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|Title:||Spectrofluorometric studies on the intermolecular interaction in some aqueous surfactant-polymer solutions|
|Authors:||Yadav, O P|
Jain, D V S
|IPC Code:||Int. Cl.7. G01N 21/64|
|Abstract:||Using anthracene as a fluorescence probe, the intermolecular interaction in sodium dodecyl sulphate (SDS)+poly(N-vinyl-2- pyrrolidone) (PVP) and bis(2-ethylhexyl sulphosuccinate sodium salt) (AOT)+polyvinyl alcohol (PVA) in aqueous solutions have been investigated. From the observed vibronic band intensity ratio, I1/I3, (at λem = 340 nm and λem = 404 nm), in the fluorescence spectra of 10-6 mol dm-3 anthracene as a function of surfactant concentration, the order of polarity of microenvironment around the probe in aqueous surfactant+polymer solutions has been assessed. Fluorescence data show that binding of premicellar aggregates of anionic surfactant, SDS, with PVP takes place, over the surfactant concentration of 3-15 mmol dm-3 prior to usual micelle formation. However, in the case of AOT +PVA, instead of binding of surfactant with the polymer, formation of mixed micelles having CMC value lower than that for pure AOT has been observed.|
|Appears in Collections:||IJC-A Vol.44A(02) [February 2005]|
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