Induced crystallization of polyelectrolyte-surfactant complexes at the gas-water interface.

Citation:

Vaknin D, Dahlke S, Travesset A, Nizri G, Magdassi S. Induced crystallization of polyelectrolyte-surfactant complexes at the gas-water interface. Los Alamos Natl. Lab., Prepr. Arch., Condens. MatterLos Alamos National Laboratory, Preprint Archive, Condensed Matter [Internet]. 2004 :1-4, arXiv:cond-mat/0401194.

Date Published:

2004///

Abstract:

Synchrotron-x-ray and surface tension studies of a strong polyelectrolyte (PE) in the semi-dil. regime (∼O.1M monomer-charges) with varying surfactant concns. show that minute surfactant concns. induce the formation of a PE-surfactant complex at the gas/soln. interface. X-ray reflectivity and grazing angle x-ray diffraction (GIXD) provide detailed information of the top most layer, where the surfactant forms a 2-dimensional liq.-like monolayer, with a noticeable disruption of the structure of H2O at the interface. With the addn. of salt (NaCl) columnar-crystals with distorted-hexagonal symmetry are formed. [on SciFinder(R)]