Heteroflocculation in binary colloidal suspensions: Monte Carlo simulations

Wan Y. Shih, Wei Heng Shih, Ilhan A. Aksay

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

We have examined heteroflocculation in binary colloidal suspensions by Monte Carlo simulations based on a diffusion-limited-cluster-aggregation (DLCA) model modified with finite attraction energies. The simulations were performed in two dimensions. Under heteroflocculation conditions, i.e., attraction between unlike particles and repulsion between like particles, cluster size undergoes a maximum as the concentration of the second species of particles is increased, similar to the experimental results in both binary suspensions and suspensions with adsorbing polymers. The initial increase in cluster size at low concentrations of the second species of particles is due to the mutual attraction between unlike particles. The decrease in cluster size at higher concentrations of the second species of particles is due to the repulsion between the second species of particles. The distinction between heteroflocculation and particulate depletion flocculation is discussed. star operator sign Member, American Ceramic Society.

Original languageEnglish (US)
Pages (from-to)2587-2591
Number of pages5
JournalJournal of the American Ceramic Society
Volume79
Issue number10
DOIs
StatePublished - Oct 1996

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Heteroflocculation in binary colloidal suspensions: Monte Carlo simulations'. Together they form a unique fingerprint.

Cite this