| 학회 | 한국공업화학회 |
| 학술대회 | 2015년 봄 (04/29 ~ 05/01, BEXCO (부산)) |
| 권호 | 19권 1호 |
| 발표분야 | (콜로이드계면화학) 나노소재 기술에 있어서 콜로이드 공학의 응용 (중앙대 임경희 교수 정년 퇴임 기념) |
| 제목 | A SANS Study for Changes in Micelle Shapes |
| 초록 | Micelles formed above critical micelle concentration (CMC) in surfactant aqueous solutions are homogeneous and transparent. Their existence and sizes and shapes, in particular, are hardly observed by electron microscopy. SANS as a powerful probe of micelle provide insight into the sizes and structures of micelles in solution. The sizes and structures of micelles of cationic octadecyl trimethyl ammonium chloride (OTAC) and of anionic ammonium dodecyl sulfate (ADS) surfactants were investigated with SANS. For aqueous OTAC solutions, SANS data show that the micelles become larger and the transition in micellar shape from sphere to oblate ellipsoid takes place. For aqueous ADS solutions, SANS data point to the micelle structure of sphere with core and shell but this time up to ADS 100 mM. Above this concentration the spherical micelles changes to oblate ellipsoid with core and hydrated shell. |
| 저자 | 임경희1, 강계홍2 |
| 소속 | 1중앙대, 2나우코스 |
| 키워드 | micelle; size; shape; micelle shape transition concentration(MSTC) |
