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ABSTRACT

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I. 서론 11

II. 이론적 배경 14

1. 전자종이(전기영동디스플레이)구현을 위한 기술적 접근방식 14

2. 전기영동의 이론적 배경 29

3. 마이크로캡슐의 설계개념 33

4. 전도성고분자 35

5. Microcapsule의 정의 39

III. 실험 47

1. 시약 47

2. 실험방법 48

가. 제조방법 48

나. Electrophoresis Microcapsule의 형태 및 성질 분석 49

IV. 연구결과 및 고찰 50

1. 폴리아닐린을 심물질로 사용한 마이크로캡슐 50

2. 도전성고분자와 마이크로캡슐의 IR Spectra 68

3. 도전성고분자와 마이크로캡슐의 TGA 분석결과 70

V. 결론 72

참고문헌 73

감사의 글 78

List of tables

Table 1. Various electro papers and their research centers 13

Table 2. Technical process methods for preparation of E-paper 16

Table 3. List of chemical and mechanical encapsulation process 40

Table 4. Microcapsule size distribution at different agitation rates. 54

Table 5. Size of the microcapsule at different agitation rates. 55

Table 6. Size of the microcapsule as a function on bloom number of gelatin. 61

List of figures

Fig. 1. Schematic representation of twisted bischromal ball display system by Gyricon 18

Fig. 2. The operation principles of microcapsules 20

Fig. 3. The structure of micro-cup 21

Fig. 4. Kent display reflect liquid crystal structure and product 22

Fig. 5. Three kind condition in a cholesterol liquid crystal display pixel 23

Fig. 6. A principle of an electro wetting display and pixel picture 25

Fig. 7. Electro wetting Display of Philips Research Lab 26

Fig. 8. The mark principle of PNLCD 28

Fig. 9. Electrical double layer at solid-liquid interface 29

Fig. 10. The ion cloud and the slip plane 30

Fig. 11. The relationship between particle dispersion and aggregation… 30

Fig. 12. Schematic representation of microcapsule system 33

Fig. 13. Schematic flow diagram of encapsulation process based on complex coacervation 41

Fig. 14. Schematic illustration of an interfacial reation frequently… 42

Fig. 15. Schematic illustration of an interfacial reation frequently used… 44

Fig. 16. Schematic flow diagram of encapsulation process based… 45

Fig. 17. Structure of Polyaniline-DBSA 51

Fig. 18. Effect of the stirring speed on the mean diameter of the… 52

Fig. 19. Size distribution of the microcapsules 53

Fig. 20. SEM photograph of electrophoretic microcapsule prepared… 56

Fig. 21. Optical microscopy image of electrophoretic microcapsule… 57

Fig. 22. SEM photograph of PA/MF microcapsule as a function of stirring rates… 58

Fig. 23. SEM photograph of PA/MF microcapsule at different… 59

Fig. 24. Optical micrographs of PA/MF microcapsule prepared at different agitation rates 60

Fig. 25. SEM photograph of the PA/gelatin/SMA microcapsule… 62

Fig. 26. SEM photograph of the PA/gelatin/SMA microcapsule… 63

Fig. 27. SEM photographs and optical micrographs of the… 64

Fig. 28. SEM photograph of the PA/gelatin/SMA microcapsule… 65

Fig. 29. Size distribution of the microcapsule 66

Fig. 30. Optical micrographs of PA/MF microcapsule prepared at different… 67

Fig. 31. Mechanism for polymerization of melanin-formaldehyde resin 68

Fig. 32. FT-IR spectra of PANI 69

Fig. 33. FT-IR spectra of PANI-microcapsule 69

Fig. 34. TGA diagram of PANI 71

Fig. 35. TGA diagram of MCPA 71