Obtención de floculantes no iónicos y aniónicos (densidad de carga 40%) por polimerización en microemulsión inversa. Influencia del sistema tensioactivo
- J.R. Ochoa Gómez 1
- M. Muñoz Hernández 1
- P.M. Sasía Santos 2
- N. Gómez 2
- F. Río 3
- E. Díaz de Apodaca 3
- B. Valle 3
- F.J. Escudero 3
- M.C. Rodríguez Fernández 4
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1
Universidad Alfonso X el Sabio
info
- 2 ACIdEKA
- 3 LEIA C.D.T
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4
Universidad de Alcalá
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ISSN: 0121-6651, 1988-4206
Argitalpen urtea: 2003
Alea: 4
Zenbakia: 4
Orrialdeak: 14-29
Mota: Artikulua
Beste argitalpen batzuk: Revista Iberoamericana de Polímeros
Laburpena
Stability of polymeric flocculants in inverse microemulsion has been related to the selection of surfactant mixtures selected on the basis of both CER (cohesive energy ratio) and packing parameter¥s theories. However, current experimental data have been obtained by using only one surfactant system based on sorbitol oleates and sorbitan sesquioleate. In this paper, the influence of the surfactant system has been deeper studied. Several surfactant mixtures of different chemical and structural characteristics have been studied. Experimental results show that the abovementioned theories are not sufficient to explain said stability. A series of general rules that a surfactant system has to meet for obtaining stable inverse microemulsions of anionic polymeric flocculants, based on acrylamide and sodium acrylate, have been deduced: a hydrophobic surfactant chain length of at least 18 carbon atoms and at least one double bond on each hydrophobic chain. Hydrophobic chain volume, related to the number of hydrophobic chains of each component of the surfactant system, has a secondary influence in comparison with the hydrocarbon chain length.