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1,168 Newest Publications about the topic solution

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Cyclodextrins and Surfactants in Aqueous Solution above the Critical Micelle Concentration: Where Are the Cyclodextrins Located?

13-11-2014 | Marina Tsianou; Ankitkumar I. Fajalia, Langmuir, 2014

Cyclodextrins (CDs) are known to bind surfactant molecules below the surfactant critical micelle concentration (CMC); however, interactions of CDs with surfactant micelles (above the CMC) are not well understood. In particular, direct structural evidence of the location of CDs in the different ...

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High adsorptive properties of covalent triazine-based frameworks (CTFs) for surfactants from aqueous solution

11-11-2014 | Asamanjoy Bhunia; Subarna Dey; Maria Bous; Chenyang Zhang; Wolfgang von Rybinski; Christoph Janiak, Chemical Communication, 2014

Carbonaceous covalent triazine-based frameworks from 1,4-dicyanobenzene (CTF-1) can adsorb up to about 4 g/g of the surfactants alkyl polyglycolether, C12EO7 and sodium dodecylsulfate, SDS from aqueous solution (c = 8.0 mmol L–1) which is more than 20-times the gravimetric uptake capacity of a ...

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Quantification of Ion‐Pairing Effects on the Nucleophilic Reactivities of Benzoyl‐ and Phenyl‐Substituted Carbanions in Dimethylsulfoxide

10-11-2014 | Francisco Corral‐Bautista, Roland Appel, Johanna S. Frickel, Herbert Mayr, Chemistry - A European Journal, 2014

Abstract Second‐order rate constants for the reactions of acceptor‐substituted phenacyl (PhCOCH−Acc) and benzyl anions (PhCH−Acc) with diarylcarbenium ions and quinone methides (reference electrophiles) have been determined in dimethylsulfoxide (DMSO) solution at 20 °C. By studying the ...

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Surface Modification of Poly(ether sulfone) Membrane with a Synthesized Negatively Charged Copolymer

07-11-2014 | Wen Zou; Hui Qin; Wenbin Shi; Shudong Sun; Changsheng Zhao, Langmuir, 2014

In this study, we provide a new method to modify poly(ether sulfone) (PES) membrane with good biocompatibility, for which diazotized PES (PES-N2+) membrane is covalently coated by a negatively charged copolymer of sodium sulfonated poly(styrene-alt-maleic anhydride) (NaSPS-MA). First, aminated ...

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Purification, crystallization and preliminary crystallographic investigation of FrnE, a disulfide oxidoreductase from Deinococcus radiodurans

05-11-2014 | Lata Panicker, Hari Sharan Misra, Subhash Chandra Bihani, Acta Crystallographica Section F, 2014

In prokaryotes, Dsb proteins catalyze the formation of native disulfide bonds through an oxidative folding pathway and are part of the cell machinery that protects proteins from oxidative stress. Deinococcus radiodurans is an extremophile which shows unparalleled resistance to ionizing radiation ...

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Specific Interactions of Ag+ Ions with Anionic Polyacrylate Chains in Dilute Solution

05-11-2014 | A. Ezhova; K. Huber, Macromolecules, 2014

A detailed light scattering investigation is presented on dilute solutions of two long-chain sodium polyacrylates (NaPA) in the presence of monovalent Ag+ ions in 0.01 M NaNO3 aqueous solution at a pH of 9. The relevance for the investigation is based on two features: (i) despite its monovalency, ...

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Preparation, characterization, and photocatalytic degradation properties of polyacrylamide/calcium alginate/TiO2 composite film

03-11-2014 | Shuxin Wei, Xinxin Zhang, Kongyin Zhao, Yifan Fu, Zhihui Li, Beibei Lin, Junfu Wei, Polymer Composites, 2014

Titanium dioxide (TiO2) nanoparticles were dispersed in the sodium alginate and acrylamide aqueous solution to prepare the casting solution. The casting solution was spread on a glass plate by a glass rod enlaced with brass wires to control the thickness of the film. Then polyacrylamide/calcium ...

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Preparation of Plate‐Like Sodium Niobate Particles by Hydrothermal Method

03-11-2014 | Shan Bai, Yao Lu, Tomoaki Karaki, Journal of the American Ceramic Society, 2014

Sodium niobate NaNbO3 hydrate (NN‐hydrate) particles with a plate‐like morphology were prepared at 140°C for 2h in 12mol/L of NaOH by the hydrothermal method. Bar‐like Na8Nb6O19·13H2O particles were synthesized at as low as 100°C for 2h. This work demonstrates that by carefully optimizing the ...

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Antifouling and blood‐compatible poly(ether sulfone) membranes modified by zwitterionic copolymers via In situ crosslinked copolymerization

29-10-2014 | Jing‐Jing Wang, Ming‐Bang Wu, Tao Xiang, Rui Wang, Shu‐Dong Sun, Chang‐Sheng Zhao, Journal of Applied Polymer Science, 2014

ABSTRACT A novel and simple but practical method for the preparation of modified poly(ether sulfone) (PES) membranes was provided by the in situ crosslinked copolymerization of sulfobetaine methacrylate (SBMA) and sodium p‐styrene sulfonate (NaSS) in PES solution followed by a phase‐separation ...

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The transformation of silicon species contained in the used oils under industrially relevant alkali treatment conditions

29-10-2014 | Antonina Kupareva, Päivi Mäki‐Arvela, Henrik Grénman, Kari Eränen, Jarl Hemming, Dmitry Yu. Murzin, Journal of Chemical Technology & Biotechnology, 2014

Abstract Background In the lube oil re‐refining industry silicon, coming mainly from antifoaming agents, is recognized to be a contaminant generating undesired solid deposits. The behavior of the hydrogen‐terminated model compound tetramethyldisiloxane under base‐catalyzed conditions was ...

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