The impact of the of cationic polyelectrolyte polymerization degree in latexes coagulation dosage of synthetic emulsion rubbers
https://doi.org/10.20914/2310-1202-2019-1-318-324
Abstract
The literature data on the parameters of coagulation of butadiene-styrene and butadiene-?-methyl styrene latexes by cationic polyelectrolytes in comparison with low-molecular ammonium compounds and nonionic polymers are discussed. The optimal dosage of cationic polyelectrolyte during coagulation of synthetic emulsion rubber latex stabilized by a combination of synthetic fatty acid Soaps and disproportionated rosin with a mixture of sodium salts of the oligomeric condensation product ?-naphthalenesulfonic acid with formaldehyde (Leukanol) is determined, ceteris paribus, by its degree of polymerization. The decrease in the optimum dosage during the transition from high molecular weight polyelectrolytes to the oligomers caused by decrease of the cationic and anionic groups ratio required for a complete binding Leukanol in the formation of oligomer-oligomer complexes compared with the polymer-oligomer complexes. This is due, apparently, the fact that an increase in the average molecular weight of the polyelectrolyte increases the proportion of so-called tails and loops, consisting of units of the polyelectrolyte that are not associated with molecules Leukanol
About the Author
Y. N. Orlov
Togliatti state university
Russian Federation
Cand. Sci. (Chem.), associate professor, chemistry, chemical processes and technologies department, Belorusskaya St., 14 Togliatti, 445020, Russia
Russian Federation
Cand. Sci. (Chem.), associate professor, chemistry, chemical processes and technologies department, Belorusskaya St., 14 Togliatti, 445020, Russia
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Review
For citations:
Orlov Y.N. The impact of the of cationic polyelectrolyte polymerization degree in latexes coagulation dosage of synthetic emulsion rubbers. Proceedings of the Voronezh State University of Engineering Technologies. 2019;81(1):318-324. (In Russ.) https://doi.org/10.20914/2310-1202-2019-1-318-324
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