- 作者: 羅金翔 ; 牟中原
- 作者服務機構: 台灣大學化學系
- 中文摘要: We investigated the aggregation behavior of rod-like micelles of sodium dodecyl sulfate (SDS) in concentrated NaCl solution by quasi-elastic light scattering (QLS) and viscosity measurement over a range of temperature(25.degree.C to 50.degree.C) and NaCl concentration. The reduced viscosity of aqueous SDS in the presence of NaCl has been measured by an Ubbelohde-type capillary viscometer. We show mean hydrodynamic radius of micelles can be determined from viscosity data. We also determined mean hydrodynamic radius using quasi-elastic light scattering. Micellar size decreases with increasing temperature, whereas it increases with increasing ionic strength. The results of viscosity and dynamic light-scattering measurements are interpreted as the extension of length of rod-like micelles. We compare viscosity and light scattering experimental results.
- 英文摘要: --
- 中文關鍵字: Micelle; Light Scattering; Viscosity; Hydrodynamic Radius; Sodium Dodecyl Sulfate (Sds); Surfactant
- 英文關鍵字: 膠微粒(微胞);光散射;黏度;水力半徑;十二烷基硫酸鈉;界面活性劑