Effects of flower-like ZnO nanowhiskers on the mechanical, thermal and antibacterial properties of waterborne polyurethane

Ma, Xue-Yong; Zhang, Wei-De

doi:10.1016/j.polymdegradstab.2009.03.024

Cited by 201 publications

(77 citation statements)

References 38 publications

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“…ZnO nanoparticles with modified properties might have a potential application as an efficient antibacterial material, since a number of researchers have reported that ZnO has an antibacterial effect. [11][12][13][14] This effect is increased with the increase of c value as revealed by Yamamoto et al 11 This slight change in the crystal structure of ZnO due to the increase in c value has a great effect on the amount of H 2 O 2 generated from the surface of ZnO crystals, which in turn is effective for the inhibition of bacterial growth. 11 Moreover, this material was reported to show antibacterial activity in the neutral region (pH 7) without the presence of light.…”

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confidence: 91%

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High-energy ball milling technique for ZnO nanoparticles as antibacterial material

Salah¹,

Habib²,

Khan³

et al. 2011

IJN

223

107

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Nanoparticles of zinc oxide (ZnO) are increasingly recognized for their utility in biological applications. In this study, the high-energy ball milling (HEBM) technique was used to produce nanoparticles of ZnO from its microcrystalline powder. Four samples were ball milled for 2, 10, 20, and 50 hours, respectively. The structural and optical modifications induced in the ‘as synthesized’ nanomaterials were determined by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), and photoluminescence emission spectra (PL). SEM and TEM results show a gradual decrease in particle size from around 600 to ∼30 nm, with increased milling time. The initial microstructures had random shapes, while the final shape became quite spherical. XRD analysis showed ZnO in a hexagonal structure, broadening in the diffracted peaks and going from larger to smaller particles along with a relaxation in the lattice constant c . The value of c was found to increase from 5.204 to 5.217 Å with a decrease in particle size (600 to ∼30 nm). PL result showed a new band at around 365 nm, whose intensity is found to increase as the particles size decreases. These remarkable structural and optical modifications induced in ZnO nanoparticles might prove useful for various applications. The increase in c value is an important factor for increasing the antibacterial effects of ZnO, suggesting that the HEBM technique is quite suitable for producing these nanoparticles for this purpose.

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confidence: 91%

“…10 ZnO is, therefore, recognized for its utility in biological applications as an antibacterial material. [11][12][13][14] Efforts have been focused on the synthesis and modification of ZnO particles for different applications. Different forms of ZnO nanostructures such as nanowires, submit your manuscript | www.dovepress.com…”

Section: Introductionmentioning

confidence: 99%

High-energy ball milling technique for ZnO nanoparticles as antibacterial material

Salah¹,

Habib²,

Khan³

et al. 2011

IJN

223

107

View full text Add to dashboard Cite

show abstract

“…There are many reports on synthesis, growth kinetics, crystallisation of ZnO, and its applications. Among various nanoforms, one-dimensional oriented nanostructures, such as nanorods, nanowires, nanotubes and nanopins, are very important because of enormous commercial applications [3][4][5][6][7][8][9][10][11]. To achieve high performance of these devices, metal oxides are used in these applications.…”

Section: Introductionmentioning

confidence: 99%

A study of ZnO nanoparticles and ZnO-EG nanofluid

Singh¹,

Pandey²,

Yadav

et al. 2013

Journal of Experimental Nanoscience

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This study deals with the synthesis and characterisation of ZnO nanoparticles and suspension of ZnO-ethylene glycol (EG) nanofluid. Crystalline ZnO nanoparticles are synthesised using the chemical method. The nanofluids were synthesised by the dispersion of ZnO nanoparticles in EG solution using an ultrasonicator. The prepared ZnO nanoparticles are characterised by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and UV-Vis absorption spectrum. The particle size distribution and ultrasonic parameters of the synthesised nanofluid are measured with the help of acoustic particle sizer (APS-100) and ultrasonic interferometer. The observed features of ZnO nanoparticles and ZnO-EG nanofluids are discussed in correlation with known properties of other nanofluids.

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“…This behavior was explained by the agglomeration of fillers which cause stress points in the formed material 24,31,32 . Figure 6 shows the micrographs of the pure APE and the APE/TiO 2 (1, 3, 5% w/w).…”

Section: Tio 2 (%)mentioning

confidence: 99%

Preparation and properties of aromatic polyester/TiO2 nanocomposites from polyethylene terephthalate

et al. 2016

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Effects of flower-like ZnO nanowhiskers on the mechanical, thermal and antibacterial properties of waterborne polyurethane

Cited by 201 publications

References 38 publications

High-energy ball milling technique for ZnO nanoparticles as antibacterial material

High-energy ball milling technique for ZnO nanoparticles as antibacterial material

A study of ZnO nanoparticles and ZnO-EG nanofluid

Preparation and properties of aromatic polyester/TiO2 nanocomposites from polyethylene terephthalate

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