Faculty Profiles - MASUBUCHI Yuichi

Papers - MASUBUCHI Yuichi

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Biased hooking for primitive chain network simulations of block copolymers Invited Reviewed International coauthorship International journal

Masubuchi Y, Ianniruberto G, Marrucci G, Greco F

KOREA-AUSTRALIA RHEOLOGY JOURNAL Vol. 18 ( 2 ) page： 99-102 2006.6

Pre-averaged sampling on the entanglement kinetics for polymer dynamics Reviewed International journal

Horio Kazushi, Masubuchi Yuichi

MACROMOLECULAR SYMPOSIA Vol. 242 page： 140-145 2006

The influence of heat treatment on uniaxial elongational flow behavior of PS/SBS blends Reviewed International journal

Nishioka Akihiro, Minegishi Akinari, Takahashi Tatsuhiro, Koda Tomonori, Masubuchi Yuichi, Takimoto Jun-ichi, Koyama Kiyohito

NIHON REOROJI GAKKAISHI Vol. 34 ( 4 ) page： 189-197 2006

Highly entangled polymer primitive chain network simulations based on dynamic tube dilation (vol 121, pg 12650, 2004) Reviewed International coauthorship International journal

Yaoita T, Isaki T, Masubuchi Y, Watanabe H, Ianniruberto G, Greco F, Marrucci G

JOURNAL OF CHEMICAL PHYSICS Vol. 122 ( 20 ) page： . 2005.5

Rheological properties of polystyrene blends with rigid ladderlike polyphenylsilsesquioxane Reviewed International coauthorship International journal

Li GZ, Matsuda T, Nishioka A, Miyata K, Masubuchi Y, Koyama K, Pittman CU

JOURNAL OF APPLIED POLYMER SCIENCE Vol. 96 ( 3 ) page： 706-713 2005.5

A novel elongational rheology control of PS by SBS and dicumyl peroxide Reviewed International journal

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

NIHON REOROJI GAKKAISHI Vol. 33 ( 3 ) page： 141-144 2005

Highly entangled polymer primitive chain network simulations based on dynamic tube dilation Reviewed International coauthorship International journal

Yaoita T, Isaki T, Masubuchi Y, Watanabe H, Ianniruberto G, Greco F, Marrucci G

JOURNAL OF CHEMICAL PHYSICS Vol. 121 ( 24 ) page： 12650-12654 2004.12

Adaptive Shape Reconfiguration of a Decentralized Motile System Exploiting Molecular Dynamics and Stokesian Dynamics Methods Reviewed International journal

Shimizu M., Ishiguro A., Takahashi M., Kawakatsu T., Masubuchi Y., Doi M.

Journal of Robotics and Mechatronics Vol. 16 ( 3 ) page： 271 - 277 2004.6

Language：English Publishing type：Research paper (scientific journal) Publisher：Journal of Robotics and Mechatronics

This paper discusses a fully decentralized algorithm able to create a coherent swarm of autonomous mobile robots from the viewpoint of computational physics. To this end, we focus on Molecular Dynamics and Stokesian Dynamics, both of which are widely used to investigate many-body systems. To verify the feasibility of our approach, this idea has been implemented to a swarm of 2-D radio-connected autonomous mobile robots as a practical example. Simulation results indicate that the proposed algorithm can control the shape of the swarm appropriately based on the current situation without losing the coherence of the swarm nor exchanging global information among modules. Furthermore, we found that local interaction used to exploit Stokesian Dynamics plays an essential role to maintain the coherence of the swarm particularly in an unstructured environment.

DOI： 10.20965/jrm.2004.p0271

Scopus

Molecular simulations of the long-time behaviour of entangled polymeric liquids by the primitive chain network model Invited Reviewed International coauthorship International journal

Masubuchi Y, Ianniruberto G, Greco F, Marrucci G

MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING Vol. 12 ( 3 ) page： S91-S100 2004.5

Primitive chain network simulations on dielectric relaxation of linear polymers under shear flow Reviewed International coauthorship International journal

Masubuchi Y, Watanabe H, Ianniruberto G, Greco F, Marrucci G

NIHON REOROJI GAKKAISHI Vol. 32 ( 4 ) page： 197-202 2004

Generalization of the Ohta-Kawasaki theory for microphase separation of block copolymer melts Reviewed International journal

Uneyama T, Masubuchi Y, Takimoto JI, Doi M

SLOW DYNAMICS IN COMPLEX SYSTEMS Vol. 708 page： 446-447 2004

Primitive chain network model for entangled polymer blends Reviewed International coauthorship International journal

Masubuchi Y, Takimoto JI, Doi M, Ianniruberto G, Greco F, Marrucci G

SLOW DYNAMICS IN COMPLEX SYSTEMS Vol. 708 page： 261-262 2004

Hydrophilicity Evaluated by Measuring the Contact Angles of the Adsorption Surfaces of Dimethyldioctadecylammonium Chloride, a Poly(vinyl acetate) Emulsion and Their Mixture Reviewed

HIGUCHI Saiji, MASUBUCHI Yuichi, MITSUMATA Tetsu, TAKIMOTO Jun-ichi, KOYAMA Kiyohito, SUZUKI Atsushi

Journal of Home Economics of Japan Vol. 55 ( 2 ) page： 145 - 151 2004

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

We evaluated the hydrophilicity by measuring the contact angles of model surfaces after their adsorption of dimethyldioctadecylammonium chloride (DMDOAC), a poly (vinyl acetate) emulsion (PVAcE), and their mixture. The adsorbent surfaces used were vacuum-dried organic macromolecular agar gel containing each additive, and hydrophilic glass sheets (glass sheets) and hydrophobic polytetrafluoroethylene sheets (PTFE sheets) with each additive attached. With increasing concentration of each additive, the contact angle of the agar gel (109° without an additive) markedly decreased in a similar hyperbolic manner to about 1/3, resulting in hydrophilization. The contact angle of the hydrophilic glass sheets (33 degrees) showed a maximum value (a 2-fold increase), indicating hydrophobilization, at a low additive concentration, but this angle gradually decreased thereafter with increasing additive concentration. However, the maximum value after adding the mixture was very low, and the change in contact angle was negligible with increasing additive concentration, showing only slight hydrophibilization. The hydrophobic PTFE sheets (120 degrees) showed properties similar to those of agar gel; the contact angle decreased after adding each additive, showing hydrophilization. The degree of hydrophilization after adding the mixture was marked;the contact angle was maintained at slightly more than 20 degrees with increasing additive concentration (about 100 degrees decrease), showing very high hydrophilicity.

DOI： 10.11428/jhej1987.55.145

CiNii Research

Entanglement molecular weight and frequency response of sliplink networks Reviewed International coauthorship International journal

Masubuchi Y, Ianniruberto G, Greco F, Marrucci G

JOURNAL OF CHEMICAL PHYSICS Vol. 119 ( 13 ) page： 6925-6930 2003.10

Crystallization kinetics of polypropylene under high pressure and steady shear flow Reviewed International journal

Watanabe K, Suzuki T, Masubuchi Y, Taniguchi T, Takimoto J, Koyama K

POLYMER Vol. 44 ( 19 ) page： 5843-5849 2003.9

The effect of pre-thermal history on shear and uniaxial elongational viscosity of a tetrafluoroethylene/hexafluoropropylene copolymer near the crystal melting transition Reviewed International journal

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

RHEOLOGICA ACTA Vol. 42 ( 4 ) page： 338-344 2003.7

Direct observation of polymer crystallization process under shear by a shear flow observation system Reviewed International journal

Watanabe K, Nagatake W, Takahashi T, Masubuchi Y, Takimoto J, Koyama K

POLYMER TESTING Vol. 22 ( 1 ) page： 101-108 2003.2

Coherent swarming from local interaction by exploiting molecular dynamics and Stokesian Dynamics methods Reviewed International journal

Shimizu M, Ishiguro A, Kawakatsu T, Masubuchi Y, Doi M

IROS 2003: PROCEEDINGS OF THE 2003 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS, VOLS 1-4 page： 1614-1619 2003

Adaptive swarming by exploiting hydrodynamic interaction based on Stokesian Dynamics Method Reviewed International journal

Shimizu M, Ishiguro A, Kawakatsu T, Masubuchi Y, Doi M

SICE 2003 ANNUAL CONFERENCE, VOLS 1-3 page： 1546-1551 2003

Water Absorbency of Vacuum-Dried Agar Gels Including Dimethyldioctadecylammonium Chloride and Poly, (vinyl acetate) Emulsion Reviewed

HIGUCHI Saiji, MASUBUCHI Yuichi, MITSUMATA Tetsu, TAKIMOTO Jun-ichi, KOYAMA Kiyohito, SUZUKI Atsushi

Journal of Home Economics of Japan Vol. 54 ( 5 ) page： 343 - 349 2003

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

The time-course characteristics of the amount of water absorption in vacuum-dried agar gels containing dimethyldioctadecylammonium chloride (DMDOAC), poly (vinyl acetate) emulsion (PVAc-E) and their mixtures was measured in order to investigate the water absorbency of food model systems. Scanning electron microscopy showed the network of the gel containing DMDOAC more indistinctly than that of the gel of agar alone. The clear network of the gel mixed with PVAc-E could be observed by the adsorption of PVAc in which was coherent in several pieces. The gel containing the mixture of DMDOAC and PVAc-E showed a network with adsorbed PVAc which was coherent in several pieces and seemed to be covered by DMDOAC. The water absorption process for each gel involved in common two steps, the first absorbing water at a high rate for about 120 min, reaching an inflection point at that time, and then absorbing water at a low rate, finally almost reaching saturation, without being influenced by the presence or concentration of the additives. The initial rate and saturation weight of water absorption for the gel of agar alone were 0.85 g/g·min and 21.8 g/g, respectively. The initial rate and saturation weight of water absorption for the gel including DMDOAC and the gel including the mixture of DMDOAC and PVAc-E showed exponential and logarithmic decreases with increasing concentration. The initial rate and saturation weight of water absorption for the gel including PVAc-E showed the maximum values at 0.1 wt% and minimum values at 1.0 wt%, the characteristic changing from the exponential decrease.

DOI： 10.11428/jhej1987.54.343

CiNii Research

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