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논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 최형진
- 발행연도
- 2018
- 저작권
- 인하대학교 논문은 저작권에 의해 보호받습니다.
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Part 2. Fabrication of core-shell type polystyrene/poly(di-phenylamine) microspheres via controlled-releasing method and their electrorheology
In this study, we succeeded in coating conjugated polymer poly(diphenyl-amine) to polystyrene microspheres and the electro-rheological properties of the suspension in which the semi-conductive composite particles imparted were analyzed. The diphenylamine monomer is adsorbed onto the polystyrene surface through a π?π* stacking, and their polymer grows from the surface by added oxidant under acidic conditions. The core-shell structure of the synthesized particles was observed by SEM and TEM. The chemical structure and thermal properties were measured by FT-IR and TGA, respectively. The coated poly(diphenylamine) was dispersed in an insulating oil at a rate of 5 vol.% without additional de-doping process. The electro-rheological characteristics of the prepared ER fluid were investigated using an optical microscope and a rotational rheometer. We found the ER effect with the change of shear property and viscoelastic characteristics according to the electric field strength which is induced from the transition between conventional liquid-like state to the solid-like state.
In this study, we succeeded in coating conjugated polymer poly(diphenyl-amine) to polystyrene microspheres and the electro-rheological properties of the suspension in which the semi-conductive composite particles imparted were analyzed. The diphenylamine monomer is adsorbed onto the polystyrene surface through a π?π* stacking, and their polymer grows from the surface by added oxidant under acidic conditions. The core-shell structure of the synthesized particles was observed by SEM and TEM. The chemical structure and thermal properties were measured by FT-IR and TGA, respectively. The coated poly(diphenylamine) was dispersed in an insulating oil at a rate of 5 vol.% without additional de-doping process. The electro-rheological characteristics of the prepared ER fluid were investigated using an optical microscope and a rotational rheometer. We found the ER effect with the change of shear property and viscoelastic characteristics according to the electric field strength which is induced from the transition between conventional liquid-like state to the solid-like state.
목차
Part 1.1. INTRODUCTION 22. EXPERIMENTAL 52.1 Materials 52.2 Preparation of Poly(diphenylamine) particles and their ER fluid 52.3. Characterization 83. RESULTS AND DISCUSSION 93.1 Material characteristics 93.2 Electrorheological properties 134. CONCLUSION 345. REFERENCES 35Part 2.1. INTRODUCTION 422. EXPERIMENTAL 472.1 Materials and preparation method 472.2 Preparation of ER fluid 502.3 Characterization 503. RESULTS AND DISCUSSION 523.1 Material characteristics 523.2 Electrorheological properties 594. CONCLUSION 795. REFERENCES 80
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