Abstract
Polypeptides (polyglutamic acid in sodium form) of three different polymerization degrees have been adsorbed on cationic polystyrene latex. The electrokinetic behavior of the complex PG/PS has been studied by microelectrophoretic mobility. The effect of ionic strength and pH on electrokinetic properties of the complex PG/PS have also been studied. It has been found that the appearance of maximum inu e -logc curves is related to coverage degree of polystyrene surface and the polymerization degree of polypeptides chains. Likewise, the form of such curves depends markedly on pH. An attempt has been made to explain the data in terms of conformational changes of the adsorbed polypeptides chains.
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Hidalgo-Alvarez, R., de las Nieves, F.J., Van der Linde, A.J. et al. Conformational changes of polyglutamic acid adsorbed on cationic polystyrene as characterized by microelectrophoresis technique. Colloid & Polymer Sci 267, 853–856 (1989). https://doi.org/10.1007/BF01410127
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DOI: https://doi.org/10.1007/BF01410127