کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9675758 | 1454106 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
How does a concentrated emulsion flow?
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: How does a concentrated emulsion flow? How does a concentrated emulsion flow?](/preview/png/9675758.png)
چکیده انگلیسی
Using high-frequency ultrasonic velocimetry, we perform simultaneously rheological and local velocity measurements in a 75%âwt. concentrated emulsion after a step-like shear rate applied for 3âh. Velocity profiles in the vicinity of the yield stress unveil the existence of transient inhomogeneous flows. However, approaching the equilibrium, banded states disappear and the emulsion flows homogeneously. At higher shear rates, we show that the local rheological behaviour evolves with the imposed shear rate. Changes in droplet concentration may be responsible for such a behaviour. We finally point out the presence of wall slip and investigate the evolution of the lubricating layers' thicknesses with the shear stress.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 263, Issues 1â3, 1 August 2005, Pages 146-152
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 263, Issues 1â3, 1 August 2005, Pages 146-152
نویسندگان
Lydiane Bécu, Pauline Grondin, Annie Colin, Sébastien Manneville,