Applications of Complexed Polyelectrolytes

Complexed polyelectrolytes, PECs, when hydrated, offer a wide range of properties, from liquid-like to glassy. The dynamics of these systems have been well characterized, as have the effects of adding salt to dope or plasticize PECs (“saloplasticity”). After a brief introduction on what controls PEC properties, this talk will present three recent potential applications.  First, because dry PECs have a strong affinity for water, their use as desiccants for efficiently drying solvents will be presented. PECs may be regenerated at relatively low temperatures (slightly more than 100 ^oC). Second, with the view that stoichiometric (i.e. charge balanced) PECs have much in common with polyzwitterions, the application of glassy PECs to prevent/reduce biofouling will be presented. Finally, an underwater adhesive suitable for use as a pressure sensitive adhesive has been made using antibiotics and polyelectrolytes.