단계중합법에 의한 Core-Shell 구조의 Acrylic Composite Particle 제조에 관한 연구 = A Study on the Preparation of Acrylic Composite Particle with Core-Shell Structure by Sequential Emulsion Polymerization

다국어 초록 (Multilingual Abstract)

다국어 초록 (Multilingual Abstract)

Core-shell composite latex has the both properties of core and shell components. This unique behavior of core-shell composite latex can be used in many industrial fields. However, in preparation of core-shell composite latex, several unexpected are observed, such as, particle coagulation, low degree of polymerization, and formation of new particles during shell polymerization. To solve the disadvantages, we study the effect of initiator concentrations, surfactant concentrations, and reaction temperature on the core-shell structure of Polymethyl methacrylate/polystyrene and polystyren/polymethyl methacrylate. Particle size and particle size distribution were measured by using Particle Size Analyzer, and the morphology of the core-shell composite latex was determined by using Transmission Electron Microscope. Glass temperature was also measured by using Differential Scanning Calorimeter. To identify the core-shell structure, pH of the two composite latex solutions were measured.

목차 (Table of Contents)

• Ⅰ. 서론
• Ⅱ. 실험
• 1. 시약 및 실험장치
• 2. 중합
• 3. 분석
• Ⅲ. 결과 및 고찰
• 1. 개시제 농도와 종류에 의한 영향
• 2. 유화제의 영향
• 3. 입자 성장
• 4. Core-shell 구조확인
• 4.1. 알카리 가수분해
• 4.2. 유리 전이온도
• 4.3. 최저조막 형성온도
• 4.4. TEM
• Ⅳ. 결론