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Polypropylene membranes with the double sensitivity effect

12-12-2014 | Joanna Wolska, Katarzyna Smolinska‐Kempisty, Marek Bryjak, Wojciech Kujawski, Journal of Applied Polymer Science, 2014

ABSTRACT This article describes the modification of polypropylene membranes leading to the preparation of thermo‐ and pH‐sensitive structures. Poly(N‐isopropylacrylamide), poly(acrylic acid), or copolymer poly(N‐isopropylacrylamide‐co‐acrylic acid) was grafted on to the membranes' surface ...


Properties Governing the Transport of Trace Organic Contaminants through Ion-Exchange Membranes

12-12-2014 | Marjolein Vanoppen; Annelise F.A.M. Bakelants; Dorien Gaublomme; Klaas V.K.M. Schoutteten; Julie Vanden Bussche; Lyn ..., Environmental Science & Technology, 2014

Ion exchange membranes could provide a solution to the selective separation of organic and inorganic components in industrial wastewater. The phenomena governing the transport of organics through the IEM however, are not yet fully understood. Therefore, the transport of trace organic contaminants ...


Separation and purification of both tea seed polysaccharide and saponin from camellia cake extract using macroporous resin

10-12-2014 | Pengjie Yang, Mingda Zhou, Chengyun Zhou, Qian Wang, Fangfang Zhang, Jian Chen, Journal of Separation Science, 2014

A novel method to separate and purify tea seed polysaccharide and tea seed saponin from camellia cake extract by macroporous resin was developed. Among four kinds of resins (AB‐8, NKA‐9, XDA‐6, and D4020) tested, AB‐8 macroporous resin possessed optimal separating capacity for the two substances ...


Breaking aggregation in a tetrathiafulvalene-fused zinc porphyrin by metal–ligand coordination to form a donor–acceptor hybrid for ultrafast charge separation and charge stabilization

10-12-2014 | Atanu Jana; Habtom B. Gobeze; Masatoshi Ishida; Toshiyuki Mori; Katsuhiko Ariga; Jonathan P. Hill; Francis D'Souza, Dalton Transactions, 2014

A novel electron rich, tetrathiafulvalene fused zinc porphyrin, (TTF)4PZn, has been newly synthesized and characterized using spectral and electrochemical methods. In spite of the presence of eight t-butyl groups, (TTF)4PZn exhibited appreciable aggregation in solution. Scanning electron ...


Temperature Driven Macromolecule Separation by Nanoconfinement

10-12-2014 | Ilaria De Santo; Filippo Causa; Paolo A. Netti, Macromolecules, 2014

We focused on the influence of temperature variations on macromolecule partitioning between unconfined and nanoconfined areas in nanoslits using single molecule measurements. We evaluated the number of fluorescent poly(ethylene glycol) (PEG) molecules confined in glass nanoslits in several ...


Determination of copper, nickel, manganese and cadmium ions in aqueous samples by flame atomic absorption spectrometry after simultaneous coprecipitation with Co(OH)2

07-12-2014 | Author(s): Sayed Zia Mohammadi , Tayebeh Shamspur , Yar Mohammad Baghelani, Arabian Journal of Chemistry, 2014

Publication date: Available online 5 December 2014 Source:Arabian Journal of Chemistry Author(s): Sayed Zia Mohammadi , Tayebeh Shamspur , Yar Mohammad Baghelani A separation-preconcentration procedure was developed for determination of trace amounts of copper, nickel, manganese and ...


Engineering Nanostructures by Binding Single Molecules to Single-Walled Carbon Nanotubes

05-12-2014 | J. Joseph Sharkey; Samuel D. Stranks; Jian Huang; Jack A. Alexander-Webber; Robin J. Nicholas, ACS Nano, 2014

Organic and hybrid organic–inorganic systems are promising candidates for low cost photovoltaics. Recently, perovskite-based systems have been attracting a large amount of research attention, where the highest performing devices employ a small molecule ...


Synthesis of butyl acrylate in a fixed‐bed adsorptive reactor over amberlyst 15

02-12-2014 | Dânia S.M. Constantino, Carla S.M. Pereira, Rui P. V. Faria, Alexandre F. P. Ferreira, José M. Loureiro, Alírio E. R ..., AIChE Journal, 2014

Abstract The butyl acrylate (BAc) synthesis from the esterification reaction of acrylic acid (AAc) with 1‐butanol in a fixed‐bed adsorptive reactor packed with Amberlyst 15 ion exchange resin was evaluated. Adsorption experiments were carried out with non‐reactive pairs at two temperatures ...


On the isobaric space of 25‐hydroxyvitamin D in human serum: potential for interferences in liquid chromatography/tandem mass spectrometry, systematic errors and accuracy issues

02-12-2014 | Yulin Qi, Timon Geib, Pascal Schorr, Florian Meier, Dietrich A. Volmer, Rapid Communications in Mass Spectrometry, 2014

RATIONALE Isobaric interferences in human serum can potentially influence the measured concentration levels of 25‐hydroxyvitamin D [25(OH)D], when low resolving power liquid chromatography/tandem mass spectrometry (LC/MS/MS) instruments and non‐specific MS/MS product ions are employed for ...


Controlling the Dominant Length Scale of Liquid–Liquid Phase Separation in Spin‐coated Organic Semiconductor Films

01-12-2014 | Jacobus J. van Franeker, Daniel Westhoff, Mathieu Turbiez, Martijn M. Wienk, Volker Schmidt, René A. J. Janssen, Advanced Functional Materials, 2014

Organic electronic devices are often made by solution processing a multi‐component ink. During solution processing, for example, via spin coating, the solvent evaporates and the solid components deposit on the substrate. The morphology of this layer can range from well‐mixed to extensively phase ...


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