| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 가을 (10/11 ~ 10/13, 제주컨벤션센터) |
| 권호 |
42권 2호 |
| 발표분야 |
Celebration of the 50th Anniversary of Macromolecules(영어발표) |
| 제목 |
Shaping Block Copolymer Particles |
| 초록 |
Shape and internal morphology of polymeric particles are of great importance for their unique physical properties. I will talk about two approaches to control the shape of BCP particles. First, we report that evaporation rate of solvent (toluene) from uniform-sized emulsions containing polystyrene-b-polybutadiene (PS-b-PB) determines the shape and internal nanostructure of the BCP particles. A distinct morphological transition of the particles from ellipsoids with striped lamellae to onion-like spheres was observed as the evaporation rate was decreased. In the case of rapid evaporation, large differences between the toluene diffusivity in PS and in PB induced BCP to align perpendicular to the particle surface. By contrast, thermodynamic effects lead BCP to assemble parallel to the particle surface at slow evaporation. Second, I will discuss the design of nanoparticle surfactants for controlling the interfacial tension of the emulsion droplets and tailoring the shape of BCP particles. |
| 저자 |
김범준 |
| 소속 |
한국과학기술원 |
| 키워드 |
Block Copolymer; Emulsion; Interfacial Tension
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| E-Mail |
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