کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4721259 1639372 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A model for the viscosity of dilute smectite gels
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
A model for the viscosity of dilute smectite gels
چکیده انگلیسی

A simple yet accurate model describing the viscosity of dilute suspensions of sodium montmorillonite in dilute homoionic solutions is presented. Taking the clay particle and the surrounding clouds of ions as a whole as an uncharged but soft, coin-like particle, the Huggins’ equation for a suspension of uncharged particles is extended in the model to account for not only the primary and the secondary electroviscous effects, but also the multi-particle interaction. The agreements between the predicted and measured results are excellent. The Huggins’ coefficient obtained compares favorably with available data, while the intrinsic viscosity reduces to the Simha’s equation in the large limit of ionic strength, suggesting that the model is robust.


► We develop a dressed-ion model describing the viscosity of dilute smectite gel in homoionic solutions.
► We take the clay particle and the surrounding clouds of ions as a whole as an uncharged but soft, coin-like particle.
► We extend the Huggins’ equation to account for both the electroviscous effects and the multi-particle interactions.
► The agreements between the predicted and measured viscosity of the Na-montmorillonite suspensions are excellent.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics and Chemistry of the Earth, Parts A/B/C - Volume 36, Issues 17–18, 2011, Pages 1792–1798
نویسندگان
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