Long-lasting dashed waves in a reactive microemulsion | Zendy

Jorge Carballido Landeira | Zendy; Igal Berenstein | Zendy; Pablo Taboada | Zendy; Vı́ctor Mosquera | Zendy; Vladimir K. Vanag | Zendy; Irving R. Epstein | Zendy; V. Pérez-Villar | Zendy; Alberto P. Muñuzuri | Zendy

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Long-lasting dashed waves in a reactive microemulsion

Author(s) -

Jorge Carballido Landeira,

Igal Berenstein,

Pablo Taboada,

Vı́ctor Mosquera,

Vladimir K. Vanag,

Irving R. Epstein,

V. Pérez-Villar,

Alberto P. Muñuzuri

Publication year - 2008

Publication title -

physical chemistry chemical physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.053

H-Index - 239

eISSN - 1463-9084

pISSN - 1463-9076

DOI - 10.1039/b714705h

Subject(s) - microemulsion , ethylene oxide , pulmonary surfactant , belousov–zhabotinsky reaction , polymer , materials science , chemical engineering , oxide , aerosol , chemistry , chemical physics , organic chemistry , composite material , copolymer , engineering

In the Belousov-Zhabotinsky (BZ) reaction carried out in a reverse microemulsion with Aerosol OT as surfactant, the existence of two different sizes of droplets containing the BZ reactants leads to the emergence of segmented (dashed) waves. This bimodal distribution of sizes is stabilized by adding small amounts of the homopolymer poly(ethylene oxide) (PEO). Addition of PEO lengthens the period during which these patterns are observed, so that dashed waves can persist for 12-14 h, in contrast to the 2-3 h found in earlier studies without added polymer.

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