Effects of Adsorbed Polymers on the Axisymmetric Motion of Two Colloidal Spheres

✍ Scribed by Jimmy Kuo; Huan J. Keh

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 309 KB
• Volume: 195
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1997.5144

✦ Synopsis

advantages in relative insensitivity to the presence of electro-The effects of adsorbed polymer on the slow motion of two lytes, equal efficiency in both aqueous and nonaqueous disspherical particles along the line of their centers are examined persion, reversibility of flocculation, and equal efficiency at semianalytically. The particles may have unequal radii, and their both high and low particle concentrations (1, 2). Nowadays surface polymer layers are allowed to differ in characteristics. The stabilization by either natural or synthetic polymers is exsurface polymer layer on each particle is assumed to be thin relaploited in a diverse range of industrial products (e.g., paints, tive to the radius of the particle and to the surface-to-surface glues, inks, lubricants, detergents, pharmaceutical and food distance between the particles. A method of matched asymptotic emulsions) and operative in many biological systems (such ᭧ 1997 Academic Press segments on the solvent motion relative to the particle. This Key Words: motion of two particles; adsorbed polymers; hydroexperimentally defined length is the thickness of a totally dynamic thickness; particle interactions.

impermeable layer that would be required on the particle surface to produce the extra viscous drag. Several methods are available for determining the hydrodynamic thickness of 1 To whom correspondence should be addressed. derson and Kim (21) using a method of matched asymptotic 353