Faculty Profiles - MASUBUCHI Yuichi

Papers - MASUBUCHI Yuichi

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Strain-hardening property of polystyrene(PS) ultrahigh molecular weight(UHMW)-PS blends Reviewed International journal

Minegishi A, Nishioka A, Takahashi T, Masubuchi Y, Takimoto J, Koyama K

SLOW DYNAMICS IN COMPLEX SYSTEMS Vol. 469 page： 649-650 1999

Electrorheological effect in liquid blends Reviewed International journal

Kimura H, Aikawa K, Masubuchi Y, Takimoto J, Koyama K

SLOW DYNAMICS IN COMPLEX SYSTEMS Vol. 469 page： 152-153 1999

A systematic description by BKZ model of strain hardening or softening in uniaxial elongation of polymer melts Reviewed International journal

Takahashi T, Nishioka A, Masubuchi Y, Takimoto J, Koyama K

JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS Vol. B38 ( 3 ) page： 289-304 1999

Adaptability of K-BKZ Type Constitutive Equations for Uniaxial, Biaxial and Planar Elongational Viscosities of LDPE Melt. Reviewed

NISHIOKA Akihiro, TAKAHASHI Tatsuhiro, MASUBUCHI Yuichi, TAKIMOTO Jun-ichi, KOYAMA Kiyohito

Seikei-Kakou Vol. 11 ( 6 ) page： 517 - 526 1999

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society of Polymer Processing

Measurements of uniaxial, biaxial, and planar elongational viscosity and step stress relaxation of a low density polyethylene (LDPE) melt were carried out. The description of experimental uniaxial, biaxial, and planar elongational viscosities results by the Kaye-Bernstein-Kearsley-Zapas (K-BKZ) constitutive equation was examined. Three types of damping function forms, Wagner-Demarmels (WD) model, Papanastasiou-Scriven-Macosko (PSM) model, and Luo-Tanner (LT) model, have been proposed in the K-BKZ constitutive equation. These three damping function forms were examined to see which was able to describe the experimental shear, biaxial, and planar damping functions. The experimental shear and biaxial damping functions were described by the LT and PSM models better than the WD model, however, the experimental planar damping function was not described well by any of the three models. After estimating the best parameters in each model by fitting the three experimental damping functions, the uniaxial, biaxial, and planar elongational viscosity was calculated by the estimated parameters. The uniaxial elongational viscosity was predicted best by the LT model, then by the WD, and PSM models. For biaxial and planar elongational viscosity, none of the three models predicted well, thus the lack of suitability of the biaxial and planar elongational viscosity to the K-BKZ model was suggested.

DOI： 10.4325/seikeikakou.11.517

Systematic description by BKZ model of strain hardening or softening in uniaxial elongation of polymer melts Reviewed International journal

Takahashi T., Nishioka A., Masubuchi Y., Takimoto J., Koyama K.

Journal of Macromolecular Science - Physics Vol. 38 1999

Simulation Ssudy on Effect of Polymer Entanglement on the Strain Hardening Reviewed International journal

Masubuchi Y., Takimoto J., Koyama K.

Molecular Simulation Vol. 21 ( 5-6 ) page： 257 - 269 1999

Measurement of biaxial elongational viscosity of polymer melts using lubricated squeezing flow method Reviewed

Nishioka A., Takagi Y., Takahashi T., Masubuchi Y., Takimoto J., Koyama K.

Zairyo/Journal of the Society of Materials Science, Japan Vol. 47 ( 12 ) page： 1296 - 1300 1998.12

充填系高分子溶融体の一軸伸長下での歪み硬化特性と内部変形 Reviewed

高橋辰宏, 中島広和, 増淵雄一, 滝本淳一, 小山清人

繊維学会誌 Vol. 54 ( 10 ) page： 538 - 543 1998.10

Measurement of Young's modulus and Poisson's ratio of polymers under high pressure Invited Reviewed International journal

Masubuchi Y, Matsuoka H, Takimoto J, Koyama K, Ohta Y

MATERIALS SCIENCE RESEARCH INTERNATIONAL Vol. 4 ( 3 ) page： 223-226 1998.9

Stress relaxation of polymer melts in biaxial and planar elongations Reviewed International journal

Nishioka A, Takahashi T, Masubuchi Y, Takimoto J, Koyama K

MATERIALS SCIENCE RESEARCH INTERNATIONAL Vol. 4 ( 2 ) page： 121-123 1998.6

'Positive' and 'negative' electro-rheological effect of liquid blends Reviewed International journal

Kimura H, Aikawa K, Masubuchi Y, Takimoto J, Koyama K, Uemura T

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS Vol. 76 ( 1-3 ) page： 199-211 1998.4

綿布の吸水性に対する圧力と仕上処理剤の影響 Reviewed

樋口才二, 鈴木淳, 久保田稔, 増渕雄一, 瀧本淳一, 小山清人

繊維学会誌 Vol. 54 ( 3 ) page： 152 - 158 1998.3

Phase structure change and ER effect in liquid crystalline polymer/dimethylsiloxane blends Reviewed International journal

Kimura H, Aikawa K, Masubuchi Y, Takimoto J, Koyama K, Minagawa K

RHEOLOGICA ACTA Vol. 37 ( 1 ) page： 54-60 1998.2

Electrically induced phase inversion in urethane-modified polypropylene glycol/dimethylsiloxane blend Reviewed International journal

Kimura H, Aikawa K, Masubuchi Y, Takimoto J, Koyama K, Uemura T

JOURNAL OF CHEMICAL PHYSICS Vol. 107 ( 15 ) page： 5945-5947 1997.10

Brownian dynamics simulation of biased sinusoidal field gel electrophoresis Reviewed International journal

Masubuchi Y, Oana H, Matsumoto M, Doi M

MACROMOLECULES Vol. 30 ( 4 ) page： 912-918 1997.2

The effect of ultrahigh molecular weight polymers on the nonlinear response in uniaxial elongational viscosity Reviewed International journal

Minegishi A, Naka Y, Takahashi T, Masubuchi Y, Takimoto J, Koyama K

NIHON REOROJI GAKKAISHI Vol. 25 ( 4 ) page： 215-216 1997

Conformational dynamics of DNA during biased sinusoidal field gel electrophoresis Reviewed International journal

Masubuchi Y, Oana H, Matsumoto M, Doi M, Yoshikawa K

ELECTROPHORESIS Vol. 17 ( 6 ) page： 1065-1074 1996.6

Motion of large DNA molecules traveling from solution to gel under steady field Reviewed International journal

Oana H, Masubuchi Y, Matsumoto M, Doi M, Yoshikawa K

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS Vol. 34 ( 6 ) page： 1105-1111 1996.4

DYNAMICS OF A DNA MOLECULE HANGING OVER AN OBSTACLE IN GEL-ELECTROPHORESIS Reviewed International journal

MASUBUCHI Y, OANA H, AKIYAMA T, MATSUMOTO M, DOI M

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN Vol. 64 ( 4 ) page： 1412-1420 1995.4

PERIODIC MOTION OF LARGE DNA-MOLECULES DURING STEADY FIELD GEL-ELECTROPHORESIS Reviewed International journal

OANA H, MASUBUCHI Y, MATSUMOTO M, DOI M, MATSUZAWA Y, YOSHIKAWA K

MACROMOLECULES Vol. 27 ( 21 ) page： 6061-6067 1994.10

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