Abstract

The onset of phase separation in diblock copolymers made of neutral and weakly charged blocks is studied in the presence of arbitrary amounts of added salt is studied. The strong dependence of the critical interaction parameter (and hence of the spinodal temperature or the critical chain length) and of the wavelength of microphase separation on the chain charge and on the salt concentrations suggests that the stability and the morphology of the resulting phases can be controlled and fine-tuned by adjusting these parameters

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