, Watanabe H, Ianniruberto G, Greco F, Marrucci G, Primitive Chain Network Simulations of Conformational Relaxation for Individual Molecules in the Entangled State. II. Retraction from Stretched States Nihon Reoroji Gakkaishi (J. Soc. Rheol. Japan) 37, 65-68 (2009)
  16. Kenji Furuichi, Chisato Nonomura, Yuichi Masubuchi, Hiroshi Watanabe, Giovanni Ianniruberto, Francesco Greco and Giuseppe Marrucci, Entangled polymer orientation and stretch under large step shear deformations in primitive chain network simulations Rheologica Acta 47(5-6), 591-599 (2008)
  17. Motoaki Moriya, Kosuke Ohgo, Yuichi Masubuchi, David P. Knight and Tetsuo Asakura, Micro-computerized tomographic observation of the spinning apparatus in Bombyx mori silkworms Polymer 49(26), 5665-5669 (2008)
  18. Yuichi Masubuchi, Hiroshi Watanabe, Giovanni Ianniruberto, Francesco Greco and Giuseppe Marrucci, Comparison among Slip-Link Simulations of Bidisperse Linear Polymer Melts Macromolecules 41(21), 8275-8280 (2008).
  19. Quan Chen, Yumi Matsumiya, Yuichi Masubuchi, Hiroshi Watanabe and Tadashi Inoue, Component Dynamics in Polyisoprene/Poly(4-tert-butylstyrene) Miscible Blends Macromolecules 41(22), 8694-8711 (2008).
  20. Yuichi Masubuchi, Hiroshi Watanabe, Giovanni Ianniruberto, Francesco Greco and Giuseppe Marrucci , Primitive Chain Network Simulations of Conformational Relaxation for Individual Molecules in the Entangled State NIHON REOROJI GAKKAISHI (J. Soc. Rheol. Jpn) 36 (4), 181-185 (2008)
  21. S. Ouchi, Y. Masubuchi, H. Shikuma, The Effect of CO2 Pressure on Viscoelasticity of LDPE International Polymer Processing 2008/2, 173-177 (2008).
  22. Moriya M, Ohgo K, Masubuchi Y, Asakura T, Flow analysis of aqueous solution of silk fibroin in the spinneret of Bombyx mori silkworm by combination of viscosity measurement and finite element method calculation POLYMER 49(4), 952-956 (2008).
  23. Masubuchi Y, Ianniruberto G, Greco F, Marrucci G , Quantitative comparison of primitive chain network simulations with literature data of linear viscoelasticity for polymer melts JOURNAL OF NON-NEWTONIAN FLUID MECHANICS 149(1-3), 87-92 (2008).
  24. Y. Masubuchi, G. Ianniruberto, F. Greco and G. Marrucci, Primitive Chain Network Simulations for Bidisperse Linear Polymers Int. J. Nano Adv. Eng. Mat., Part A. 1(1), 35-40 (2008).
  25. Yaoita T, Isaki T, Masubuchi Y, Watanabe H, Ianniruberto G, Greco F, Marrucci G., Statics, linear, and nonlinear dynamics of entangled polystyrene melts simulated through the primitive chain network model. J Chem Phys 128, 154901 (2008).  [pubmed]
  26. Hosono N, Masubuchi Y, Furukawa H, Watanabe T, A molecular dynamics simulation study on polymer networks of end-linked flexible or rigid chains JOURNAL OF CHEMICAL PHYSICS 127 (16), (2008)
  27. N. Arai, K. Yasuoka and Y. Masubuchi, Spontaneous self-assembly process for threadlike micelles J. Chem. Phys. 126 (24), 244905-7 (2007).
  28. K. Furuichi, C. Nonomura, Y. Masubuchi, G. Ianniruberto, F. Greco and G. Marrucci, Primitive chain network simulations of damping functions for shear, uniaxial, biaxial and planar deformations NIHON REOROJI GAKKAISHI 35 (2), 73-77 (2007).
  29. N. Hosono, H. Furukawa, Y. Masubuchi, T. Watanabe, K. Horie, Photochemical control of network structure in gels and photo-induced changes in their viscoelastic properties Colloid Surf. B-Biointerfaces 56 (1-2), 285-289 (2007).
  30. Li, GZ; Matsuda, T; Nishioka, A; Liang, KW; Masubuchi, Y; Koyama, K; Pittman, CU, Rheological properties of poly(methyl methacrylate)/rigid ladderlike polyphenylsilsesquioxane blends JOURNAL OF APPLIED POLYMER SCIENCE 104, 352 (2007).
  31. Horio, K; Masubuchi, Y, Pre-averaged sampling on the entanglement kinetics for polymer dynamics MACROMOLECULAR SYMPOSIA 242, 140 (2006).
  32. Masubuchi, Y; Ianniruberto, G; Greco, F; Marrucci, G, Primitive chain network model for block copolymers JOURNAL OF NON-CRYSTALLINE SOLIDS 352, 5001 (2006).
  33. Masubuchi, Y; Ianniruberto, G; Greco, F; Marrucci, G, Primitive chain network simulations for branched polymers RHEOLOGICA ACTA 46, 297 (2006).
  34. Nishioka, A; Minegishi, A; Takahashi, T; Koda, T; Masubuchi, Y; Takimoto, J; Koyama, K, The influence of heat treatment on uniaxial elongational flow behavior of PS/SBS blends NIHON REOROJI GAKKAISHI 34, 189 (2006).
  35. Masubuchi, Y; Ianniruberto, G; Marrucci, G; Greco, F, Biased hooking for primitive chain network simulations of block copolymers KOREA-AUSTRALIA RHEOLOGY JOURNAL 18, 99 (2006).
  36. Minegishi, A; Nishioka, A; Takahashi, T; Masubuchi, Y; Takimoto, J; Koyama, K, A novel elongational rheology control of PS by SBS and dicumyl peroxide NIHON REOROJI GAKKAISHI 33, 141 (2005).
  37. Yaoita, T; Isaki, T; Masubuchi, Y; Watanabe, H; Ianniruberto, G; Greco, F; Marrucci, G, Highly entangled polymer primitive chain network simulations based on dynamic tube dilation (vol 121, pg 12650, 2004) JOURNAL OF CHEMICAL PHYSICS 122, (2005).
  38. Li, GZ; Matsuda, T; Nishioka, A; Miyata, K; Masubuchi, Y; Koyama, K; Pittman, CU, Rheological properties of polystyrene blends with rigid ladderlike polyphenylsilsesquioxane JOURNAL OF APPLIED POLYMER SCIENCE 96, 706 (2005).
  39. Yaoita, T; Isaki, T; Masubuchi, Y; Watanabe, H; Ianniruberto, G; Greco, F; Marrucci, G, Highly entangled polymer primitive chain network simulations based on dynamic tube dilation JOURNAL OF CHEMICAL PHYSICS 121, 12650 (2004).
  40. Masubuchi, Y; Watanabe, H; Ianniruberto, G; Greco, F; Marrucci, G, Primitive chain network simulations on dielectric relaxation of linear polymers under shear flow NIHON REOROJI GAKKAISHI 32, 197 (2004).
  41. Masubuchi, Y; Ianniruberto, G; Greco, F; Marrucci, G, Molecular simulations of the long-time behaviour of entangled polymeric liquids by the primitive chain network model MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING 12, S91 (2004).
  42. Masubuchi, Y; Ianniruberto, G; Greco, F; Marrucci, G, Entanglement molecular weight and frequency response of sliplink networks JOURNAL OF CHEMICAL PHYSICS 119, 6925 (2003).
  43. Watanabe, K; Suzuki, T; Masubuchi, Y; Taniguchi, T; Takimoto, J; Koyama, K, Crystallization kinetics of polypropylene under high pressure and steady shear flow POLYMER 44, 5843 (2003).
  44. Kurose, T; Takahashi, T; Nishioka, A; Masubuchi, Y; Takimoto, J; Koyama, K, The effect of pre-thermal history on shear and uniaxial elongational viscosity of a tetrafluoroethylene/hexafluoropropylene copolymer near the crystal melting transition RHEOLOGICA ACTA 42, 338 (2003).
  45. Nishioka, A; Takahashi, T; Masubuchi, Y; Takimoto, J; Koyama, K, Rheological characterization of ionic bonding in ethylene-ionomer melts with low neutralization degree JOURNAL OF RHEOLOGY 46, 1325 (2002).
  46. Watanabe, K; Nagatake, W; Takahashi, T; Masubuchi, Y; Takimoto, J; Koyama, K, Direct observation of polymer crystallization process under shear by a shear flow observation system POLYMER TESTING 22, 101 (2003).
  47. Yamamoto, S; Masubuchi, Y; Takimoto, J, Reversibility of the ER effect in immiscible liquid blends INTERNATIONAL JOURNAL OF MODERN PHYSICS B 16, 2468 (2002).
  48. Riha, P; Takimoto, J; Masubuchi, Y; Koyama, K, The contribution of columnar structure to the stress in Er polymeric blends in a shear flow INTERNATIONAL JOURNAL OF MODERN PHYSICS B 16, 2542 (2002).
  49. Nishioka, A; Takahashi, T; Masubuchi, Y; Takimoto, J; Koyama, K, Stress relaxation of polymer melts in biaxial and planar elongations MATERIALS SCIENCE RESEARCH INTERNATIONAL 4, 121 (1998).
  50. Masubuchi, Y; Matsuoka, H; Takimoto, J; Koyama, K; Ohta, Y, Measurement of Young's modulus and Poisson's ratio of polymers under high pressure MATERIALS SCIENCE RESEARCH INTERNATIONAL 4, 223 (1998).
  51. Masubuchi, Y; Nishioka, A; Takimoto, JI; Koyama, K, Simulation study on molecular relaxation in ionomer melts POLYMER 43, 239 (2002).
  52. Sugimoto, M; Masubuchi, Y; Takimoto, J; Koyama, K, Melt rheology of polypropylene containing small amounts of high molecular weight chain. I. Shear flow JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 39, 2692 (2001).
  53. Masubuchi, Y; Takimoto, JI; Koyama, K; Ianniruberto, G; Marrucci, G; Greco, F, Brownian simulations of a network of reptating primitive chains JOURNAL OF CHEMICAL PHYSICS 115, 4387 (2001).
  54. Sugimoto, M; Masubuchi, Y; Takimoto, J; Koyama, K, Melt rheology of polypropylene containing small amounts of high-molecular-weight chain. 2. Uniaxial and biaxial extensional flow MACROMOLECULES 34, 6056 (2001).
  55. Minegishi, A; Nishioka, A; Takahashi, T; Masubuchi, Y; Takimoto, J; Koyama, K, Uniaxial elongational viscosity of PS/a small amount of UHMW-PS blends RHEOLOGICA ACTA 40, 329 (2001).
  56. Nishioka, A; Takahashi, T; Masubuchi, Y; Takimoto, J; Koyama, K, Melt rheology of ethylene ionomers blended with a small-molecule acid POLYMER 42, 7907 (2001).
  57. Kato, Y; Masubuchi, Y; Takimoto, JI; Koyama, K, The mechanism of ER effect induced by attaching flocked fabrics on electrodes INTERNATIONAL JOURNAL OF MODERN PHYSICS B 15, 767 (2001).
  58. Ogawa, C; Masubuchi, Y; Takimoto, JI; Koyama, K, Domain structure and MR effect of ferrofluid emulsion INTERNATIONAL JOURNAL OF MODERN PHYSICS B 15, 859 (2001).
  59. Iwatsuki, H; Gohko, N; Kimura, H; Masubuchi, Y; Takimoto, JI; Koyama, K, Molecular orientation and electrohydrodynamic flow in homogeneous ER fluids INTERNATIONAL JOURNAL OF MODERN PHYSICS B 15, 973 (2001).
  60. Kimura, H; Aikawa, K; Masubuchi, Y; Takimoto, JI; Koyama, K, Electrically induced viscosity change in immiscible liquid blend INTERNATIONAL JOURNAL OF MODERN PHYSICS B 15, 1062 (2001).
  61. Minegishi, A; Takakashi, T; Nishioka, A; Masubuchi, Y; Takimoto, J; Koyama, K, Uniaxial elongational flow behaviour of SBS block copolymer melts treated at high temperature - The correlation of crosslinking and strain-hardening NIHON REOROJI GAKKAISHI 29, 61 (2001).
  62. Masubuchi, Y; Watanabe, K; Nagatake, W; Takimoto, JI; Koyama, K, Thermal analysis of shear induced crystallization by the shear flow thermal rheometer: isothermal crystallization of polypropylene POLYMER 42, 5023 (2001).
  63. Yanagida, H; Masubuchi, Y; Minagawa, K; Takimoto, J; Ogata, T; Koyama, K, Dependence of sonochemical luminescence on various sound fields ULTRASONICS 38, 671 (2000).
  64. Nishioka, A; Takahashi, T; Masubuchi, Y; Takimoto, J; Koyama, K, Description of uniaxial, biaxial, and planar elongational viscosities of polystyrene melt by the K-BKZ model JOURNAL OF NON-NEWTONIAN FLUID MECHANICS 89, 287 (2000).
  65. Nagatake, W; Takahashi, T; Masubuchi, Y; Takimoto, JI; Koyama, K, Development of sheer flow thermal rheometer for direct measurement of crystallization fraction of polymer melts under shear deformation POLYMER 41, 523 (2000).
  66. Minagawa, K; Okamura, H; Masuda, S; Tanaka, M; Gohko, N; Masubuchi, Y; Takimoto, J; Koyama, K; Uemura, T, Preparation and property of model homogeneous ER fluids having urethane groups INTERNATIONAL JOURNAL OF MODERN PHYSICS B 13, 1998 (1999).
  67. Kimura, H; Aikawa, K; Masubuchi, Y; Takimoto, J; Koyama, K; Uemura, T, Electrically induced phase inversion in polyurethane/dimethylsiloxane blend INTERNATIONAL JOURNAL OF MODERN PHYSICS B 13, 2011 (1999).
  68. Takimoto, J; Takeda, H; Masubuchi, Y; Koyama, K, Stress rectification in MR fluids under tilted magnetic field INTERNATIONAL JOURNAL OF MODERN PHYSICS B 13, 2028 (1999).
  69. Yanagida, H; Masubuchi, Y; Minagawa, K; Takimoto, J; Koyama, K, Effect of ultrasound frequency on sonochemical luminescence under well-determined sound pressure JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS 38, 3103 (1999).
  70. Riha, P; Kimura, H; Aikawa, K; Masubuchi, Y; Takimoto, J; Koyama, K, The shear-flow properties of electro-rheological liquid polymeric blends JOURNAL OF NON-NEWTONIAN FLUID MECHANICS 85, 249 (1999).
  71. Sugimoto, M; Tanaka, T; Masubuchi, Y; Takimoto, J; Koyama, K, Effect of chain structure on the melt rheology of modified polypropylene JOURNAL OF APPLIED POLYMER SCIENCE 73, 1493 (1999).
  72. Takahashi, T; Nishioka, A; Masubuchi, Y; Takimoto, J; Koyama, K, A systematic description by BKZ model of strain hardening or softening in uniaxial elongation of polymer melts JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS B38, 289 (1999).
  73. Sugimoto, M; Masubuchi, Y; Takimoto, J; Koyama, K, Melt strength and extrudate swell of high-melt-strength polypropylene NIHON REOROJI GAKKAISHI 27, 67 (1999).
  74. Masubuchi, Y; Takimoto, JI; Koyama, K, Simulation study on effect of polymer entanglement on the strain hardening MOLECULAR SIMULATION 21, 257 (1999).
  75. Yanagida, H; Masubuchi, Y; Minagawa, K; Ogata, T; Takimoto, J; Koyama, K, A reaction kinetics model of water sonolysis in the presence of a spin-trap ULTRASONICS SONOCHEMISTRY 5, 133 (1999).
  76. Kimura, H; Aikawa, K; Masubuchi, Y; Takimoto, J; Koyama, K; Uemura, T, 'Positive' and 'negative' electro-rheological effect of liquid blends JOURNAL OF NON-NEWTONIAN FLUID MECHANICS 76, 199 (1998).
  77. Kimura, H; Aikawa, K; Masubuchi, Y; Takimoto, J; Koyama, K; Minagawa, K, Phase structure change and ER effect in liquid crystalline polymer/dimethylsiloxane blends RHEOLOGICA ACTA 37, 54 (1998).
  78. Minegishi, A; Naka, Y; Takahashi, T; Masubuchi, Y; Takimoto, J; Koyama, K, The effect of ultrahigh molecular weight polymers on the nonlinear response in uniaxial elongational viscosity NIHON REOROJI GAKKAISHI 25, 215 (1997).
  79. Kimura, H; Aikawa, K; Masubuchi, Y; Takimoto, J; Koyama, K; Uemura, T, Electrically induced phase inversion in urethane-modified polypropylene glycol/dimethylsiloxane blend JOURNAL OF CHEMICAL PHYSICS 107, 5945 (1997).
  80. Masubuchi, Y; Oana, H; Matsumoto, M; Doi, M, Brownian dynamics simulation of biased sinusoidal field gel electrophoresis MACROMOLECULES 30, 912 (1997).
  81. Masubuchi, Y; Oana, H; Matsumoto, M; Doi, M; Yoshikawa, K, Conformational dynamics of DNA during biased sinusoidal field gel electrophoresis ELECTROPHORESIS 17, 1065 (1996).
  82. Oana, H; Masubuchi, Y; Matsumoto, M; Doi, M; Yoshikawa, K, Motion of large DNA molecules traveling from solution to gel under steady field JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 34, 1105 (1996).
  83. MASUBUCHI, Y; OANA, H; AKIYAMA, T; MATSUMOTO, M; DOI, M, DYNAMICS OF A DNA MOLECULE HANGING OVER AN OBSTACLE IN GEL-ELECTROPHORESIS JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 64, 1412 (1995).
  84. OANA, H; MASUBUCHI, Y; MATSUMOTO, M; DOI, M; MATSUZAWA, Y; YOSHIKAWA, K, PERIODIC MOTION OF LARGE DNA-MOLECULES DURING STEADY FIELD GEL-ELECTROPHORESIS MACROMOLECULES 27, 6061 (1994).
  85. MASUBUCHI, Y; OANA, H; ONO, K; MATSUMOTO, M; DOI, M; MINAGAWA, K; MATSUZAWA, Y; YOSHIKAWA, K, PERIODIC BEHAVIOR OF DNA-MOLECULES DURING STEADY FIELD GEL-ELECTROPHORESIS MACROMOLECULES 26, 5269 (1993).
  86. MINAGAWA, K; MATSUZAWA, Y; YOSHIKAWA, K; MASUBUCHI, Y; MATSUMOTO, M; DOI, M; NISHIMURA, C; MAEDA, M, CHANGE OF THE HIGHER-ORDER STRUCTURE OF DNA INDUCED BY THE COMPLEXATION WITH INTERCALATING SYNTHETIC-POLYMER, AS IS VISUALIZED BY FLUORESCENCE MICROSCOPY NUCLEIC ACIDS RESEARCH 21, 37 (1993).

Update: Apr 02,2012