10.05.2013 | S. García; J. J. Pis; F. Rubiera; C. Pevida, Langmuir, 2013

We present experimentally measured adsorption isotherms of CO2, H2, and N2 on a phenol–formaldehyde resin-based activated carbon, which had been previously synthesized for the separation of CO2 in a precombustion capture process. The single component adsorption isotherms were measured in a ...

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09.05.2013 | Elad Gross; Elishama Sorek; Arumugam Murugadoss; Micha Asscher, Langmuir, 2013

The morphology and surface elemental composition of Au–Pd bimetallic nanoclusters are reported to be sensitive to and affected by reduced silicon defect sites and structural corrugation on SiO2/Si(100), generated by argon ion sputtering under ultrahigh vacuum (UHV) conditions. Metastable ...

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09.05.2013 | Nathan J. Lang; Biwu Liu; Xu Zhang; Juewen Liu, Langmuir, 2013

An ideal colloidal system should be highly stable in a diverse range of buffer conditions while still retaining its surface accessibility. We recently reported that dispersing citrate-capped gold nanoparticles (AuNPs) in polymers, such as polyethylene glycol (PEG), can achieve such a goal ...

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08.05.2013 | Zulamita Zapata-Benabithe; Francisco Carrasco-Marín; Juan de Vicente; Carlos Moreno-Castilla, Langmuir, 2013

Carbon xerogels in the form of microspheres and monoliths were obtained from the sol–gel polymerization of resorcinol and formaldehyde in the presence of potassium carbonate as catalyst, using water as solvent and two different molar dilution ratios. The objectives of this study were as ...

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08.05.2013 | R. M. Charin; M. Nele; F. W. Tavares, Langmuir, 2013

Water–heptane/toluene model emulsions were prepared to study emulsion transitional phase inversion by in situ near-infrared spectroscopy (NIR). The first emulsion contained a small amount of ionic surfactant (0.27 wt % of sodium dodecyl sulfate) and n-pentanol as a cosurfactant. In this ...

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07.05.2013 | Benjamin T. Cheesman; Alexander J. G. Neilson; Joshua D. Willott; Grant B. Webber; Steve Edmondson; Erica J. Wanless, Langmuir, 2013

Coatings consisting of polymer brushes are an effective way to modify solid interfaces. Polymer brush-modified hybrid particles have been prepared by surface-initiated activators regenerated by electron transfer atom transfer radical polymerization (SI-ARGET ATRP) of 2-(diethylamino)ethyl ...

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03.05.2013 | Zhiyuan Ma; Xin Jia; Jiamei Hu; Guoxiang Zhang; Feng Zhou; Zhiyong Liu; Heyun Wang, Langmuir, 2013

Dual-responsive capsules sensitive to pH and temperature changes were successfully prepared by grafting random copolymer brushes of 2-(2-methoxyethoxy)ethyl methacrylate (MEO2MA) and oligo(ethylene glycol) methacrylate (OEGMA) from polydopamine (Pdop)-coated SiO2 via a surface-initiated ...

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02.05.2013 | B.-C. Choi; S. Choi; D. E. Leckband, Langmuir, 2013

The topography of poly (N-isopropyl acrylamide) brushes end-grafted from initiator-terminated monolayers was imaged by atomic force microscopy, as a function of the area per chain and of solvent quality. Measurements were done in air and in water, below and above the lower critical solution ...

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23.04.2013 | Clara Morita; Yoshiro Imura; Tetsuya Ogawa; Hiroki Kurata; Takeshi Kawai, Langmuir, 2013

A heat-induced viscosity transition of novel worm-like micelles of a long alkyl-chain amidoamine derivative (C18AA) bearing intermolecular hydrogen-bonding group was investigated by cryo-TEM, FT-IR, and rheological measurements. At lower temperature, C18AA forms straight elongated micelles ...

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23.04.2013 | Danqing Liu; Cees W. M. Bastiaansen; Jaap M. J. den Toonder; Dirk J. Broer, Langmuir, 2013

In this Article, we report on our approaches to creating responsive hydrogel coatings with surfaces that can be switched between a close to flat state and a state with a predesigned topographic pattern. The trigger is either temperature or, indirectly, light. The hydrogel coatings are based ...

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