Polymer Nanocomposites and Multilayer Nanocomposite Films by Coextrusion

Enthalpic interactions at the interface between nanoparticles and matrix polymers are known to influence various properties of the resultant polymer nanocomposites (PNC).

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Hierarchical interfaces induce high dielectric permittivity in nanocomposites containing TiO2@BaTiO3 nanofibers

Nanoscale ◽

10.1039/c4nr00703d ◽

2014 ◽

Vol 6 (12) ◽

pp. 6701-6709 ◽

Cited By ~ 86

Author(s):

Xin Zhang ◽

Weiwei Chen ◽

Jianjun Wang ◽

Yang Shen ◽

Lin Gu ◽

...

Keyword(s):

Dielectric Permittivity ◽

Polymer Nanocomposites ◽

Polyvinylidene Fluoride ◽

Nanocomposite Films ◽

High Dielectric Permittivity ◽

High Dielectric

TiO2 nanofibers embedded with BaTiO3 nanoparticles are fused with polyvinylidene fluoride into nanocomposite films. The hierarchical interfaces in the nanofibers induce a three-fold enhancement in dielectric permittivity of the polymer nanocomposites.

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Preparation of Polypropylene/Silver Nanoparticles Nanocomposite Film and Evaluation of its Mechanical and Antimicrobial Properties w.r.t it’s Use in Packaging Applications

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2021.37207 ◽

2021 ◽

Vol 9 (VII) ◽

pp. 3830-3838

Author(s):

Rajesh Kumar Sahoo

Keyword(s):

Escherichia Coli ◽

Silver Nanoparticles ◽

Polymer Nanocomposites ◽

Nanocomposite Film ◽

Antimicrobial Properties ◽

Nanocomposite Films ◽

Polypropylene Film ◽

Gram Positive ◽

Gram Positive Bacteria ◽

Melt Compounding

Polypropylene/silver nanoparticles nanocomposite films were prepared by melt compounding method by using polypropylene pallets and silver nanoparticles powder. The physical properties of the virgin polypropylene film and nanocomposite films were evaluated by mechanical testing. The effect of various silver nanoparticles content in the polymer nanocomposites with respect to its antimicrobial efficacy against the Gram positive bacteria Escherichia coli and Gram positive bacteria Staphylococcus aureus were studied. Nanocomposite film containing higher percentage of silver nanoparticles loading showed 99.9 % efficacy against the bacteria as compared to virgin polypropylene film.

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Microwave absorption of polymer nanocomposites on the base high-density polyethylene and magnetite nanoparticles

Journal of Elastomers & Plastics ◽

10.1177/0095244318768652 ◽

2018 ◽

Vol 51 (2) ◽

pp. 130-142 ◽

Cited By ~ 3

Author(s):

MA Ramazanov ◽

FV Hajiyeva ◽

AM Maharramov ◽

HM Mamedov

Keyword(s):

Polymer Nanocomposites ◽

High Frequency ◽

High Density Polyethylene ◽

Electromagnetic Waves ◽

Nanocomposite Materials ◽

Nanocomposite Films ◽

Frequency Range ◽

Force Microscopy ◽

Atomic Force ◽

Agglomeration Of Nanoparticles

In this article, we report about the synthesis of magnetic polymer nanocomposites comprising magnetite (Fe3O4) nanoparticles in a polyethylene (PE) matrix. The structure and composition of nanocomposite materials using scanning electron microscopy and atomic force microscopy have been studied. It has been defined that the agglomeration of nanoparticles does not occur, by increasing the volume content of nanoparticles up to 60%, and Fe3O4 nanoparticles act out like single-domain particles. It has also been revealed that nanocomposites based on PE + Fe3O4 with nanoparticle content in a polymer matrix up to 60% behave like superparamagnetic particles. It has also been revealed that the PE + Fe3O4-based nanocomposites effectively absorb the electromagnetic waves in the high frequency range of 0.1–30 GHz. It is shown that the properties of ultrahigh electromagnetic waves can be varied by varying the thickness of the nanocomposite films and the concentration of Fe3O4 nanoparticles.

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Densely Packed Linear Assembles of Carbon Nanotube Bundles in Polysiloxane-Based Nanocomposite Films

Journal of Nanomaterials ◽

10.1155/2013/564307 ◽

2013 ◽

Vol 2013 ◽

pp. 1-10 ◽

Cited By ~ 9

Author(s):

Hong-Baek Cho ◽

Minh Triet Tan Huynh ◽

Tadachika Nakayama ◽

Son Thanh Nguyen ◽

Hisayuki Suematsu ◽

...

Keyword(s):

Carbon Nanotubes ◽

Polymer Nanocomposites ◽

Electric Fields ◽

Nanocomposite Films ◽

Mechanical Stirring ◽

Nanotube Bundles ◽

Aerospace Applications ◽

Linear Assembly ◽

Electrical Conductivities ◽

Thermal And Electrical Properties

Linear assemblies of carbon nanotubes (LACNTs) were fabricated and controlled in polysiloxane-based nanocomposite films and the effects of the LACNTs on the thermal and electrical properties of the films were investigated. CNTs were dispersed by mechanical stirring and sonication in a prepolymer of polysiloxane. Homogeneous suspensions were cast on polyamide spacers and oriented by linear-assembly by applying DC and switching DC electric fields before the mixture became cross-linked. Densely packed LACNTs that fixed the composite film surfaces were fabricated with various structures and thicknesses that depended on the DC and switching DC conditions. Polymer nanocomposites with different LACNT densities exhibited enhanced thermal and electrical conductivities and high optical transmittances. They are considered promising structural materials for electronic sectors in automotive and aerospace applications.

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Polymer Nanocomposite Films with Functionalized MWCNTs

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.328.778 ◽

2013 ◽

Vol 328 ◽

pp. 778-783 ◽

Cited By ~ 1

Author(s):

Anita Grozdanov ◽

Ana Tomova ◽

Perica Paunović ◽

T. Aleksandar Dimitrov

Keyword(s):

Carbon Nanotubes ◽

Polymer Nanocomposites ◽

Polymer Nanocomposite ◽

Nanocomposite Films ◽

Specific Interactions ◽

Dichloromethane Solution ◽

Biocompatible Polymer ◽

Mechanical And Structural Properties ◽

Functionalized Mwcnts

Polymer nanocomposites with carbon nanotubes (CNTs) have become very attractive class of materials for numerous engineering applications since carbon nanotubes exhibit a high aspect ration, unique electrical, mechanical and structural properties. Functionalization of CNTs offer new potentials for other technical challenges of the polymer based nanocomposites associated with their specific interactions. A biocompatible polymer matrices PMMA and PCL were used to provide good interfacial bonding between carbon nanotubes. MWCNT (d=30-50 nm, purity>95%) were used for preparation of polymer based nanocomposites with 0.2, 0.5 and 1.0 % w/w MWCNTs content. PMMA-based nanocomposites were prepared via the mixing of the MWCNT and polymer in a dichloromethane solution for 24 h, while for the PCL-based nanocomposites as a solvent tetrahyrofurane was used. Functionalization of the CNTs was performed in acid (HNO3) and alkali (NH4OH+H2O2) medium as well as by additional thermal oxidation at 490°C. Characterization of the nanocomposite films was performed by DSC, TGA, WAX, FTIR and SEM. The obtained results have shown that introducing MWCNT into polymer matrix significantly changes have been found in the properties of the obtained nanocomposites.

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Multilayer hierarchical interfaces with high energy density in polymer nanocomposites composed of BaTiO3@TiO2@Al2O3 nanofibers

Journal of Materials Chemistry A ◽

10.1039/c7ta03846a ◽

2017 ◽

Vol 5 (29) ◽

pp. 15217-15226 ◽

Cited By ~ 113

Author(s):

Zhongbin Pan ◽

Jiwei Zhai ◽

Bo Shen

Keyword(s):

Energy Density ◽

Polymer Nanocomposites ◽

High Energy ◽

High Energy Density ◽

Nanocomposite Films ◽

Fast Discharge

Nanocomposite films with small loading of BaTiO3@TiO2@Al2O3 nanofibers show a high energy density of 14.84 J cm−3 at 450 MV m−1 and an ultra-fast discharge speed of 0.37 μs.

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The Poly(Chloro-P-Xylylene)-Ag Metal-Polymer Nanocomposites Obtained by Controlled Vapor-Phase Synthesis for SERS Effect Realisation

Coatings ◽

10.3390/coatings11101171 ◽

2021 ◽

Vol 11 (10) ◽

pp. 1171

Author(s):

Irina Boginskaya ◽

Aliia Gainutdinova ◽

Alexey Gusev ◽

Karen Mailyan ◽

Anton Mikhailitsyn ◽

...

Keyword(s):

Molecular Weight ◽

Polymer Nanocomposites ◽

Vapor Phase ◽

Self Assembly ◽

Silver Content ◽

Nanocomposite Films ◽

Morphological Properties ◽

Surface Enhanced Raman ◽

Vapor Phase Polymerization ◽

Metal Polymer

Substrates based on the metal-polymer nanocomposites 2,3-dichloro-p-xylylene-silver (PCPX-Ag) that realize the effect of surface-enhanced Raman scattering (SERS) were developed. To obtain nanocomposites, the vapor-phase polymerization method was used (VDP), which makes it possible to control the nanocomposite microstructure. In the process of self-assembly during VDP, nanocomposite films with inclusions of silver particles were formed on the polycore substrates. Silver content varied from 2.5 to 16% vol. The possibility of using such substrates for the detection of low-molecular substances, for example 5,5′-dithiobis- (2-nitrobenzoic acid) (DTNB) analyte, by the SERS method with an enhancement factor of up to 104, was demonstrated. The dependence of the SERS spectra enhancement on the microstructure of the nanocomposite and the silver content was determined. The optical and morphological properties of nanocomposites were also investigated and their dependence on the silver content was shown. It has been demonstrated that the nanocomposite is SERS selective since when working with complex solutions in the presence of high molecular weight substances, signal enhancement was only observed for low molecular weight substances.

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Improvement Approach for Gas Barrier Behavior of Polymer/Clay Nanocomposite Films

MRS Advances ◽

10.1557/adv.2017.458 ◽

2017 ◽

Vol 2 (57) ◽

pp. 3547-3552 ◽

Cited By ~ 4

Author(s):

Maedeh Dabbaghianamiri ◽

Sayantan Das ◽

Gary W. Beall

Keyword(s):

Polymer Nanocomposites ◽

Food Packaging ◽

Barrier Properties ◽

Nanocomposite Films ◽

Layer By Layer ◽

Gas Barrier ◽

Barrier Films ◽

High Particle ◽

Polymer Clay Nanocomposite ◽

Self Assembled

ABSTRACTPolymer nanocomposites (PNC) include a copolymer or polymer which has nanoparticles dispersed in the polymer matrix at the nano-level. One of the most common types of polymer nanocomposites contain smectic clays as the nanoparticles. These clay minerals increase the mechanical properties of standard polymers and improve barrier properties. For optimum barrier properties, Layer-by-Layer assembly (LbL) is one of the most effective methods for depositing thin films. LbL methods however, are quite tedious and produce large quantities of waste. A newly discovered phenomenon of self-assembled polymer nanocomposites utilizes entropic forces to drive the assembly to spontaneously form a larger nanostructured film. This approach allows polymers and nanoparticles with high particle loadings to be mixed, and create the super gas barrier films. We have developed a coating technique which can be employed to make self-assembled gas barrier films via inkjet printing. This technique is industrially scalable and efficient. This is because it does not need any rinsing step and drying steps as required in LbL. The influence of different polymers Polyvinylpyrrolidone (PVP) and Poly (acrylic acid) PAA with Montmorillonite (MMT) nanoclay solutions on Polyethylene terephthalate (PET) substrate is examined to study their effectiveness as a gas barrier film. The results showing the excellent oxygen barrier behavior of a combination of PVP and MMT Nano clay nanocomposite with high transparency. These high barrier gas nanocomposite films are good candidates for a variety of food packaging applications.

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