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Preparation of dual‐layer acetylated methyl cellulose hollow fiber membranes via co‐extrusion using thermally induced phase separation and non‐solvent induced phase separation methods

25-Jul-2015 | Hanna Jang, Du‐Hyun Song, Hye‐Jin Lee, Seong‐Han Lim, In‐Chul Kim, Young‐Nam Kwon, Journal of Applied Polymer Science, 2015

ABSTRACT Dual‐layer acetylated methyl cellulose (AMC) hollow fiber membranes were prepared by coupling the thermally induced phase separation (TIPS) and non‐solvent induced phase separation (NIPS) methods through a co‐extrusion process. The TIPS layer was optimized by investigating the effects ...

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Reduction of Charge and Discharge Polarization by Cobalt Nanoparticles‐Embedded Carbon Nanofibers for Li–O2 Batteries

24-Jul-2015 | Yun‐Jung Kim, Hongkyung Lee, Dong Jin Lee, Jung‐Ki Park, Hee‐Tak Kim, ChemSusChem, 2015

The Cover picture shows a possible solution to the low round‐trip efficiencies of Li–O2 batteries (the most promising next‐generation battery) owed to the poor reversibility of the formation of the discharge product Li2O2 and the associated high polarization potentials. This can be achieved by ...

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A Hybrid Silica Nanoreactor Framework for Encapsulation of Hollow Manganese Oxide Nanoparticles of Superior T1 Magnetic Resonance Relaxivity

24-Jul-2015 | Benedict You Wei Hsu, Michael Ng, Yu Zhang, Siew Yee Wong, Kishore Bhakoo, Xu Li, John Wang, Advanced Functional Materials, 2015

A new hybrid nanoreactor framework with poly(ethylene oxide)‐perforated silica walls is designed to encapsulate hollow manganese oxide nanoparticles (MONs) of high distinctness and homogeneity. Achieved by an interfacial templating scheme, the nanoreactor ensures that acidic etching of MONs by ...

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Magnetic and pH‐responsive starch‐g‐poly(acrylic acid‐coacrylamide)/graphene oxide superabsorbent nanocomposites: one‐pot synthesis, characterization and swelling behavior

24-Jul-2015 | Hossein Hosseinzadeh, Sonia Ramin, Starch - Stärke, 2015

Abstract A series of dual stimuli‐responsive starch‐based superabsorbent nanocomposites (SANCs) were prepared by a facile one‐pot strategy. The SNACs were synthesized via the simultaneous formation of magnetic iron oxide nanoparticles (MIONs) and in situ radical solution polymerization of ...

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Fabrication of a novel cellulose acetate imprinted membrane assisted with chitosan‐wrapped multi‐walled carbon nanotubes for selective separation of salicylic acid from industrial wastewater

23-Jul-2015 | Minjia Meng, Zhihui He, Li Yan, Yongsheng Yan, Fengquan Sun, Yan Liu, Shijuan Liu, Journal of Applied Polymer Science, 2015

ABSTRACT Highly selective cellulose acetate (CA) blend imprinted membranes for salicylic acid (SA) removal were synthesized by phase inversion technique with chitosan as a functional polymer and chitosan‐wrapped multi‐walled carbon nanotubes (CHI‐wrapped MWCNTs) as the additives. The surface ...

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Copper Nanowires: A Substitute for Noble Metals to Enhance Photocatalytic H2 Generation

21-Jul-2015 | Shuning Xiao; Peijue Liu; Wei Zhu; Guisheng Li; Dieqing Zhang; Hexing Li, Nano Letters, 2015

Microwave-assisted hydrothermal approach was developed as a general strategy to decorate copper nanowires (CuNWs) with nanorods (NRs) or nanoparticles (NPs) of metal oxides, metal sulfides, and metal organic frameworks (MOFs). The microwave irradiation induced local “super hot” dots generated on ...

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Dual‐emissive polydiphenylsilane nanocomposite: effect of N,N′‐bis(4‐hydroxysalicylidene)‐1,2‐phenylenediamine‐Zn complex

20-Jul-2015 | Liviu Sacarescu, Corneliu Cojocaru, Rodinel Ardeleanu, Maria Fortuna, Gabriela Sacarescu, Mihaela Simionescu, Polymers for Advanced Technologies, 2015

The fluorescence properties of polysilane can be strongly influenced by creating new excited states that involve electronic transitions and the relaxation to the ground state. This work presents the optical effects obtained by doping a specially designed polydiphenylsilane copolymer with Zn ...

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Interaction of Hyaluronan with Cationic Nanoparticles

20-Jul-2015 | Fouzia Bano; Mónica Carril; Paolo Di Gianvincenzo; Ralf P. Richter, Langmuir, 2015

The polysaccharide hyaluronan (HA) is a main component of peri- and extracellular matrix, and an attractive molecule for materials design in tissue engineering and nanomedicine. Here, we study the morphology of complexes that form upon interaction of nanometer-sized amine-coated gold particles ...

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Impact of electrospinning process parameters on the measured current and fiber diameter

17-Jul-2015 | Siavash Sarabi‐Mianeji, Jennifer Scott, Danny J.Y.S. Pagé, Polymer Engineering and Science, 2015

In this article, polycaprolactone (PCL) nanofibres were processed by electrospinning using a 3:1 ratio of tetrahydrofuran to methanol as solvent. The solvent choice was motivated by the possibility of greener alternatives to the halogenated compounds most often used for electrospinning. The ...

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Surface micromorphology of dental composites [CE‐TZP]‐[Al2O3] with Ca+2 modifier

17-Jul-2015 | Sofia Berezina, Alla Alexandrovna Il'icheva, Lyudmila Ivanovna Podzorova, Ştefan Ţălu, Microscopy Research and Technique, 2015

ABSTRACT The objective of this study was to characterize the three‐dimensional (3D) surface micromorphology of the ceramics produced from nanoparticles of alumina and tetragonal zirconia (t‐ZrO2) with addition of Ca+2 for sintering improvement. The 3D surface roughness of samples was studied ...

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