Synthesis and characterization of polyaniline nanofiber/TiO2 nanoparticles hybrids

Prastomo, Niki; Ayad, Mohamad M.; Kawamura, Go; Matsuda, Atsunori

doi:10.2109/jcersj2.119.342

Cited by 12 publications

(5 citation statements)

References 20 publications

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“…In all of these fields a strong correlation has been found between nanofiber mat morphology and performance. Nanofiber morphology features such as fiber diameter, orientation, and mesh hole size (pore size) have been shown to correlate strongly with mechanical properties [13–15], surface area to volume ratios (influencing catalytic efficiency [16,17], signal to noise ratios in biosensors [18,19], and filtration efficiency [20]), and in tissue engineering to determine cell morphology [21–23], phenotype [24,25], and differentiation [26,27]. Thus, there is a need for characterization tools of the scaffolds that can quickly and accurately assess these fiber properties.…”

Section: Introductionmentioning

confidence: 99%

DiameterJ: A validated open source nanofiber diameter measurement tool

et al. 2015

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Despite the growing use of nanofiber scaffolds for tissue engineering applications, there is not a validated, readily available, free solution for rapid, automated analysis of nanofiber diameter from scanning electron microscope (SEM) micrographs. Thus, the goal of this study was to create a user friendly ImageJ/FIJI plugin that would analyze SEM micrographs of nanofibers to determine nanofiber diameter on a desktop computer within 60 seconds. Additional design goals included 1) compatibility with a variety of existing segmentation algorithms, and 2) an open source code to enable further improvement of the plugin. Using existing algorithms for centerline determination, Euclidean distance transforms and a novel pixel transformation technique, a plugin called “DiameterJ” was created for ImageJ/FIJI. The plugin was validated using 1) digital synthetic images of white lines on a black background and 2) SEM images of nominally monodispersed steel wires of known diameters. DiameterJ analyzed SEM micrographs in 20 seconds, produced diameters not statistically different from known values, was over 10-times closer to known diameter values than other open source software, provided hundreds of times the sampling of manual measurement, and was hundreds of times faster than manual assessment of nanofiber diameter. DiameterJ enables users to rapidly and thoroughly determine the structural features of nanofiber scaffolds and could potentially allow new insights to be formed into fiber diameter distribution and cell response.

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Section: Introductionmentioning

confidence: 99%

DiameterJ: A validated open source nanofiber diameter measurement tool

et al. 2015

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“…However, the use of PANI powders could be limited by the polymer surface area. To overcome these limitations, using nanostructured PANI or incorporating functional materials, inorganic metal oxide nanoparticles, heteropolyacidic anions, etc . The principle is based on the chelating properties attributed to the electron‐donating groups (large number of amine and imine functional groups) on the PANI polymers .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of novel polyaniline/MgO composite for enhanced adsorption of reactive dye

Pandiselvi

Manikumar

Thambidurai

2013

J of Applied Polymer Sci

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In this investigation, the porous structure of polyaniline/MgO (PANI/MgO) composites has been successfully synthesized by in-situ oxidative polymerization method. The as-prepared materials were characterized by Ultraviolet-visible absorption spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy. The obtained composites, for the first time, are used as an adsorbent for the removal of the sulfonated anionic dye reactive orange 16 (RO) from aqueous solution. The equilibrium adsorption isotherms of RO on the PANI/MgO composites were analyzed by Langmuir and Freundlich models, suggesting that the Langmuir model provides the better correlation of the experimental data and maximum adsorption capacity was found to be 558.4 mg g 21 . In addition, adsorption kinetics was followed by both pseudo-first-order and pseudo-second-order, but the latter model matches the results much better than the former one.

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“… TEM micrographs of raw materials: ( a ) TiO 2 rutile nm [ 26 ], ( b ) TiO 2 rutile µm [ 27 ], ( c ) TiO 2 anatase nm [ 28 ], ( d ) TiO 2 anatase µm [ 29 ], ( e ) CaF 2 nm, and ( f ) SiC nm [ 30 ]. …”

Section: Figurementioning

confidence: 99%

The Effect of Accelerated Aging on the Molecular Weight and Thermal and Mechanical Properties of Polyester Yarns Containing Ceramic Particles

2023

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The accelerated aging of polyethylene terephthalate (PET) multifilament yarns containing nano or microparticles of titanium dioxide (TiO2), silicon carbide (SiC), or fluorite (CaF2) at a maximum percentage of 2% has been studied. For this, the yarn samples were introduced into a climatic chamber at 50 °C, 50% relative humidity, and an ultraviolet A (UVA) irradiance of 1.4 W/m2. They were then removed from the chamber after periods of between 21 and 170 days of exposure. Subsequently, the variation in weight average molecular weight, number molecular weight, and polydispersity was evaluated by gel permeation chromatography (GPC), the surface appearance was evaluated using scanning electron microscopy (SEM), the thermal properties were evaluated using differential scanning calorimetry (DSC), and the mechanical properties were evaluated using dynamometry. The results showed that, at the test conditions, there was degradation in all of the exposed substrates, possibly due to the excision of the chains that make up the polymeric matrix, which resulted in the variation in the mechanical and thermal properties depending on the type and size of the particle used. This study provides insight into the evolution of the properties of PET-based nano- and microcomposites and might be helpful when selecting materials for specific applications, which is of great interest from an industrial point of view.

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Synthesis and characterization of polyaniline nanofiber/TiO2 nanoparticles hybrids

Cited by 12 publications

References 20 publications

DiameterJ: A validated open source nanofiber diameter measurement tool

DiameterJ: A validated open source nanofiber diameter measurement tool

Synthesis of novel polyaniline/MgO composite for enhanced adsorption of reactive dye

The Effect of Accelerated Aging on the Molecular Weight and Thermal and Mechanical Properties of Polyester Yarns Containing Ceramic Particles

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