Influence of dispersion conditions and nature of the emulsifier on the dispersity and stability of artificial polymer suspensions based on polyetherimide.

Autor: Stuzhuk, A. N., Gritskova, I. A., Gorbatov, P. S., Shkol'nikov, A. V., Kuznetsov, A. A.
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Zdroj: Russian Chemical Bulletin; Feb2022, Vol. 71 Issue 2, p382-388, 7p
Abstrakt: New methods for producing artificial polyetherimide suspensions in the presence of domestic cationic surfactants, their mixtures, and mixtures of cationic and organosilicon surfactants were proposed. The effect of the polymer concentration in the initial solution and conditions of emulsion dispersion on the stability and particle size of the final polymer suspensions is shown. The colloidal chemical properties of the obtained polymer suspensions are considered. Conclusions about the influence of the nature and concentration of surfactants on the stability of the obtained suspensions are drawn. When using a mixture of cationic and organosilicon surfactants, polymer suspensions stable during production and storage are formed, which is explained by the formation of structural mechanical and electrostatic stability barriers in the surface layers of the particles. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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