The structure and mechanical property of silane-grafted-polyethylene/SiO 2 nanocomposite fiber rope

Yu, Wenwen; Shi, Jiangao; Chen, Xiaoxue; Min, Minghua; Wang, Lei; Liu, Yongli

doi:10.1016/j.aaf.2017.01.003

Cited by 20 publications

(2 citation statements)

References 20 publications

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“…Much evidence indicated that the antibacterial activity of nanoparticles was attributed to the disruption of bacterial membranes ( Kaweeteerawat et al, 2015 ), production of reactive oxygen species (ROS) ( Wang et al, 2017 ), and/or interference with the bacterial metabolism ( Xiu et al, 2012 ). Previous studies also reported that nano-silica exhibited certain antibacterial effects ( Yu et al, 2017 ; Priyadarsini et al, 2018 ). The results of this study indicate that the strong reactive oxygen species (ROS) in GAT-SiO 2 NPs may be related to bactericidal activity.…”

Section: Resultsmentioning

confidence: 85%

Design of a Controlled-Release Delivery Composite of Antibacterial Agent Gatifloxacin by Spherical Silica Nanocarrier

Guo

Zhang

et al. 2022

Front. Chem.

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In this study, a spherical silica nanoparticle was explored as a gatifloxacin carrier synthesized by the chemical precipitation method. It was found that there was no new chemical bond formation during the loading process between gatifloxacin and silica, which implies that the binding was driven by physical interaction. In addition, the drug loading and encapsulation efficiency could be improved by appropriately increasing nano-silica content in the loading process. Meanwhile, the release rate of gatifloxacin after loading nano-silica was also improved, suggesting the successful design of a controlled-release delivery composite. The silica nanocarrier could significantly improve the antibacterial performance of Escherichia coli by 2.1 times, which was higher than the pure gatifloxacin. The 24 h bacteriostatic rate was higher than that of a simple mixture of silica nanoparticles and gatifloxacin. Strong reactive oxygen species (ROS) in GAT-SiO2 NPs suggests that ROS might be associated with bactericidal activity. The synergy between the physicochemical effect and ROS production of this material is proposed as the mechanism of its antibacterial activity, which can also be confirmed by the cell membrane damage observed under electron microscopy and DNA damage experiments. Collectively, our finding indicates that nano-silica microspheres could serve as a promising carrier for the sustained release of gatifloxacin, thereby providing a new carrier design scheme for the improvement of the antibacterial effect.

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Section: Resultsmentioning

confidence: 85%

Design of a Controlled-Release Delivery Composite of Antibacterial Agent Gatifloxacin by Spherical Silica Nanocarrier

Guo

Zhang

et al. 2022

Front. Chem.

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“…In all spectra, one can observe strong absorptions bands at 2920 and 2850 cm −1 that are assigned to the stretching vibration of CH 2 methylene groups from the EPC host matrix [ 26 , 31 ]. Moreover, the absorption band at 1460 cm −1 corresponded to the bending deformation of C–H [ 32 , 33 ]. In turn, in the case of nanocomposites, there is a new peak from Si–O vibration at 1100 cm −1 that confirms the interactions between SiO 2 and EPC phases.…”

Section: Resultsmentioning

confidence: 99%

The Role of Interfacial Interactions on the Functional Properties of Ethylene–Propylene Copolymer Containing SiO2 Nanoparticles

et al. 2020

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In this paper, the mechanical properties, thermal stability, and transparency of ethylene–propylene copolymer (EPC) elastomer modified with various weight percentages (1, 3, and 5 wt.%) of SiO2 nanofillers have been studied. The nanocomposites were prepared via a simple melt mixing method. The morphological results revealed that the nanofillers were uniformly dispersed in the elastomer, where a low concentration of SiO2 (1 wt.%) had been added into the elastomer. The FTIR showed that there are interfacial interactions between EPC matrix and silanol groups of SiO2 nanoparticles. Moreover, by the addition of 1 wt.% of SiO2 in the EPC, the tensile strength and elongation at break of EPC increased by about 38% and 27%, respectively. Finally, all samples were optically transparent, and the transparency of the nanocomposites reduced by increasing the content of SiO2 nanoparticles.

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Facile precipitation synthesis of pure Fe3O4/CoWO4 nanocomposites and investigation of their photocatalyst and antimicrobial activity

Maddah

Kashi

Akbari

2018

J Mater Sci: Mater Electron

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The structure and mechanical property of silane-grafted-polyethylene/SiO 2 nanocomposite fiber rope

Cited by 20 publications

References 20 publications

Design of a Controlled-Release Delivery Composite of Antibacterial Agent Gatifloxacin by Spherical Silica Nanocarrier

Design of a Controlled-Release Delivery Composite of Antibacterial Agent Gatifloxacin by Spherical Silica Nanocarrier

The Role of Interfacial Interactions on the Functional Properties of Ethylene–Propylene Copolymer Containing SiO2 Nanoparticles

Facile precipitation synthesis of pure Fe3O4/CoWO4 nanocomposites and investigation of their photocatalyst and antimicrobial activity

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