Preparation and characterization of titanium dioxide nanocomposite fibers

Wei, Qufu; Yu, Liangyan; Mather, Robert Rhodes; Wang, Xueqian

doi:10.1007/s10853-007-1582-1

Cited by 26 publications

(8 citation statements)

References 9 publications

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“…1. Similar characterization methods were also been reported in our previous research articles on electrospun Zn coated PA6 nanofibers [30] and TiO 2 coated PP nanofibers [31]. According to Fig.…”

Section: Edx Analysissupporting

confidence: 82%

Ag-coated polyurethane fibers membranes absorbed with quinary fatty acid eutectics solid-liquid phase change materials for storage and retrieval of thermal energy

Ghulam

et al. 2016

Renewable Energy

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a b s t r a c tThe novel quinary fatty acid eutectic (CA-LA-MA-PA-SA) of capric acid, lauric acid, myristic acid, palmitic acid and stearic acid was successfully prepared with the mass ratio of 61.09/24.61/8.13/4.01/2.16. Thereafter, the innovative Ag-coated polyurethane (PU) fibers membranes with different concentrations of Ag, which were selected as a supporting material to adsorb the CA-LA-MA-PA-SA eutectics, were successfully fabricated through electrospinning followed by magnetron sputter. The energy dispersive Xray confirmed that Ag nanoclusters were successfully deposited on the surface of PU fibers as a result of sputter coating. The observations of atomic force microscope indicated that the surface roughness of the PU fibers significantly increased with increase in coating time. The scanning electron microscope images demonstrated that the CA-LA-MA-PA-SA eutectics were uniformly distributed into the three-dimensional porous structures of uncoated and Ag-coated PU fibers membranes. Furthermore, the differential scanning calorimeter curves suggested that the CA-LA-MA-PA-SA/PU/Ag composites phase change materials (PCMs) possessed melting enthalpies about 110 kJ/kg and melting temperature around 17 C. The absorption ratios of the CA-LA-MA-PA-SA eutectic in composite PCMs was approximately at 73.74%e83.18%. The investigation on thermal performance indicated that we achieved higher melting and freezing rates of the CA-LA-MA-PA-SA/PU/Ag composites PCMs by increasing coating time. In addition to this, after depositing Ag nanoparticles the melting and freezing times of composites PCMs were shortened to about 21%e65%.

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Section: Edx Analysissupporting

confidence: 82%

Ag-coated polyurethane fibers membranes absorbed with quinary fatty acid eutectics solid-liquid phase change materials for storage and retrieval of thermal energy

Ghulam

et al. 2016

Renewable Energy

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“…Instead of coating titanium dioxide particles on the substrates' surface, fibers were incorporated with titanium dioxide forming titanium dioxide-fiber composites. [69][70][71] Wei et al developed titanium dioxide-polypropylene nanocomposite fibers, wherein P-25 nanoparticles were mixed with polypropylene granules powder through tumbler mixer for 30 min, followed by extrusion from pilot-plant scale melt-extrusion equipment through melt-compounding under heat treatment at 230 C. 69 The nanocomposite fibers were found to contain titanium dioxide but the titanium dioxide coverage on polypropylene fiber surface was poor due to the extensive aggregation of titanium dioxide particles. Moreover, the photoactivity of such fibers could not be established as the work lacked quantification of the photocatalytic activity.…”

Section: Self-cleaning Synthetic Fibersmentioning

confidence: 99%

Self-cleaning fibers via nanotechnology: a virtual reality

2011

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With the fast-growing demand toward innovative functional and intelligent fibrous materials, the photocatalytic self-cleaning surface functionalization of fibers has universally aroused tremendous interest in recent years. Due to the promising properties of nanosized photosensitive substances in decomposing undesirable contaminants, intensive research has incessantly been conducted to explore their multi-functional properties and potential applications. This review paper intends to summarize recent developments of contemporary technologies, particularly emphasizing on the progress achieved in the past five years in the application of nanostructured titanium dioxide photocatalyst in fibrous materials. The fundamental concepts, limitation, societal impact and future prospects are also discussed.

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“…TiO 2 is attractive due to its availability, low cost, chemical stability, and optical, electronic, and UV absorbing properties. TiO 2 has been used for a variety of applications such as self cleaning, UV blocking, air purification, as photocatalysts, photovoltaic materials, gas sensors, optical coating, and biocompatible materials for bone implants . Hence, because of the stout practical applications of Ppy and also the biological properties of methyl anthranilate (MA), we synthesized novel copolymers and their nanocomposites with TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

Morphological, structural, molecular docking and biocidal studies of newly synthesized Ppy‐MA/TiO₂ nanocomposites

Nami

Arshad

Khan

et al. 2015

Polymers for Advanced Techs

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e The present paper describes the chemical oxidative polymerization of pyrrole and methyl anthranilate, Ppy-MA, in different molar ratios in high yields. The polymerization takes place in the presence of H 2 O 2 and FeSO 4 . Subsequently, electrically conducting nanocomposites Ppy-MA/TiO 2 were obtained by in situ chemical oxidative polymerization using TiO 2 nanoparticles in different molar ratios. The structure and morphology of black powdered copolymers, Ppy-MA, and their nanocomposites, Ppy-MA/TiO 2 , were ascertained using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy, transmission electron microscopy, X-ray differential, thermogravimetric analysis, and differential thermal analysis. These studies have shown that the nanocomposites, Ppy-MA/ TiO 2 , are thermally more stable, good electrical conductors as compared with their copolymers Ppy-MA.The copolymers Ppy-MA prepared from different monomer ratios and its nanocomposites Ppy-MA/TiO 2 have been screened for their possible in vitro antibacterial activity against Staphylococcus aureus (ATCC 29213), Streptococcus mutans (ATCC 25175), Streptococcus pyogenes (MTCC 435), Staphylococcus epidermidis (MTCC 435), Bacillus cereus (MTCC 430), Corynebacterium xerosis (ATCC 373), Acetobacter bovis (Clinical isolate), Escherichia coli (ATCC 25922), Klebsiella pneumoniae (MTCC 109), Proteus vulgaris (MTCC 426), and Pseudomonas aeruginosa (MTCC 424) using ciprofloxacin and gentamicin as standard drugs. Moreover, the anthelmintic activities of copolymers Ppy-MA and its nanocomposites Ppy-MA/TiO 2 have also been estimated against the standard drug, albendazole.

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Preparation and characterization of titanium dioxide nanocomposite fibers

Cited by 26 publications

References 9 publications

Ag-coated polyurethane fibers membranes absorbed with quinary fatty acid eutectics solid-liquid phase change materials for storage and retrieval of thermal energy

Ag-coated polyurethane fibers membranes absorbed with quinary fatty acid eutectics solid-liquid phase change materials for storage and retrieval of thermal energy

Self-cleaning fibers via nanotechnology: a virtual reality

Morphological, structural, molecular docking and biocidal studies of newly synthesized Ppy‐MA/TiO₂ nanocomposites

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Preparation and characterization of titanium dioxide nanocomposite fibers

Cited by 26 publications

References 9 publications

Ag-coated polyurethane fibers membranes absorbed with quinary fatty acid eutectics solid-liquid phase change materials for storage and retrieval of thermal energy

Ag-coated polyurethane fibers membranes absorbed with quinary fatty acid eutectics solid-liquid phase change materials for storage and retrieval of thermal energy

Self-cleaning fibers via nanotechnology: a virtual reality

Morphological, structural, molecular docking and biocidal studies of newly synthesized Ppy‐MA/TiO2 nanocomposites

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Morphological, structural, molecular docking and biocidal studies of newly synthesized Ppy‐MA/TiO₂ nanocomposites