Polyelectrolytes, electrospun

To improve and control cell-fiber interactions, the fiber meshes can be either composed of biomacromolecules or postfunctionalized with appropriate biomolecules. The question arises as to which materials can be electrospun. In principle, all polymers can be spun if they provide enough entanglements in solution and adequate interactions between the solvent and solute. Biopolymers, in particular, show dominant H-bonding and/or polyelectrolyte effects, which lead to a strong viscosity increase or poor solvent evaporation. In order to prevent such... 

The electrospun PAN nanoflber membranes were plasma-treated prior to the LbL deposition of an aqueous solution of PHA and PVG (Chen et al. 2010). Multilayer polyelectrolyte coatings on the PAN fibers were produced by alternately dipping the nanofiber membrane in 10 mM PVG and PHA aqueous solutions. The dipping time in each polyelectrolyte solution was 60 min, followed by rinsing in deionized water for 3 min. The PVG/PHA-functionalized nanofiber membrane demonstrated potent bactericidal capability over representative strains of E. coli and S. epidermidis, when used as biological protective fabrics. 

Ding, B., Kim, J., Fujimoto, K. and Shiratori, S. 2004. Electrospun nanofibrous polyelectrolyte membranes for advanced chemical sensors. Chem. Sensors 20 264—265. 

Muller K, Quinn JF, Johnston APR, Becker M, Greiner A, Caruso F (2006) Polyelectrolyte functionalization of electrospun fibers. Chem Mater 18 2397-2403... 

Ding B, Kikuchi M, Li C, Shiratori S (2006a) Electrospun nanofibrous polyelectrolytes membranes as high sensitive coatings for QCM-based gas sensors. In Dirote EV (ed) Nanotechnology at the leading edge. Nova Science Publishers. New York, USA, pp 1-28... 

Li HY, Liu YL (2013) Polyelectrolyte composite membranes of polybenzimidazole and crosslinked polybenzrmidazole-polybenzoxazine electrospun nanoflbers for proton exchange membrane fuel cells. J Mat Chem A 1 1171-1178... 

Ding, B., K. Fujimoto, and S. Shiratori (2005a). Preparation and characterization of self-assembled polyelectrolyte multilayered films on electrospun nanofibers. Thin Solid Films 491(1-2) 23-28. 

The temperature of the solution has both the effect of increasing its evaporation rate and reducing the viscosity of the polymer solution, thus enabling the polymer solution which was spinnable under room temperature to be electrospun easily. For example, the hyaluronic acid is a natural polyelectrolyte that is hard to be electrospun under room temperature [27]. Li et al. [83] used the high electrospinning temperature that was higher than the gel temperature of hyaluronic acid (40 °C) and thus successfully fabricated hyaluronic acid composite nanofibers with uniform morphology. Similar method was also suitable for the fabrication of other natural... 

Ritcharoen, W., Supaphol, P. Pavasant, P. (2008). Development of polyelectrolyte multilayer-coated electrospun cellulose acetate fiber mat as composite membranes. European Polymer Journal, 44(12), 3963-3968. 

Penchev, H., et al. (2008). Novel electrospun nanofibers composed of polyelectrolyte complexes. Macromolecular Rapid Communications, 29(8), 677-681. 

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