Production by In Situ Polymerization and Properties of Composite Materials Based on Polypropylene and Hybrid Carbon Nanofillers

Палазник, О. М.; Недорезова, П. М.; Польщиков, С. В.; Klyamkina, A. N.; Шевченко, В. Г.; Крашенинников, В. Г.; Монахова, Т. В.; Арбузов, А. А.

doi:10.1134/s1560090419020088

Cited by 7 publications

(3 citation statements)

References 33 publications

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“…This indicates that graphene oxide is essential to MWCNTs/UFP coating because it enables the substrate to resist alkali conditions. Palaznik et al [48] have investigated the electrodynamic properties and the percolation threshold of composite materials based on polypropylene (PP) and a combination of carbon nanoparticles (graphene particles and carbon nanotubes). This composite polymer was synthesized In terms of its physical-mechanical properties, several parameters have been studied including adhesion and hardness.…”

Section: Binary Filler-based Nanocompositesmentioning

confidence: 99%

“…Palaznik et al [48] have investigated the electrodynamic properties and the percolation threshold of composite materials based on polypropylene (PP) and a combination of carbon nanoparticles (graphene particles and carbon nanotubes). This composite polymer was synthesized by in situ polymerization mediated by the metallocene Me2Si(2-Me-4-PhInd)2ZrCl2 activated by methylaluminoxane (MAO) which resulted in a high molecular weight PP.…”

Section: Binary Filler-based Nanocompositesmentioning

confidence: 99%

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Ultrasonically Induced Polymerization and Polymer Grafting in the Presence of Carbonaceous Nanoparticles

Cohen¹,

Zelikman

Suckeveriene³

2020

Processes

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Nanotechnology refers to technologies using at least one nanometric dimension. Most advances have been in the field of nanomaterials used in research and industry. The vast potential of polymeric nanocomposites for advanced materials and applications such as hybrid nanocomposites with customized electrical conductivity, anti-bacterial, anti-viral, and anti-fog properties have attracted considerable attention. The number of studies on the preparation of nanocomposites in the presence of carbon materials, i.e., carbon nanotubes (CNTs) and graphene, has intensified over the last decade with the growing interest in their outstanding synergic properties. However, the functionality of such nanocomposites depends on overcoming three key challenges: (a) the breakdown of nanoparticle agglomerates; (b) the attachment of functional materials to the nanoparticle surfaces; and (c) the fine dispersion of functional nanoparticles within the polymeric matrices. Ultrasonic polymerization and grafting in the presence of nanoparticles is an innovative solution that can meet these three challenges simultaneously. These chemical reactions are less well known and only a few research groups have dealt with them to date. This review focuses on two main pathways to the design of ultrasonically induced carbon-based nanocomposites: the covalent approach which is based on the chemical interactions between the carbon fillers and the matrix, and the non-covalent approach which is based on the physical interactions.

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Section: Binary Filler-based Nanocompositesmentioning

confidence: 99%

Section: Binary Filler-based Nanocompositesmentioning

confidence: 99%

Ultrasonically Induced Polymerization and Polymer Grafting in the Presence of Carbonaceous Nanoparticles

Cohen¹,

Zelikman

Suckeveriene³

2020

Processes

View full text Add to dashboard Cite

show abstract

“…Although the cost of neat graphene makes it less affordable for designing sensors, other variants have been used, such as reduced graphene oxide (rGO). Graphene oxide prepared from graphite is then chemically [ 45 ], thermally [ 46 ], or electrochemically reduced [ 47 ], leading to a lower oxygen content. One study reported that a calixarene-modified rGO-based electrochemical sensor detected different metal ions concurrently and demonstrated high sensitivity, selectivity, and reproducibility [ 48 ].…”

Section: Introductionmentioning

confidence: 99%

Development and Characterization of Integrated Nano-Sensors for Organic Residues and pH Field Detection

Chajanovsky¹,

Cohen²,

Shtenberg

et al. 2021

Sensors

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Meeting global water quality standards is a real challenge to ensure that food crops and livestock are fit for consumption, as well as for human health in general. A major hurdle affecting the detection of pollutants in water reservoirs is the lapse of time between the sampling moment and the availability of the laboratory-based results. Here, we report the preparation, characterization, and performance assessment of an innovative sensor for the rapid detection of organic residue levels and pH in water samples. The sensor is based on carbonaceous nanomaterials (CNMs) coated with an intrinsically conductive polymer, polyaniline (PANI). Inverse emulsion polymerizations of aniline in the presence of carbon nanotubes (CNTs) or graphene were prepared and confirmed by thermogravimetric analysis and high-resolution scanning electron microscopy. Aminophenol and phenol were used as proxies for organic residue detection. The PANI/CNM nanocomposites were used to fabricate thin-film sensors. Of all the CNMs, the smallest limit of detection (LOD) was achieved for multi-walled CNT (MWCNT) with a LOD of 9.6 ppb for aminophenol and a very high linearity of 0.997, with an average sensitivity of 2.3 kΩ/pH at an acid pH. This high sensor performance can be attributed to the high homogeneity of the PANI coating on the MWCNT surface.

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Spatial structure and aggregation of carbon allotrope nanofillers in isotactic polypropylene composites studied by small-angle neutron scattering

Elnikova

Ozerin

Шевченко

et al. 2021

Fullerenes, Nanotubes and Carbon Nanostructures

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We study the aggregation of carbon allotrope nanofillers in the matrix of isotactic polypropylene with direct small-angle neutron scattering measurements. With the ATSAS software, we analyzed the data and determined the fractal shape, dimension, and sizes of nanofiller aggregation in the bulk of isotactic polypropylene over the range of the scattering angles. We estimated the volume distributions and aggregation of different types of carbon nanofillers at different concentrations: nanographite, graphene nanoplatelets (GNP), single-walled carbon nanotubes (SWCNT), multiwall carbon nanotubes (MWCNT), binary fillers MWCNT/GNP and fullerenes. We reconstructed the shape of nanoscale aggregates of all nanofillers and found that the systems are polydisperse; nanofillers associate in the volume of iPP as fractal dense aggregates with rugged surface, their sizes exceeding original dimensions of nanofillers several times.

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Production by In Situ Polymerization and Properties of Composite Materials Based on Polypropylene and Hybrid Carbon Nanofillers

Cited by 7 publications

References 33 publications

Ultrasonically Induced Polymerization and Polymer Grafting in the Presence of Carbonaceous Nanoparticles

Ultrasonically Induced Polymerization and Polymer Grafting in the Presence of Carbonaceous Nanoparticles

Development and Characterization of Integrated Nano-Sensors for Organic Residues and pH Field Detection

Spatial structure and aggregation of carbon allotrope nanofillers in isotactic polypropylene composites studied by small-angle neutron scattering

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