Modeling of interfacial bonding between two nanofillers (montmorillonite and CaCO3) and a polymer matrix (PP) in a ternary polymer nanocomposite

2014 ◽  
Vol 321 ◽  
pp. 219-225 ◽  
Author(s):  
Yasser Zare ◽  
Hamid Garmabi
Keyword(s):  
Polymer Matrix ◽  
Polymer Nanocomposite ◽  
Interfacial Bonding ◽  
Ternary Polymer

scholarly journals Polymer Nanocomposite Membranes

2018 ◽  
Vol 8 (7) ◽  
pp. 1181 ◽  
Author(s):  
Svetlana Kononova ◽  
Galina Gubanova ◽  
Eleonora Korytkova ◽  
Denis Sapegin ◽  
Katerina Setnickova ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Polymer Matrix ◽  
Scientific Literature ◽  
Morphological Characteristics ◽  
Polymer Nanocomposite ◽  
Nanocomposite Materials ◽  
Sorption Mechanism ◽  
Nanocomposite Membranes ◽  
Nanocomposite Structure ◽  
Transport Channels

Based on the results of research works reflected in the scientific literature, the main examples, methods and approaches to the development of polymer inorganic nanocomposite materials for target membranes are considered. The focus is on membranes for critical technologies with improved mechanical, thermal properties that have the necessary capabilities to solve the problems of a selective pervaporation. For the purpose of directional changes in the parameters of membranes, effects on their properties of the type, amount and conditions of nanoparticle incorporation into the polymer matrix were analyzed. An influence of nanoparticles on the structural and morphological characteristics of the nanocomposite film is considered, as well as possibilities of forming transport channels for separated liquids are analyzed. Particular attention is paid to a correlation of nanocomposite structure-transport properties of membranes, whose separation characteristics are usually considered within the framework of the diffusion-sorption mechanism.

Recent Advances in Polymer-Based Nanocomposites: A Brief Review

2021 ◽  
Vol 13 ◽  
Author(s):  
S. K. Parida
Keyword(s):  
Electrical Properties ◽  
Polymer Nanocomposites ◽  
Polymer Matrix ◽  
Polymer Nanocomposite ◽  
Review Article ◽  
Nanosized Particles ◽  
Mechanical And Electrical Properties ◽  
Potential Applications ◽  
Manufacturing Techniques ◽  
Host Polymer

: This presented review article is constructed to be an extensive source for polymer nanocomposite researchers covering the relation of structure with property, manufacturing techniques, and potential applications when a small number of nanosized particles are added to a host polymer matrix. The exceptional structural, mechanical, and electrical properties of polymer nanocomposites after the addition of inorganic solid nanoparticles are elucidated by the large surface area of doped nanoparticles that interact with host polymer matrices. Due to the generation of ideas, the conventional methods of preparation of polymer nanocomposites are made more interesting. Hence, this brief review presents a sketch of different synthesis techniques, characterization, applications, and safety concerns for polymer nanocomposites.

Preparation and characterization of poly (amide-ester-imide)/Na+-MMT nanocomposite via ultrasonic method

2017 ◽  
Vol 37 (5) ◽  
pp. 443-448 ◽  
Author(s):  
Razieh Mirsafaei ◽  
Majid Kolahdoozan
Keyword(s):  
Electron Microscopy ◽  
Polymer Matrix ◽  
Ultrasonic Method ◽  
Polymer Nanocomposite ◽  
Interlayer Spacing ◽  
Water Soluble ◽  
Sem Images ◽  
Structure Information ◽  
Poly Ethylene ◽  
Clay Layers

Abstract The novel poly (amide-ester-imide) (PAEI)/Na+-MMT (montmorillonite) nanocomposites were synthesized by ultrasound-assisted technique successfully. PAEI/Na+-MMT nanocomposites with various content of Na+-MMT were applied to enhance the dispersion of the clay layers with polymer matrix. Water-soluble PAEI containing poly (ethylene glycol) (PEG-6000) was prepared, and nanocomposites with various content of Na+-MMT (5, 10, 15, and 20 mass %) were fabricated by ultrasonic method to produce nano-scale composites. The effects of Na+-MMT on the nanocomposites were investigated by Fourier transform infrared, X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM) and for thermal properties. XRD approved the structure information of the synthesized nanomaterials, and it was shown that the interlayer spacing increased with clay loading. The magnitude of dispersion of the clay in the nanocomposite matrix was investigated by TEM and SEM images. The results indicated that the lateral dimension of Na+-MMT particles in composites was approximately 100 nm, and the nanomaterials are well dispersed in the polymer matrix to produce exfoliated structure in polymer/nanocomposite. Thermogravimetric analysis confirms that PAEI/Na+-MMT nanocomposites show superior thermal stability with respect to the pure PAEIs.

scholarly journals Molecular Junctions Enhancing Thermal Transport within Graphene Polymer Nanocomposite: A Molecular Dynamics Study

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2480
Author(s):  
Alessandro Di Pierro ◽  
Bohayra Mortazavi ◽  
Alberto Fina
Keyword(s):  
Molecular Dynamics ◽  
Polymer Matrix ◽  
Thermal Transport ◽  
Strong Dependence ◽  
Thermal Conductance ◽  
Polymer Nanocomposite ◽  
Molecular Junctions ◽  
Tight Contact ◽  
Thermally Conductive ◽  
Dynamics Simulations

Thermal conductivity of polymer-based (nano)composites is typically limited by thermal resistances occurring at the interfaces between the polymer matrix and the conductive particles as well as between particles themselves. In this work, the adoption of molecular junctions between thermally conductive graphene foils is addressed, aiming at the reduction of the thermal boundary resistance and eventually lead to an efficient percolation network within the polymer nanocomposite. This system was computationally investigated at the atomistic scale, using classical Molecular Dynamics, applied the first time to the investigation of heat transfer trough molecular junctions within a realistic environment for a polymer nanocomposite. A series of Molecular Dynamics simulations were conducted to investigate the thermal transport efficiency of molecular junctions in polymer tight contact, to quantify the contribution of molecular junctions when graphene and the molecular junctions are surrounded by polydimethylsiloxane (PDMS) molecules. A strong dependence of the thermal conductance was found in PDMS/graphene model, with best performances obtained with short and conformationally rigid molecular junctions. Furthermore, the adoption of the molecular linkers was found to contribute additionally to the thermal transport provided by the surrounding polymer matrix, demonstrating the possibility of exploiting molecular junctions in composite materials.

scholarly journals Modeling Annular Structures of Carbon Nanotubes as Macromolecular Coils – a Possibility of Gel Formation

2020 ◽  
pp. 37-43
Author(s):  
Luiza Atlukhanova ◽  
Georgiy Kozlov
Keyword(s):  
Carbon Nanotubes ◽  
Polymer Matrix ◽  
Percolation Theory ◽  
Solid Phase ◽  
Polymer Nanocomposite ◽  
Effective Elastic Modulus ◽  
Liquid System ◽  
Gel Formation ◽  
Gelation Process ◽  
High Degree

Carbon nanotubes (nanofibers) form folded ring-like structures in the polymer nanocomposite that look like macromolecular tangles. This behavior of these nanofillers is due to their high degree of anisotropy and low transverse stiffness. In this case, the ring-like structures of the nanotubes are considered as a macromolecular tangle, and the polymer matrix is considered as a solvent. This interpretation of nanocomposites polymer/carbon nanotubes makes it necessary to study the possibility of implementing the gelation process in them, which is understood as the transition of liquid (easily mobile and viscous) microheterogenic or homogeneous systems to the solid-phase state of gel or jelly. Gel formation is caused by the appearance of a spatial phase or molecular grid (frame) in the volume of the liquid system, which deprives the system of fluidity and gives it some properties of a solid body (elasticity, plasticity, brittleness, strength), which is of particular interest in studying the properties of polymer nanocomposites. The purpose of this work is to study the properties of polymer/carbon nanotubes (nanofibers) nanocomposites in the framework of the percolation theory and the possibility of implementing the gelation process in them. The possibility of gel formation by carbon nanotubes (nanofilaments), which are simulated as macromolecular coils, in nanocomposites based on polypropylene, is studied within the framework of the fractal analysis and the percolation theory. The paper shows that for achieving the point of gel formation the specific (straight-line) configuration of the indicated nanofillers is necessary and realization of this effect can lead to a sharp discrete change of nanocomposites in consideration. The authors find out that the effective elastic modulus of nanofillers in the polymer matrix is defined not by their stiffness, but by the efficiency of transfer of the applied mechanical stress from the polymer matrix to the nanofiller.

Study Of Thermal And Mechanical Properties Of Clay/Polymer Nanocomposite Synthesized Via Modified Solution Blending

MRS Advances ◽  
2017 ◽  
Vol 2 (49) ◽  
pp. 2757-2762 ◽  
Author(s):  
Oscar Hernandez-Guerrero ◽  
Rubén Castillo-Pérez ◽  
Mireya Lizbeth Hernández-Vargas ◽  
Bernardo Fabián Campillo-Illanes
Keyword(s):  
Polymer Matrix ◽  
Polymer Nanocomposite ◽  
Hydrophobic Property ◽  
Scanning Calorimetry ◽  
Solution Blending ◽  
Nano Clay ◽  
Order Of Magnitude ◽  
Mixing Matrix ◽  
Mmt Clay ◽  
Matrix Concentration

ABSTRACTThe incorporation of layered nano-silicates in polymer matrix greatly enhances the properties of the polymer. At present, there are many applications of polymer nanocomposites including coatings and architectural, they are also parts of automotive and construction industry among others. The acrylics employed at the present study were based on butyl acrylate (BA), styrene (STY), and methacrylic acid (MAA), and the nano-clay was Na-montomorillonite (MMT). The MMT clay was added to the polymer, which is the mixing matrix in a physical state solution called blend. Furthermore, their mechanical, thermal and wettability of especially prepared acrylic montmorillonite (MMT) nanocomposites were performed. By increasing the MMT in the polymer matrix concentration the Young’s modulus tends to increase it by an order of magnitude. However, by Differential Scanning Calorimetry (DSC), the thermograms show an increase in the glass transition temperature of nanocomposites for all weight percentages of MMT. Also, the wetting angle was determined, in order to know how much water is retained on the surface of the nanocomposite; the results showed that by increasing the particle of nano clay in the polymer matrix will induce a hydrophobic property to the nanocomposite.

Preparation and Characterization of Polymer Nanocomposite Containing PMMA, Styrene and Nanoalumina

2008 ◽  
Vol 8 (8) ◽  
pp. 4056-4067
Author(s):  
Dhananjay Singh ◽  
T. Jayasimha ◽  
K. N. Rai ◽  
Anil Kumar
Keyword(s):  
Polymer Matrix ◽  
Testing Machine ◽  
Impact Resistance ◽  
Polymer Nanocomposite ◽  
Impact Testing ◽  
Hydroxyl Groups ◽  
Alumina Surface ◽  
Weight Impact ◽  
The Impact

Polymer syrup of polymethyl methacrylate and polystyrene reinforced with 2% non settling nanoalumina particles was prepared by dual initiating system containing benzoylperoxide (BPO), azobisisobutyro nitrile (AIBN) and dimethylaniline (DMA). Nanoalumina particles were prepared using autoignition of aluminum nitrate and urea. Nanoalumina particles show the tendency of agglomeration in the polymer matrix because of the presence of hydroxyl groups on its surface. To get better dispersion in polymer matrix, the alumina surface was treated with methacrylol isocyanate, synthesized by the reaction of methacrylol chloride and sodium azide in the presence of dry benzene at 0 °C. The polymer syrup prepared this way was applied between two PMMA sheets of 10 cms × 10 cms × 2 mm dimensions each and the composite thus prepared was tested with Bullet Firing Machine as well as Vertical Drop Weight Impact Testing Machine. The impact strength measurements of two plates composite using both these procedures showed that the impact resistance was found to double in case of nanoalumina. The composite of ten layers and of eleven layers was further tested by 0.32 IOF revolver and Sub Machine Gun Carbine 9 mm 1A1 respectively from 10 m distance which produced an ordinary indent with no penetration.

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