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Authors
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Suárez, I.J. ; Rubio Retama, J. ; Sierra-Martin, B. ; Nieves, F.J. ; Marquez, M. ; Fernandez Barbero, A.
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Title
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Ion-specific and reversible wetting of imidazolium-based minigels
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Date
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04.09.2008
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Number
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41791
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Abstract
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Cross-linked imidazolium-based [poly(ViEtIm+Br-)] microparticles were synthesized, and their wetting properties were studied by optical microscopy, after addition of aqueous solutions of sodium halides. Particle wetting showed ion specificity due to counterion binding, described by Desnoyers model. The interaction between anions and the microparticles allowed exchanging halogenides between them in a reversible way. A salt-independent characteristic wetting time was found as well as a decreasing power law with salt concentration, for the network diffusion coefficient. It modified the polymer network elasticity as ion concentration increased, making the network softer.
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Publisher
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Journal of Physical Chemistry / B
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Wikidata
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Citation
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Journal of Physical Chemistry / B 112 (2008) 10815-10820
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DOI
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https://doi.org/10.1021/jp802761y
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Tags
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polymer gels liquid microgels batteries kinetics salts cells water
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