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Preparation of Thermosensitive Hollow Imprinted Microspheres via Combining Distillation Precipitation Polymerization and Thiol‐ene Click Chemistry

12-12-2014 | Cong Guo, Bing Wang, Juanjuan Shan, Chinese Journal of Chemistry, 2014

Abstract Hollow molecular imprinted polymer microspheres were prepared by distillation precipitation polymerization with (S)‐(+)‐ibuprofen (S‐IBF) as template molecule and acrylamide (AM) as functional monomer. Using the silicon dioxide (SiO2, 180 nm) modified by 3‐(trimethoxysilyl)propyl ...

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Design, Synthesis and Characterization of Coordination Polymer from [Cu(DMF)4(SCN)2] as a Precursor

12-12-2014 | Xiaotong Liu, Feng Zhou, Qiuxuan Zhou, Lihua Wang, Yong Zhang, Qingfeng Xu, Jianmei Lu, Chinese Journal of Chemistry, 2014

Abstract This paper is focused on investigation of coordination polymers constructed by Cu(II) and rigid pyridyl ligands, such as 4,4′‐bipyridyl‐1,2,4‐triazole (Hpytz) and 1,10‐phenanthroline (phen) from a mononuclear precursor [Cu(DMF)4(NCS)2] (1). As expected, the complex was self‐assembled ...

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Erweiterung der Anwendungsbereiche für Flüssigkeitsringpumpen

12-12-2014 | Christoph Schreiber, Markus Kopf, Vakuum in Forschung und Praxis, 2014

Abstract Die Technologie der Flüssigkeitsringpumpe hat sich durch technische Weiterentwicklung und Optimierung auf spezielle Anwendungen einen festen Platz in der Technik gesichert. Dank der neuen Kreislaufaggregate sind jetzt Plug & Play Lösungen möglich. In der Kombination mit dem kompakten ...

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Multicomponent gas diffusion in non‐uniform tubes

12-12-2014 | Thomas Veltzke, Lars Kiewidt, Jorg Thöming, AIChE Journal, 2014

Abstract In many technical processes gas multicomponent diffusion takes place in confinements that are rarely uniform in direction of their long axis (e.g., catalysts pores). Here we show that in conical tubes multicomponent diffusion is hindered. This effect increases with ratio of inlet to ...

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Optimal design and operations of water supply chain networks for shale gas production: MILFP model and algorithms for the water‐energy nexus

12-12-2014 | Jiyao Gao, Fengqi You, AIChE Journal, 2014

Abstract The optimal design and operations of water supply chain networks for shale gas production is addressed. A mixed‐integer linear fractional programming (MILFP) model is developed with the objective to maximize profit per unit freshwater consumption, such that both economic performance ...

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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 ...

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Properties of aligned poly(L‐lactic acid) electrospun fibers

12-12-2014 | Bin Mao, Keifer Geers, Sophia Hu, Marlet Mancera, Myra Sandoval, Joshua Port, Yazhe Zhu, Peggy Cebe, Journal of Applied Polymer Science, 2014

ABSTRACT Poly(L‐lactic acid) (PLLA)‐aligned fibers with diameters in the nano‐ to micrometer size scale are successfully prepared using the electrospinning technique from two types of solutions, different material parameters and working conditions. The fiber quality is evaluated using scanning ...

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Evidence for Catalyst Association in the Catalyst Transfer Polymerization of Thieno[3,2-b]thiophene

12-12-2014 | Pieter Willot; Guy Koeckelberghs, Macromolecules, 2014

The performance of catalyst transfer polymerization (CTP) reactions which depend on catalyst association was studied on 3,6-dioctylthiothieno[3,2-b]thiophene (TT)-monomers. This monomer was selected because a strong association of the catalyst is expected, since the aromaticity of thienothiophene ...

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Structure and Properties of Citrate Overlayers Adsorbed at the Aqueous Au(111) Interface

12-12-2014 | Louise B. Wright; P. Mark Rodger; Tiffany R. Walsh, Langmuir, 2014

One of the most common means of gold nanoparticle (AuNP) biofunctionalization involves the manipulation of precursor citrate-capped AuNPs via ligand displacement. However, the molecular-level structural characteristics of the citrate overlayer adsorbed at the aqueous Au interface at neutral pH ...

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Influence of Attachment Strategy on the Thermal Stability of Hybridized DNA on Gold Surfaces

12-12-2014 | Tyler J. Petty; Caleb E. Wagner; Aric Opdahl, Langmuir, 2014

The thermal stabilities of double-stranded DNA hybrids immobilized on gold surfaces are shown to be significantly affected by the conformation of the hybrid. To analyze this behavior, DNA probes were immobilized using attachment strategies where the nucleotides within the strand had varying ...

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