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Influence of polyelectrolyte multilayer adsorption on the temperature sensitivity of poly(N-isopropylacrylamide) (PNiPAM) microgels

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Abstract

The electrophoretic mobility and temperature-dependent particle size of poly(N-isopropylacrylamide) (PNiPAM) microgels after alternating adsorption of poly(diallyldimethylammonium chloride) (PDADMAC) and poly(sodium 4-styrenesulfonate) (PSS) have been determined. First a PNiPAM-co-acrylic acid (AAc) shell was added to the PNiPAM microgel, then PDADMAC and PSS were adsorbed alternately. The studies of the electrophoretic mobility revealed charge reversal when a polyelectrolyte (PE) layer was adsorbed. Particle size measurements revealed a strong influence of polyelectrolyte adsorption on the temperature-dependent particle swelling. The strong influence of the adsorbed polyelectrolyte on the particle size is in contrast to polyelectrolyte multilayer adsorption on rigid particles.

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  1. Institut für Physikalische Chemie, RWTH Aachen, Templergraben 59, D-52056, Aachen, Germany

    Nils Greinert & Walter Richtering

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  1. Nils Greinert
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  2. Walter Richtering
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Correspondence to Walter Richtering.

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Greinert, N., Richtering, W. Influence of polyelectrolyte multilayer adsorption on the temperature sensitivity of poly(N-isopropylacrylamide) (PNiPAM) microgels. Colloid Polym Sci 282, 1146–1149 (2004). https://doi.org/10.1007/s00396-004-1048-9

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  • DOI: https://doi.org/10.1007/s00396-004-1048-9

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