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Authors
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Schwarz, S. ; Ponce-Vargas, S. M. ; Licea-Claverie, A. ; Steinbach, C.
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Title
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Chitosan and mixtures with aqueous biocompatible temperature sensitive polymer as flocculants
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Date
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29.05.2012
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Number
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33045
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Abstract
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A novel strategy for faster and better flocculation in solidliquid separation processes is reported: the use of a natural polyelectrolyte (chitosan) in combination with a biocompatible thermosensitive polymer [poly(N-vinylcaprolactam) (PNVCL)].<br />Clay dispersions were used as model and evaluated by means of analytical centrifuge, laser diffraction, streaming potential and turbidimetry studies.<br />Results show that at 45 °C the density of the sediment is up to 15% higher, as compared to the use of chitosan only. This results from the temperature sensitive behaviour of PNVCL that phase separate expelling water at temperatures higher than it's LCST (3234 °C).<br />By using this strategy the sediment is more compact, contains less water, and contains a very small amount of biodegradable chitosan and biocompatible PNVCL.
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Publisher
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Colloids and Surfaces A: Physicochemical and Engineering Aspects
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Wikidata
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Citation
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Colloids and Surfaces A: Physicochemical and Engineering Aspects 413 (2012) 7-12
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DOI
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https://doi.org/10.1016/j.colsurfa.2012.03.048
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Tags
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