| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 가을 (11/04 ~ 11/06, 제주국제컨벤션센터(ICCJEJU)) |
| 권호 |
19권 2호 |
| 발표분야 |
(콜로이드계면화학) 최근 연성물질 개발기술의 진보 |
| 제목 |
Continuous Generation of Bijel Microparticles, Fibers and Films Using Solvent Transfer-Induced Phase Separation (STRIPS) |
| 초록 |
Bicontinuous interfacially jammed emulsions (Bijels) are novel soft materials with potential applications in areas ranging from healthcare, cosmetics, and food to energy and diverse chemical technologies. However, their fabrication is currently limited to only two pairs of immiscible liquids with narrow temperature windows for their formation. In such systems, typical bicontinuous domain sizes are in the range of tens of micrometers, and fabrication is inefficient due to its batch-wise nature and expensive starting materials. We explore the formation of bijels by mass transfer induced ternary liquid-liquid phase separation. The use of commercially available silica nanoparticles and ionic surfactants allows us to continuously form bijel fibers and membranes with controllable morphologies and domain sizes down to only a few hundreds of nanometers. We study the dependence of fiber morphology on different control parameters such as particle and surfactant concentration. The hierarchical morphology of STRIPS bijels open avenues to new applications such as interfacial catalysis. |
| 저자 |
이대연, Kathleen J. Stebe, Nima Sharifi Mood, Martin F. Haase
|
| 소속 |
Univ. of Pennsylvania |
| 키워드 |
emulsion; colloids; interface; soft matter
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| E-Mail |
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