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Two-dimensional structure Au nanosheets are super active for the catalytic reduction of 4-nitrophenol

21-May-2015 | Yan Zhang; Zhimin Cui; Lidong Li; Lin Guo; Shihe Yang, Physical Chemistry Chemical Physics, 2015

Two-dimensional structure Au nanosheets with a polygon morphology and controlled thicknesses of [[similar]] 15 nm, [[similar]] 35 nm, and [[similar]] 50 nm were successfully synthesized by a one-step solution reduction method. Scanning and transmission electron microscopy (SEM and TEM), ...

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Preparation and characterization of polyelectrolyte/silver multilayer films on PET substrates and its antibacterial property

15-May-2015 | Deshan Cheng, Xia Lin, Lingling Fan, Guangming Cai, Jihong Wu, Weidong Yu, Polymer Composites, 2015

Silver nanoparticles (AgNPs) were synthesized by a chemical reduction method that reduced silver nitrate with sodium borohydride. Hydrolysis of poly(ethylene terephthalate) (PET) in concentrated alkaline solution produced a carboxyl‐enriched surface. The ultrathin multilayer films were ...

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Preparation and characterization of poly(ethylene oxide)‐loaded hydroxypropyl‐β‐cyclodextrin nanofibers

15-May-2015 | M. Forhad Hossain, R. Hugh Gong, Muriel Rigout, Polymers for Advanced Technologies, 2015

Hydroxypropyl‐β‐cyclodextrin (HP‐β‐CD) is a modified β‐cyclodextrin (β‐CD) derivative, which is toxicologically harmless to mammals and other animals. HP‐β‐CD is electrospun from an aqueous solution by blending with a non‐toxic, biocompatible, synthetic polymer poly(ethylene oxide) (PEO). ...

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Semi‐analytical solution for power‐law polymer solution flow in a converging annular spinneret

15-May-2015 | Yi‐Rui Chen, Liang‐Hsun Chen, Kuo‐Lun Tung, Yu‐Ling Li, Yu‐Shao Chen, Che‐Chia Hu, Ching‐Jung Chuang, AIChE Journal, 2015

Abstract A semi‐analytical solution for a power‐law fluid flowing through a conical annulus was derived to estimate the velocity profile in the axial direction, the shear rate and the elongation rate within a spinneret during the spinning of hollow fiber membranes. The angle coefficient was ...

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Crystallization behavior and mechanical properties of an electrospun ethanol‐mediated poly(ethylene terephthalate) fibrous membrane

14-May-2015 | Li‐Na Wang, Yan‐Wei Wang, Wen‐Tao Liu, Xue‐Lian Xia, Su‐Qin He, Hao Liu, Cheng‐Shen Zhu, Journal of Applied Polymer Science, 2015

ABSTRACT A simple approach for preparing electrospun poly(ethylene terephthalate) (PET) fibrous membranes with excellent spinnability and mechanical properties is introduced in this article. To enhance the electrospinnability of PET, a small content of ethanol was incorporated into a 16 wt % ...

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Effect of thermal oxidation on electrochemical corrosion behaviour of ZrTi alloys for dental applications

14-May-2015 | D. Mareci, G. Bolat, B. Istrate, C. Munteanu, A. Cailean, Materials and Corrosion, 2015

Electrochemical behaviour of Zr5Ti, Zr25Ti and Zr45Ti, with and without surface modification were investigated for dental applications. All untreated and thermal oxidized alloys in Na2CO3 at 890 °C were tested by electrochemical impedance spectroscopy (EIS) performed in 10% carbamide peroxide ...

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Microstructure and corrosion resistance behavior of Cr‐Nb alloyed layer on low carbon steel

14-May-2015 | Y.‐M. Zhu, P.‐Z. Zhang, X.‐F. Wei, D.‐B. Wei, X.‐H. Chen, P. Zhou, Materials and Corrosion, 2015

The Cr‐Nb alloyed layer formed on the surface of low carbon steel by double glow plasma surface alloying could improve the corrosion resistance of the substrate. The morphology and microstructure of the layer were investigated by scanning electron microscopy, energy dispersive spectrometer and ...

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Diamond crystals deposited from interacting jets

13-May-2015 | Aleksey Rebrov, Aleksey Emelyanov, Sergey Kosolobov, Ivan Yudin, physica status solidi (c), 2015

Abstract This paper describes the advancement of hot wire or hot filament CVD methods of diamond synthesis through the use high velocity gas flow activation by multiple collisions with a lengthy hot surface instead of activation by single collisions with hot wires. The possibility of synthesis ...

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Self‐Assembled, Millimeter‐Sized TIPS‐Pentacene Spherulites Grown on Partially Crosslinked Polymer Gate Dielectric

07-May-2015 | Hocheon Yoo, Hyun Ho Choi, Tae Joo Shin, Taiuk Rim, Kilwon Cho, Sungjune Jung, Jae‐Joon Kim, Advanced Functional Materials, 2015

Here, a highly crystalline and self‐assembled 6,13‐bis(triisopropylsilylethynyl) pentacene (TIPS‐Pentacene) thin films formed by simple spin‐coating for the fabrication of high‐performance solution‐processed organic field‐effect transistors (OFETs) are reported. Rather than using semiconducting ...

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Preparation and characterization of konjac glucomannan‐acrylic acid‐diatomite composites

07-May-2015 | Jianfu Chen, Weiying Zhang, Xiao Li, Polymer Composites, 2015

A novel konjac glucomannan (KGM)‐acrylic acid‐diatomite composite (KGAD) was synthesized by the solution polymerization of partially neutralized acrylic acid (AA) on to KGM and diatomite (DT), using potassium persulfate as a free radical initiator, in the presence of Trimethylolpropane ...

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