Understanding The Electrospinability Of Complex Coacervates
July 21-24, 2019
Complex coacervation is an associative, liquid-liquid phase separation that is driven by the electrostatic and entropic interactions between oppositely-charged polymers in water. For many coacervating systems it is possible to transition from the liquid coacervate state to a solid material by removing salt. This ‘saloplasticity’ allows for the processing of materials via methods such as spin coating, extrusion, etc. using the coacervate phase as a liquid precursor. In particular, we have developed an approach that uses complex coacervation as an environmentally friendly method for fabricating ultra-stable electrospun fibers directly from aqueous solutions. We have used this method to electrospin complexes of various synthetic polymers as well as natural biopolymers. These efforts have required the simultaneous exploration of the phase behavior of coacervate formation, as well as the rheology of the liquid coacervates.
Sarah Perry, Xiangxi Meng, Juanfeng Sun, Jessica D. Schiffman, and Yalin Liu, "Understanding The Electrospinability Of Complex Coacervates" in "Colloidal, Macromolecular and Biological Gels II", Samiul Amin, Manhattan College, USA Saad Khan, North Carolina State University, USA Srini Raghavan, University of Maryland College Park, USA Eds, ECI Symposium Series, (2019). https://dc.engconfintl.org/cmb_gels_ii/20