Metallopolymer Nanocomposites

Pomogailo, A. D.; Kestelman, V. N.

doi:10.1007/b137740

Cited by 138 publications

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“…Nanotechnology has shown great potential recently in the pharmaceutical and biomedical fields and is considered a revolutionary approach to the prevention and treatment of diseases . Nanotechnology plays an important role in targeted drug delivery systems (TDDSs), and many types of nanocarriers are involved in the TDDSs, such as carbon nanotubes, fullerenes, liposomes, and polymer nanocomposites (PNCs).…”

Section: Introductionmentioning

confidence: 99%

Garlic oil–loaded PLGA nanoparticles with controllable size and shape and enhanced antibacterial activities

Fahmy

Mamdouh

2018

J of Applied Polymer Sci

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The present work focuses on producing polymer composite nanoparticles (NPs) composed of garlic oil (GO) and poly (lactic-co-glycolic) acid (PLGA) by the single emulsion/solvent evaporation (SE/SE) method and high-speed homogenizing. Different preparation parameters were found to greatly affect the stability and size uniformity of the prepared PLGA/GO NP formulations, which were carefully controlled. Scanning electron microscopy, Fourier transform infrared spectroscopy, and UV-vis spectroscopy and dynamic light scattering and zeta potential were used to characterize the NPs. Antibacterial assessment of the prepared PLGA/GO NPs against E. coli and S. aureus was carried out. Interestingly, the NP size ranged between 201 and 319 nm, which is 10 times less than the size of the regular GO particles in bulk solution. The antibacterial activities show enhancement by 70-78% of bacterial inhibition compared with a GO bulk solution. This work sheds light on the potential use of GO NP formulations as nanobiotics and the critical NP preparation parameters that need to be considered.

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Section: Introductionmentioning

confidence: 99%

Garlic oil–loaded PLGA nanoparticles with controllable size and shape and enhanced antibacterial activities

Fahmy

Mamdouh

2018

J of Applied Polymer Sci

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“…[3,16,17] The resulting class of materials, namely metal-polymer nanocomposites, has been the subject of many experimental and theoretical studies in recent years. [18][19][20][21][22][23] They are of particular interest because the interplay between their constituents with contrasting properties may lead to new functional applications, [24][25][26] and they offer the potential for high-quantity and low-cost fabrication with reproducible properties. [27] The most challenging aspect of the computational treatment of such systems is the fact that typical physical vapour deposition processes take several seconds or minutes.…”

Section: Introductionmentioning

confidence: 99%

Molecular dynamics simulation of Ag–Cu cluster growth on a thin polymer film

Abraham

Bönitz

2018

Contributions to Plasma Physics

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We present molecular dynamics (MD) simulation results for the growth of silver–copper nanoparticles on a polymeric surface during sputter deposition. The simulation procedure extends a previous implementation for gold nanoparticles to bimetallic nanoparticles. Making use of an accelerated version of MD, the timescales of the simulations become comparable to those of an actual deposition process, which may take several minutes in experiments. While silver and copper are known to be immiscible in the bulk, we trace the concentration profiles of Ag and Cu atoms in the clusters for film thicknesses up to 1.8 nm and are thus able to investigate the early stages of phase separation on the nanoscale.

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“…First of all, it is explained by their unique optical, electronic, catalytic and other properties, which sharply distinguish them from their analogs -microscale objects. Therefore, the hybrid materials containing silver nanoparticles are perspective for development of catalytic systems and also for use in optoelectronics and nanophotonics 3,4 . Furthermore, nanocomposite materials with silver nanoparticles are widely applied as effective antibacterial and antiviral medicines [5][6][7][8][9][10] .…”

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confidence: 99%

Effect of the type of reducing agents of silver ions in interpolyelectrolyte-metal complexes on the structure, morphology and properties of silver-containing nanocomposites

Demchenko

Riabov

Kobylinskyi

et al. 2020

Sci Rep

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The objective of this work is to study the peculiarities of structural organization, morphology, thermomechanical, electrical and antimicrobial properties of nanocomposites based on pectinpolyethyleneimine interpolyelectrolyte complexes and silver nanoparticles in dependence on the type of reducing agent being applied for chemical reduction of silver ions in the interpolyelectrolyte-metal complexes. The average size of Ag nanoparticles is shown to be increased with decreasing of the activity of reducing agent (E 0 ) and equals to 3.8 nm, 4.3 nm, and 15.8 nm, respectively, when engaging sodium borohydride (-1.24 V), hydrazine (-1.15 V) and ascorbic acid (-0.35 V). Moreover, it was found that the crystallite size of Ag nanoparticles also had the smallest value for nanocomposites obtained involving NaBH 4 as reducing agent. Ag-containing nanocomposites prepared by reduction of silver ions in interpolyelectrolyte-metal complexes while applying a range of reducing agents are characterized by different electrical properties and polymer matrix' glass transition temperature. The influence of silver nanoparticles' size incorporated in the polymer matrix on the antimicrobial activity of nanocomposites has been established. The inhibition zone diameter of Staphylococcus aureus and Escherichia coli was higher for nanocomposites obtained using sodium borohydride and hydrazine compared to nanocomposites where ascorbic acid was used as the reducing agent.

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Metallopolymer Nanocomposites

Cited by 138 publications

References 0 publications

Garlic oil–loaded PLGA nanoparticles with controllable size and shape and enhanced antibacterial activities

Garlic oil–loaded PLGA nanoparticles with controllable size and shape and enhanced antibacterial activities

Molecular dynamics simulation of Ag–Cu cluster growth on a thin polymer film

Effect of the type of reducing agents of silver ions in interpolyelectrolyte-metal complexes on the structure, morphology and properties of silver-containing nanocomposites

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