SYMPOSIA PAPER Published: 01 January 1993
STP25127S

Effect of Polyethylene Glycol on the Adsorption of Polymeric Surface Active Agent and the Stability of Concentrated Suspensions

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The adsorption and the configuration of the polymeric surfactant at the solid / liquid interface are vital to the steric and electrostatic stability of suspension concentrates. The process of adsorption and the adsorption layer thickness to obtain the most stable system is a complex task and depends on many factors.

This paper discusses the stages involved in the optimization of a suspension concentrate and the results of a study of the effect of polyethylene glycol on adsorption of block polymer where the molecular weights of two components are varied. A model system was chosen to study various physico chemical properties such as adsorption, wetting, contact angle, dynamic surface tension, dilution performance, suspensibility, freeze-thaw stability, particle size, and rheology. Our results showed interesting correlations between these properties and the structure of the polymeric surfactant.

Author Information

Memula, S
Witco Corporation, Houston, TX
Jimenez, A
Witco Corporation, Houston, TX
Berger, CH
Witco Corporation, Houston, TX
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Details
Developed by Committee: E35
Pages: 100–113
DOI: 10.1520/STP25127S
ISBN-EB: 978-0-8031-5238-0
ISBN-13: 978-0-8031-1888-1