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논문 기본 정보

자료유형
학술저널
저자정보
Park, Dae-Geun (Department of Chemical Engineering Korea Advanced Institute of Science and Technology) Kim, Won-Jong (Department of Chemical Engineering Korea Advanced Institute of Science and Technology) Yang, Seung-Man (Department of Chemical Engineering Korea Advanced Institute of Science and Technology)
저널정보
한국유변학회 Korea-Australia rheology journal Korea-Australia rheology journal 제12권 제3호
발행연도
2000.1
수록면
143 - 149 (7page)

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In this article, we considered shear-induced microstructure and rheological behavior of micellar solutions of cationic surfactant, cetylpyridinium chloride (CPC) in the presence of a structure-forming additive, sodium salicylate (NaSal). Shear viscosity, shear moduli and flow birefringence were measured as functions of the surfactant and additive concentrations. In the presence of NaSal, the micellar solution exhibited the non-linear rheological behavior due to the formation of supramolecular structures when the molar ratio of NaSal to CPC exceeded a certain threshold value. Flow birefringence probed the change in micelle alignment under shear flow. At low shear rates, the flow birefringence increased as the shear rate increased. On the other hand, fluctuation of flow birefringence appeared from the shear rate near the onset of shear thickening, which was caused by shear-induced coagulation or aggregation. These results were confirmed by the SEM images of in situ gelified micelle structure through sol-gel route.

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