Naslov
A Fractal Model for the Molecular Organization in the Alkylbenzenesulphonate / Electrolyte / Water System

Autori
Težak, Đurđica ; Punčec, Suzana ; Martinis, Mladen

Izvornik
Liquid crystals (0267-8292) 23 (1997), 1; 17-25

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
fractal model; molecular organization

Sažetak
Under conditions where individual molecules are no longer soluble, the association of amphiphiles occurs as a sequence of growth and aggregation processes: theformation of dimers, bilayers, multilayer assemblies, culminates with the production of myelin cylinders and chains or spherulitic arrays of focal conic units. We have examined this process using the alkylbenzenesulphonate / electrolyte / water system as a model. The phase diagram was obtained using optical microscopy. The kinetics of the aggregation process were followed by light scattering measurements and the structures of the one- and two-phase regions by optical microscopy, and freeze-fracture electron microscopy. The fractal nature of the aggregation process was investigated using an indirect Fourier transform study of the lightr scattering data. The fractal character of the whole self-assembly process was confirmed and an experimental value of 2.17 was determined for the fractal dimension (in close agreement with the expected theoretical value of 2.16).

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija

POVEZANOST RADA