Bradley M. Berven, Richard O. Oviasuyi, Robert J. Klassen, Mike Idacavage, Elizabeth R. Gillies and Paul J. Ragogna Self-crosslinking borate anions for the production of tough UV-cured polyelectrolyte surfaces Journal of Polymer Science Part A: Polymer Chemistry 51
Tough polyelectrolyte coatings have been produced in a single step by UV-curing novel phosphonium-borate monomers. The new tetrakis(styryl)borate anion enables high crosslink density upon rapid photopolymerization. The full series of borates NaBPhxSty4− x, x = 0−3, have also been prepared and incorporated into the phosphonium borate salt monomers. As the number of styrene groups in the monomer increases, the polymer films become more mechanically resilient. Analysis by nanoindentation showed an increase in the film hardness while scratch tests showed an increased scratch resistance of the polyelectrolyte surface.
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