Polyelectrolyte complexes(PECs) are prepared by the association of positively and negative charged polyelectrolytes. In this study, non-stoichiometric ratios of poly(diallyldimethylammonium) (PDADMA), and poly(styrenesulfonate) (PSS), were dissolved in a high concentration of aqueous KB. Non-stoichiometric PECs were then precipitated out by quenching with water. The extent of overcompensation was about 35% for PDADMA and about 40% for PSS. Compared to stoichiometric PECs, these non-stoichiometric PECs exhibit different characteristics such as swelling in water, lower storage and loss modulus and lower glass transition temperatures.

Preparation and mechanical properties of non-stoichiometric PSS/PDADMA polyelectrolyte complexes

2019 Spring National Meeting

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