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Seeded Emulsion Polymerization of Styrene: Influence of Acrylic Acid on the Particle Growth Process by M. Slawinski; M. A. J. Schellekens; J. Meuldijk; A. M. Van Herk; A. L. German is a Materials Science article available to read on EtoBox.

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The seeded batch emulsion copolymerization of styrene and acrylic acid was studied. The polymerization rate was investigated with pH as the main parameter. Some attempts were made to evaluate the average number of growing chains per particle during Stage II of the emulsion polymerization process. The final latex products were characterized by means of conductometric aqueous titration and potentiometric titration in an organic solvent mixture. The distribution of the acid groups over the aqueous phase, the particle surface, and the interior of the particles together with the kinetic results provided insight into important features governing the incorporation of acrylic acid. The results indicate that pH is the dominating parameter for the incorporation process. An optimal incorporation on the surface of the particles is observed for a low value of pH. In that case, all the acid groups are protonated.

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Author

M. Slawinski; M. A. J. Schellekens; J. Meuldijk; A. M. Van Herk; A. L. German

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0021-8995)

Published

2000

Language

EN

Field

Materials Science (Physical Sciences)