کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
603485 880228 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Interactions between solid surfaces with adsorbed polyelectrolytes of opposite charge
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Interactions between solid surfaces with adsorbed polyelectrolytes of opposite charge
چکیده انگلیسی

Adsorption of polyelectrolytes to surfaces of opposite charge typically leads to charge neutralization and subsequent charge reversal. As can be shown by direct force measurements and stability studies, the interaction forces are dominated by repulsive forces originating from diffuse layer overlap and attractive van der Waals forces, in line with the classical theory of Derjaguin, Landau, Verwey, and Overbeek (DLVO). Recently, the existence of an additional attractive non-DLVO force was demonstrated, and its likely origin is the attraction between patch-charge heterogeneities. With novel single molecule pulling experiments with the atomic force microscope (AFM) polymer bridging forces could be shown to represent the most important contribution to the adhesion of surfaces coated by polyelectrolytes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Opinion in Colloid & Interface Science - Volume 13, Issue 6, December 2008, Pages 429–437
نویسندگان
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