Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/62653
Type: Artigo de periódico
Title: CETYLPYRIDINIUM CHLORIDE SORPTION IN AN ION-EXCHANGE RESIN - THE CASE OF SORPTION KINETICS ASSOCIATED WITH POLYMER FRACTURE
Author: AMORIM, E
GALEMBECK, F
KLEINKE, MU
Abstract: The adsorption of cetylpyridinium chloride (CPC) from aqueous solutions on a styrenic cation-exchange resin was determined, using dynamic (chromatographic) and static (batch) methods. Cation exchange site occupancy (theta) is less than 1% for short (100 s) contact times of surfactant solution with resin, but a approaches unity after 20-30 h, at the highest concentrations and temperatures used in this work. a vs time curves are not smooth and show surges of surfactant sorption, at some points. Microscopic examination showed that resin particles swell and break down during surfactant sorption, evidencing that the mechanical tensions created in this process are sufficient to induce fracture in highly cross-linked, poorly plasticized particles.
Editor: Amer Chemical Soc
Rights: fechado
Identifier DOI: 10.1021/la00004a048
Date Issue: 1995
Appears in Collections:Unicamp - Artigos e Outros Documentos

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