Polymer-surfactant interactions in aqueous solutions of a hydrophobically modified polymer, poly(maleic acid/octyl vinyl ether) (PMAOVE), with sodium dodecyl sulfate (SDS) were studied using surface tension, viscosity, electron paramagnetic resonance spectroscopy, and fluorescence spectroscopic techniques. When the anionic surfactant SDS was added to the aqueous solutions of the similarly charg...

Biofilms cause extensive damage to industrial settings. Thus, it is important to improve the existing techniques and develop new strategies to prevent bacterial biofilm formation. In the present study, we have prepared nanoporous polymer films from a self-assembled 1,2-polybutadiene-b-polydimethylsiloxane (1,2-PB-b-PDMS) block copolymer via chemical cross-linking of the 1,2-PB block followed ...

We find the aqueous PEO–SDS mixtures show a significantly weaker concentration-dependent variation in extensional relaxation time, filament lifespan, and viscosity values than anticipated by shear vs. concentration plots.

. The kinetics of the reaction between potassium persulphate and potassium iodide has been studied iodometrically in aqueous solutions of sodium dodecyl sulphate (SDS) at various surfactant concentrations. It is observed that from low concentrations up to the c.m.c, the surfactant behaves like a normal electrolyte exhibiting primary kinetic salt effect. In presence of micelles it is observed th...

PURPOSE To determine the efficacy of intraoperative antibiotic use in irrigating solutions on aqueous humor contamination during phacoemulsification surgery and to evaluate the corresponding risk of postoperative endophthalmitis. METHODS 644 eyes of 640 patients who underwent phacoemulsification surgery with foldable intraocular lens (IOL) implantation were included in this study. Preoperativ...

We report the use of UV light to control the dynamic surface tensions of mixed surfactant systems containing sodium dodecyl sulfate, SDS, and 4,4′-bis(trimethylammoniumhexyloxy)azobenzene bromide, BTHA. The light influences the dynamic surface tension of these solutions by driving the isomerization of the azobenzene moiety from cis to trans. By combining use of the du Nouy ring, maximum bubble ...

the energy minima of systems made of an alanine molecule, a lithium cation and a various number of watermolecules have been determined with the help of quantum mechanical computations at the b3lyp densityfunctional theory level of computation and the standard 6-311++g (d,p) basis set. several structures, close inenergy are found and the presence of one or two water molecules around the cation m...

background and purpose: highly consumption of antibiotics and their entrance into the environment has increased concerns all over the world. these compounds enter to the environment through an incomplete metabolism and a considerable amount of them cannot be removed using usual waste filtration systems. therefore, the present study aimed to investigate the feasibility of using ultraviolet radia...

Native alpha-cyclodextrin (alpha-CD) is found to spontaneously form films at aqueous solution/air interfaces. Shape-response measurements to volume perturbations on drops hanging from a capillary indicate that temperature and sodium dodecyl sulfate (SDS) concentration strongly modify the viscoelastic properties of such films. By using isothermal titration calorimetry (ITC), Brewster angle micro...

Dissolution behaviour of both 5, 5-diphenyl hydantoin sodium commonly known as dilantin sodium (DS) and its corresponding marketed capsule dilantin have been studied in aqueous as well as micellar media. Percentage dissolution of both DS and its marketed capsule are found to be low as expected in aqueous medium due to its very low solubility in water. However, their dissolution tendency is foun...