Abstract
AbstractThe data obtained by investigating the effect of the pH value on the colloid‐chemical properties of carboxyl‐containing latices are related to the formation and properties of films. In contrast to other dispersions, those containing copolymers being characterized by polymethacrylic acid contents higher than a certain value the latex and films properties were found to be related in a particular way to the pH value. At pH values between 3 and 8.5 no effect on the properties of the dispersion was observed, while the properties of films were found to be affected. Beyond pH = 8.5 a correlation between the changes of the properties of films and dispersions was established. By means of various physico‐chemical methods these characteristics were found to be caused by conformational transitions in the macromolecular associates forming the latex particles.
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