NDLI: Stability of the polymerizable surfactant stabilized latex particles during semibatch emulsion polymerization

Content Provider	Springer Nature Link
Author	Chern, C. S. Chen, Y. C.
Copyright Year	1997
Abstract	The effect of the polymerizable surfactant, sodium dodecyl allyl sulfosuccinate (JS-2), on the stability of polybutyl acrylate latex particles during semibatch emulsion polymerization was investigated in this work. Experimental data show that the ionic strength is the most important parameter in determining the latex stability during the reaction. Both the amount of coagulum produced by intensive coagulation and percentage of the particle volume change (ΔV) caused by limited flocculation increase with increasing electrolyte concentration. The parameter Δ V increases significantly when the concentration of JS-2 in the initial reactor charge ([JS-2]i) increases. The amount of coagulum increases rapidly when the agitation speed is increased from 400 to 800 rpm. Experiments of coagulation kinetics were carried out to study the stability of latex products toward added salts. The experimental data show that the chemical stability of the latex product increases with increasing pH. Furthermore, the critical coagulation concentration and diffuse potential increase with increasing [JS-2]i. It is postulated that the increasing electrostatic attraction force between two approaching particles due to the increased [JS-2] i can increase the apparent magnitude of Hamaker constant.
Starting Page	124
Ending Page	130
Page Count	7
File Format	PDF
ISSN	0303402X
Journal	Colloid and Polymer Science
Volume Number	275
Issue Number	2
e-ISSN	14351536
Language	English
Publisher	Steinkopff-Verlag
Publisher Date	1997-01-01
Publisher Place	Darmstadt
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Latex stability polymerizable surfactant semibatch emulsion polymerization coagulation kinetics Polymer Sciences Soft Matter, Complex Fluids Characterization and Evaluation of Materials Physical Chemistry Food Science
Content Type	Text
Resource Type	Article
Subject	Colloid and Surface Chemistry Materials Chemistry Physical and Theoretical Chemistry Polymers and Plastics

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