Dissolution behaviour of pure cefprozil monohydrate (CM) and cefuroxime axetile (CA) and their marketed tablets have been studied in aqueous as well as micellar media. Dissolution of cefprozil monohydrate is significantly assisted in presence of sodium dodecyl sulphate (SDS) and cetyltrimethylammonium bromide (CTAB). But, SDS and CTAB behave differently in accelerating the dissolution tendency ...

background; dyes can cause many problems in environment. therefore, removal of these contaminants before discharging wastewater to environment can reduce the environmental hazards. adsorption is one of the usual processes for decolorizing from wastewater. nanotubes are new adsorbents that can adsorb different compounds. this work aimed to investigate acid violet 17 dye removal by adsorption usi...

spectropholornetrie technique is used to evaluate binding of the vanadium(1u) ion to a water solublecaruc[4] arene molecule in aqueous solution. on the basis of the calculated value formation constant at25rc.we found that the eomplexation of this metal on is very favored towards 25, 26, 27, 2stetrahydroxy-5, 11, 17, 23-tetnmulphonalic acid-calix[0]arenegaussian 03 package.

This paper deals with the effects of a surfactant additive on the formation of methane hydrate in water system with and without sodium dodecyl sulfate (SDS). The properties of sodium dodecyl sulfate are listed. The results manifested that the presence of SDS could not only accelerate the hydrate formation process, but also increase the partition coefficient of methane between hydrate and vapor ...

The interactions between a model anionic and amphoteric surfactant pair in aqueous solution are examined as function of composition, at floating fixed pH, employing combination tensiometry, regular theory analysis, FTIR spectroscopy. An extensive series pure mixed ratios sodium dodecyl sulfate (SDS) N,N-dimethyldodecylamine N-oxide (DDAO), ranging from 0.0016 to 100 mM, yielding 77 data points ...

Vibrational sum frequency generation spectroscopy is used to study the interactions of the charged soluble organic surfactant sodium dodecyl sulfate (SDS) with an insoluble 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) monolayer at the air-aqueous interface. Results indicate that the surfactant species compete for surface sites in the mixed system, with a lower monolayer number density of ...

The in-plane rotational dynamics of the molecular probe coumarin 314 (C314) at the negatively charged surfactant sodium dodecyl sulfate (SDS)/aqueous interface was measured using femtosecond time-resolved second-harmonic spectroscopy. The in-plane orientational time constant at an SDS surface coverage of 100 Å2 per SDS molecule is 348 ( 12 ps, which is comparable to the out-of-plane reorientati...

Single crystalline indium nanowires were prepared on Zn substrate which had been treated in concentrated sulphuric acid by galvanic displacement in the 0.002 mol L-1In2(SO4)3-0.002 mol L-1SeO2-0.02 mol L-1SDS-0.01 mol L-1citric acid aqueous solution. The typical diameter of indium nanowires is 30 nm and most of the nanowires are over 30 μm in length. XRD, HRTEM, SAED and structural simulation c...

The structure of a self-assembly formed from a cationic azobenzene derivative, 4-cholesterocarbonyl-4'-(N,N,N-triethylamine butyloxyl bromide) azobenzene (CAB) and surfactant sodium dodecyl sulfate (SDS) in aqueous solution was studied by cryo-TEM and synchrotron radiation small-angle X-ray scattering (SAXS). Both unilamellar and multilamellar vesicles could be observed. CAB in vesicles were ca...