Submicron Separation and Data
Abstract
The present theory for predicting the dependence of the zeta potential and surface charge of colloidal particles on the concentration of electrolytes, surfactant, and pH is reviewed and shown to be inadequate for explaining experimental observations. A new theory is developed which explains these observations and is in good quantitative agreement with experimental data in the literature. This theory considers the various ways in which a surface charge can develop on a particle. These include adsorption of complex ions derived from electrolytes and from the particle itself and dissociation of surface groups due to chemical reactions at the particle surface. The result is an analytical expression for planar surfaces and a computer program for spherical surfaces.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1972
- Accession Number
- AD0743542
Entities
People
- Reg Davies
- Walter J. Wnek
Organizations
- IIT Research Institute