소각 산란 분석기법을 활용한 양친성 블록공중합체의 상변화 및 나노구조체 응용연구 = A Study on The Phase Behavior of Amphiphilic Block Copolymer and Nanostructure Using Small-Angle Scattering Analysis

다국어 초록 (Multilingual Abstract)

Amphiphilic block copolymers have garnered significant attention due to their ability to self-assemble into a diverse range of nanostructures in selective solvents, making them ideal candidates for applications in drug delivery, templating, and nanoreactors. Understanding their phase behavior under varying environmental conditions is essential for the precise control of these morphologies. This study aims to investigate the phase transitions and nanostructure evolution of amphiphilic block copolymers using small-angle scattering techniques.
Small-angle neutron scattering (SANS) were employed as the primary characterization tools to probe the internal structure and morphological transitions at the nanoscale. By systematically varying parameters such as polymer concentration, ratio, and temperature, we mapped the phase behavior and identified key morphological transitions including micellar formation from sphere to vesicle phases. The phase behavior was interpreted using form factor analysis, providing quantitative insight into core radius, shell thickness, length, polydispersity, and relative fraction in mixed phase.
The findings underscore the sensitivity of block copolymer nanostructure to subtle changes in external stimuli and demonstrate the power of small-angle scattering in elucidating self-assembly pathways. This study contributes to the fundamental understanding of soft matter physics and may inform the design of functional nanomaterials with tailored architectures.

목차 (Table of Contents)

• Chapter 1. Introduction 1
• 1.1. Overview 1
• 1.2. Objective and Scope 2
• Chapter 2. Background 5
• 2.1. Amphiphilic Molecule 5
• 2.1.1. Polymers 5
• 2.1.2. Surfactants 6
• 2.1.3. Self-assembly of Amphiphilic Molecules in aqueous solution 8
• 2.2. Small-Angle Scattering Technique 19
• 2.2.1. Small-angle Neutron Scattering 19
• 2.2.2. Small-angle X-ray Scattering 21
• 2.2.3. Basic Theory 22
• Chapter 3. Phase Behavior of Amphiphilic Block Copolymers 35
• 3.1. P65-PE6200, P85-PE6200 system 35
• 3.1.1. Introduction 35
• 3.1.2. Experimental Section 37
• 3.1.3. Results and Discussion 38
• 3.1.4. Conclusion 41
• 3.2. P(EO-AGE)(2K-2K)-P(EO-AGE)(0.75K-2K) system 54
• 3.2.1. Introduction 54
• 3.2.2. Experimental Section 55
• 3.2.3. Results and Discussion 58
• 3.2.4. Conclusion 64
• Chapter 4. Conclusion 88
• References 90
• Publications 104
• 요약(국문초록) 105