| Project/Area Number |
11450294
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| Research Category |
Grant-in-Aid for Scientific Research (B).
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
化学工学一般
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| Research Institution | KAGOSHIMA UNIVERSITY |
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Principal Investigator |
HATATE Yasuo Kagoshima Univ., Fac.of Eng., Professor, 工学部, 教授 (00038051)
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| Co-Investigator(Kenkyū-buntansha) |
ITAHARA Toshio Kagoshima Univ., Fac.of Eng., Professor, 工学部, 教授 (40112429)
YOSHIZAWA Hidekazu Okayama Univ., Fac.of Environmental Sci. & Tech., Associate Professor, 環境理工学部, 助教授 (20244262)
UEMURA Yoshimitsu Kagoshima Univ., Fac.of Engineering, Associate of Professor, 工学部, 助教授 (60160222)
AIKOH Ryoko Kagoshima Univ., Fac.of Engineering, Technical Official, ministry of education, 工学部, 教務職員 (50244265)
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥8,300,000 (Direct Cost: ¥8,300,000)
Fiscal Year 2000: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1999: ¥5,900,000 (Direct Cost: ¥5,900,000)
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| Keywords | Ferroelectric liquid crystalline monomer / Polymeric microsphere / Thermo response / Liquid crystalline polymer / Electro-optical response / Microcapsule / Functionalized polymer / Phase transition behavior |
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| Research Abstract |
We synthesized a ferroelectric liquid crystalline monomer (4- [4'- (7-octeneloxy) benzoyloxy] benzoate-2methylbutylester, OBBM) possessing both carboxyl p-benzolxybenzoate and carboxyl (s) - (-) -2methylbutylester as a mesogenic group in its side chain. The liquid crystalline and styrene monomers were employed to make matrices of microspheres prepared by dispersion, suspension, or emulsion polymerization. In this study, we investigated in detail physicochemical properties, thermo responses, or electro-optical responses on the microspheres possessing liquid crystalline abilities. The ferroelectric liquid crystal monomer OBBM synthesized had a thermotropic liquid crystalline ability, two phase transition temperatures, and the Smectic C^* texture which is characteristic of the ferroelectric liquid crystalline substances. The microspheres prepared also exhibited liquid crystalline ability, and the phase transition temperatures toward the liquid crystalline segments into the microspheres prepared by copolymerizing the liquid crystalline and styrene monomers could be decreased with increasing styrene monomer. Furthermore, we found that the microspheres remarkably exhibited electro-optical responses at about 10 volt.
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