کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
613620 880725 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Latex diffusion at high volume fractions studied by fluorescence microscopy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Latex diffusion at high volume fractions studied by fluorescence microscopy
چکیده انگلیسی

The behavior of fluorescent latex probes (radii 0.05, 0.1, and 0.5 μm) in latex host particle suspensions was investigated by fluorescence microscopy with image analysis. The volume fraction of the host latex was varied between 0 and 0.50. A careful statistical analysis was performed to examine the accuracy of the fluorescence microscopy method, from which the direct observation of the Brownian motion gives the diffusion coefficient. The method was found to meet all statistical requirements. From rheological measurements, the maximum volume fraction and the intrinsic viscosity can be obtained. The Krieger–Dougherty equation can be used for the prediction of sample viscosities. The predicted viscosities were used to obtain the theoretical diffusion coefficients with the Stoke–Einstein equation. When comparing the theoretical diffusion coefficients with the experimental ones, it turned out that all models tested yielded acceptable predictions of the diffusion coefficients.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 298, Issue 1, 1 June 2006, Pages 162–171
نویسندگان
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