کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
612968 880711 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Aggregate morphology and aggregation rate constants for silica dispersions in the presence of salt and polyelectrolyte
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Aggregate morphology and aggregation rate constants for silica dispersions in the presence of salt and polyelectrolyte
چکیده انگلیسی

It is shown that the addition, over suitable concentration ranges, of mixtures of (nonadsorbing) sodium poly(styrene sulfonate) and potassium chloride, to dispersions of silica particles in water, can lead to very large changes in the sediment height of the resulting aggregates, reflecting similarly large changes in particle packing density within the aggregates. It can also lead to aggregation rates which are considerably faster than the diffusion-controlled rates (by as much as a factor of 2.5), although this enhancement is reduced as the dispersion particle concentration is reduced.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 309, Issue 1, 1 May 2007, Pages 119–125
نویسندگان
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