단분산 PMMA/Ag 하이브리드 입자의 제조와 입자 크기에 따른 전기 저항의 크기 변화

Title
단분산 PMMA/Ag 하이브리드 입자의 제조와 입자 크기에 따른 전기 저항의 크기 변화
Authors
김은희
Keywords
단분산pmmaag하이브리드입자의제조와입자크기에따른전기저항의크기변화
Issue Date
2012
Publisher
인하대학교
Abstract
The monodisperse poly(methylmethacrylate)(PMMA) particles having 5.05㎛ size were synthesized by the dispersion polymerization. These particles were used as core particles for PMMA/Ag hybrid particles. For the fabrication of perfect core/shell type of PMMA/Ag hybrid particles, optimum conditions for the electroless silver plating were studied. The variables on the conditions of electroless silver plating were characterized; such as the concentration of silver nitrate solution, concentration of palladium dichloride solution, plating temperature and time. As a result, the optimum condition of preparing conductive hybrid particle with soft surface morphology is as following; activation with 0.1mM PdCl2 solution followed by 1hr electroless plating under room temperature with 0.1M plating solution. Various sizes of PMMA/Ag hybrid particles with various silver contents were prepared to understand the electrical resistivity dependency on the particle size and silver content. In addition, resis
Description
1. INTRODUCTION 1 2. THEORITICAL BACKGROUND 3 2.1. Dispersion polymerization 3 2.1.1. Introduction. 3 2.1.2. History of dispersion polymerization 6 2.1.3. Definition of dispersion polymerization 6 2.1.4. Essential formulation component 7 2.1.5. Procedure. 10 2.1.6. Properties of dispersion. 11 2.1.7. Mechanism of particle formation 21 2.1.8. Kinetics 27 2.1.9. Applications. 28 2.2. Electroless plating 29 2.2.1. Introduction 29 2.2.2. Metalizing pretreatments 31 2.2.3. Electroless plating pretreatments 36 2.2.4. Electrochemistry of electroless plating 42 3. EXPERIMENTAL SECTION 50 3.1. Materials 50 3.2. Synthesis of PMMA/Ag hybrid particles 50 3.2.1. Preparation of PMMA spherical particles 50 3.2.2. Chemical treatment of surface of PMMA particles 51 3.2.3. Synthesis of PMMA/Ag hybrid particles using electroless silver plating 51 3.3. Characterizations 52 4. RESULTS AND DISCUSSION 4.1 Optimum condition for the electroless silver plating on PMMA particles 55 4.1.1. Preparation of monodisperse PMMA spherical particles using dispersion polymerization 55 4.1.2. The effect of the plating solution concentration 55 4.1.3. The effect of the activation condition 56 4.1.4. The effect of the reaction temperature 57 4.1.5. The effect of the reaction time 57 4.2 electrical resistivity of the monodisperse PMMA/Ag hybrid particles 72 4.2.1. Preparation of various sizes of monodispersed PMMA particles using dispersion polymerization 72 4.2.2. Synthesis of PMMA/Ag hybrid particles 72 4.2.3. Comparison of electrical conductivity 74 5. CONCLUSION 85 6. REFERENCES 86
URI
http://dspace.inha.ac.kr/handle/10505/23693
Appears in Collections:
College of Engineering(공과대학) > Chemical Engineering (화학공학) > Theses(화학공학 석박사 학위논문)
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