ISSN:
1435-1536
Keywords:
Cyclic acetal
;
type cationic surfactants-dynamic light scattering
;
micropolarity-oil-in-water microemulsions
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Microenvironment characteristics of cationic oil-in-water microemulsions stabilized by [(2-alkyl-1,3-dioxolan-4-yl)methyl] trimethylammonium bromides (C n -D-TAB;n=9,11, 13) and 1-butanol as a cosufactant have been studied by means of light scattering and fluorescence probing techniques. The aggregation parameters (translational diffusion coefficient of microemulsion droplets (D 0), their hydrodynamic radius (R h) and aggregation number (n)) have been determined as a function of composition and temperature and discussed with respect to the parameters of the “classical” alkyltrimethylammonium bromides (C n -TAB,n=14, 16). The micropolarity of the hydrophobic region has been detected by changes in the spectral characteristics of fluorescent pyrene. The obtained results can be useful in designing chemodegradable microemulsion media for the synthetic methodology.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01188970
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