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Interaction of synthetic polyampholytes with disperse particles
Author(s) -
Musabekov Kuanyshbek B.,
Tusupbaev Nesipbai K.,
Kudaibergenov Sarkyt E.
Publication year - 1998
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/(sici)1521-3935(19980301)199:3<401::aid-macp401>3.0.co;2-2
Subject(s) - flocculation , isoelectric point , colloid , chemistry , colloidal particle , chemical engineering , precipitation , polymer chemistry , organic chemistry , physics , meteorology , engineering , enzyme
The flocculating and stabilizing effect of synthetic polyampholytes with respect to negatively charged model latex systems as well as real mineral dispersions have been considered. It has been shown that the effectiveness of flocculation of disperse particles is maximal at the isoelectric point of polyampholytes. The experimental results obtained on interaction of negatively charged latex particles with synthetic polyampholytes, together with theoretical considerations of Joanny, allowed one to suggest a mechanism of flocculation of colloid dispersions by polyampholytes. It has been established that the interaction of butadiene‐styrene latex with polyampholytes is accompanied by the removal of emulsifiers from the surface of latex particles, which in turn leads to a strong hydrophobization of the system and its precipitation.