Flocculation, deflocculation, and ions migration in latex suspensions

Autor:	D.Z. Gunes, A. Knaebel, M. Dorget, François Lequeux, J. P. Munch
Rok vydání:	2004
Předmět:	Flocculation Diffusing-wave spectroscopy Chemistry Inorganic chemistry Light scattering Surfaces Coatings and Films Electronic Optical and Magnetic Materials Suspension (chemistry) Ion Dilution Biomaterials Core shell Solvent Colloid and Surface Chemistry
Zdroj:	Journal of colloid and interface science. 286(2)
ISSN:	0021-9797
Popis:	We have studied the dynamics of the flocculation of poly(styrene–butadiene–acrylic acid) latex suspensions. These suspensions were flocculated by the addition of Ca2+ ions at high concentrations of latex particles. Using diffusing wave spectroscopy and dynamic single light scattering after dilution, we have observed—depending on the pH and on the Ca2+ concentration—several scenarios for flocculation including successive flocculation and deflocculation. This complex behavior reveals that the Ca2+ migration within the shell of the latex is slow in acidic solvent but fast in basic solvent.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e739fdec692e794941cbd7ab19049f9 https://pubmed.ncbi.nlm.nih.gov/15897072 Zobrazit plný text záznamu Full Text from ScienceDirect