研究者詳細 - 川角　昌弥

論文 - 川角　昌弥

分割表示 85 件中 21 - 40 件目／全件表示 >>

Study on water content of perfluorosulfonic acid ionomer membranes below water freezing point

A. Koiwai, A. Kamiya and M. Kawasumi

11 巻 ( 1 ) 頁： 587 - 587 2007年9月

Degradation of Nafion Membranes in Hydrogen Peroxide

K. Kodama, F. Miura, N. Hasegawa, M Kawasumi and Y. Morimoto

ECS Meeting Abstracts MA2005-02 巻 ( X2 - Durability and Reliability of Low-Temperature Fuel Cells and Fuel Cell Systems ) 頁： 1185 - 1185 2006年

The discovery of polymer-clay hybrids

Kawasumi M

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 42 巻 ( 4 ) 頁： 819 - 824 2004年2月

Cell performances of direct methanol fuel cells with grafted membranes

Hatanaka T, Hasegawa N, Kamiya A, Kawasumi M, Morimoto Y, Kawahara K

FUEL 81 巻 ( 17 ) 頁： 2173 - 2176 2002年12月

Polyolefin-clay hybrids based on modified polyolefins and organophilic clay

Hasegawa N., Okamoto H., Kawasumi M., Kato M., Tsukigase A., Usuki A.

Macromolecular Materials and Engineering 280-281 巻 ( 7-8 ) 頁： 76 - 79 2000年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Macromolecular Materials and Engineering

A novel and general approach to prepare polyolefin-clay hybrids by using the maleic anhydride modified polyolefins and organophilic clay during melt-blending was reported. The silicate layers of the clay were exfoliated and homogeneously dispersed at the monolayers in the hybrids. The hybrids exhibited remarkable reinforcement compared to conventional composites filled with talc which were dispersed at micrometer level.

DOI： 10.1002/1439-2054(20000801)280:1<76::aid-mame76>3.0.co;2-#

Web of Science

Scopus

Electro-Rheological Behavior of Liquid Crystal Polymers (LCPs) Dissolved in a Nematic Solvent: Dependence on Temperature and LCP Structure

Y.-C. Chiang, A. M. Jamieson, S. Campbell, T. H. Tong, N. D. Sidocky, L. C. Chien, M. Kawasumi, V. Percec

Polymer 41 巻 ( 11 ) 頁： 4127 - 4135 2000年

Preparation and mechanical properties of polystyrene-clay hybrids

Hasegawa N, Okamoto H, Kawasumi M, Usuki A

JOURNAL OF APPLIED POLYMER SCIENCE 74 巻 ( 14 ) 頁： 3359 - 3364 1999年12月

Preparation and mechanical properties of polystyrene-clay hybrids.

Hasegawa N, Okamoto H, Kawasumi M, Usuki A

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY 217 巻頁： U411 - U411 1999年3月

Liquid Crystal/Clay Mineral Composites

Masaya Kawasumi, Naoki Hasegawa, Arimitsu Usuki, Akane Okada

Applied Clay Science 15 巻 ( 1-2 ) 頁： 93 - 108 1999年

Nematic liquid crystal/clay mineral composites

Kawasumi M, Hasegawa N, Usuki A, Okada A

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS 6 巻 ( 2-3 ) 頁： 135 - 143 1998年11月

Preparation and mechanical properties of polypropylene-clay hybrids using a maleic anhydride-modified polypropylene oligomer

Hasegawa N, Kawasumi M, Kato M, Usuki A, Okada A

JOURNAL OF APPLIED POLYMER SCIENCE 67 巻 ( 1 ) 頁： 87 - 92 1998年1月

Preparation and mechanical properties of polypropylene-clay hybrids

Kawasumi M, Hasegawa N, Kato M, Usuki A, Okada A

MACROMOLECULES 30 巻 ( 20 ) 頁： 6333 - 6338 1997年10月

Effect of Molecular Architecture on the Electrorheological Behavior of Liquid Crystal Polymers in Nematic Solvents

Y.-C. Chiang, A. M. Jamieson, S. Campbell, Y. Lin, N. O’Sidocky, L.-C. Chien, M. Kawasumi, V. Percec

Rheologica Acta 36 巻 ( 5 ) 頁： 505 - 512 1997年

Electrorheological Behavior of Main-Chain Liquid Crystal Polymers Dissolved in Nematic Solvents

Y.-C. Chiang, A. M. Jamieson, M. Kawasumi, V. Percec

Macromolecules 30 巻 ( 7 ) 頁： 992 - 1996 1997年

Novel memory effect found in nematic liquid crystal/ fine particle system

Kawasumi M., Hasegawa N., Usuki A., Okada A.

Liquid Crystals 21 巻 ( 6 ) 頁： 769 - 776 1996年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Liquid Crystals

Novel liquid crystalline composites composed of a nematic two-frequency-addressing liquid crystal and organized clay mineral (about 1 wt %) have been prepared. The particles of clay mineral were dispersed homogeneously in the liquid crystal. The composite cells became transparent within 50ms when a 60 Hz electric field was applied. The transparent state was maintained after the field was switched off. It transformed into a turbid light scattering state by applying 1.5kHz electric field which caused dynamic scattering in the cell. The light transmittance of both memory states did not change after 20 h without the electric field. © 2006 Taylor & Francis.

DOI： 10.1080/02678299608032892

Web of Science

Scopus

メモリ性PDLCの電場二周波駆動による可逆的光スイッチング

長谷川直樹, 川角昌弥, 臼杵有光, 岡田茜

液晶討論会講演予稿集 22 巻 ( 0 ) 頁： 399 - 400 1996年

記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）出版者・発行元：一般社団法人日本液晶学会

A memory type PDLC have been prepared by sandwiching a mixture of two-frequency-addressing liquid crystals and acrylate monomers with hydoroxy group between two glass substrates with ITO electrodes followed by the UV irradiation. This PDLC can be electrically switched between the transparent state and the light scattering state, which are maintained over months without electric field. This PDLC exhibited a polymer ball morphology according to SEM observation.

DOI： 10.11538/ekitouyokou.22.0_399

CiNii Research

液晶/微粒子複合系におけるメモリ性電気光学効果の支配因子

川角昌弥, 長谷川直樹, 臼杵有光, 岡田茜

液晶討論会講演予稿集 22 巻 ( 0 ) 頁： 397 - 398 1996年

記述言語：日本語掲載種別：研究論文（研究会，シンポジウム資料等）出版者・発行元：一般社団法人日本液晶学会

The novel liquid crystalline composites cell based on a nematic two-frequency-driving liquid crystal and organized clay exhibited reversible and bistable electro-optic effects between the transparent and light scattering states. In this paper, the factors affecting the electro-optic effect of the composites were investigated. The wettability of the liquid crystal on the organized clay strongly affected to their memory capability. The memory effect decreased drastically with decreasing the clay content in the composites with clay content below 1 wt.%. Not only the composites themselves but also the treatment of the substrates affected to the electro-optic effect. The treatment for the homogeneous alignment gave the better memory effect for the transparent state.

DOI： 10.11538/ekitouyokou.22.0_397

CiNii Research

大学大学院における高分子教育

岡田守, 板垣秀幸, 伊藤浩一, 川上雄資, カートハウスオラフ, 川角昌弥, 金仁華

高分子 45 巻 ( 10 ) 頁： 729 - 735 1996年

Liquid crystalline composite based on a clay mineral

Kawasumi M, Usuki A, Okada A, Kurauchi T

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS 281 巻頁： 91 - 103 1996年

Reversible Electro-Optical Switching of a Memory Type PDLC Memory Using Two-Frequency-Addressing Liquid Crystals

Naoki Hasegawa, Masaya Kawasumi, Arimitsu Usuki, Akane Okada

Liquid Crystals 21 巻 ( 5 ) 頁： 765 - 766 1996年

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