ABSTRACT Thermoplastic vulcanizates (TPVs) based on ethylene-acrylic acid copolymer (EAA)/nitrile-butadiene rubber (NBR) and zinc dimethacrylate (ZDMA) reinforced EAA/NBR blends were prepared by dynamical vulcanization, the mechanical properties and Mullins effect of the TPVs under tearing mode were investigated systematically. Experimental results indicated that the increasing EAA dosage in the EAA/NBR

ABSTRACT Through ring-opening polymerization of L-lactide, aloin, a natural compound, was bonded to the polymeric chains and the molecular structures of obtained PLA-An were characterized by FT-IR and NMR. Measurements on the UV-Vis absorption and fluorescence emission spectroscopy show that PLA-An has a characteristic absorption of aloin and a large Stokes shift at the state of solution in the PL

ABSTRACT For shock-absorbing and wear-resistant devices, there is an urgent need for monomer casting nylon (MC nylon) with excellent friction properties and mechanical properties simultaneously. Liquid lubricating oil is known to reduce friction effectively, but it will cause a dramatical decline in the mechanical properties of oil-impregnated monomer casting nylon (OMC nylon). Herein, α-Al2O3 nanoparticles

ABSTRACT In this work, polyethersulfone (PES) adsorbent comprising carboxyl- and amino-functionalized multi-walled carbon nanotubes (MWCNTs) was fabricated through phase inversion method. The obtained nanocomposite was characterized via Fourier transform infrared, thermogravimetric analysis and scanning electron microscopy to reveal the effect of the presence of the functionalized carbon nanotubes

ABSTRACT The relationship between the structure of polyimide (PI) and the reinforcement effect of added graphene oxide (GO) remains relatively unexplored, despite extensive studies on composite materials prepared from PI and GO. This study demonstrated that the addition of aliphatic groups increased the reinforcement effect of GO on PI. The PI/GO composite films were prepared by blending and thermal

ABSTRACT In this work we have focussed to examine the effect of carbon black (CB) (3 wt%) and reactive organo-modified montmorillonite R-OMMT (1–3 wt%) on rheological, tensile, thermal, and fracture properties of thermoplastic polyurethane (TPU). XRD curves shows that completely exfoliated structures were obtained using 1 wt% and 2 wt% R-OMMT as a compatibilizer in CB reinforced TPU composites, whereas

ABSTRACT Advancements in nanotechnology have inspired the development of magnetic polymer composites (MPCs) exhibiting magneto-static, magnetic permeability, and electromagnetism (EM). These have influenced their usage in the suppression of EM interference, integrative sensoring, health mitigation, and so on, and further enlarged their scope of applications in electronics, aerospace, biomedicals, and

ABSTRACT The importance of alumina and titania is exceptionally high for modern life since they appear in all materials science fields and perform essential tasks without which modern life would not be possible. Every day, the window of application of these oxides expands, including polymer science and technology. Alumina and titania as nanofillers are explored in the present work, aiming to expand

ABSTRACT Visible light active metallo-organic systems have gained substantial attention in device applications due to the wide opportunities to tailor their electronic and optical properties. Herein we report the photovoltaic studies carried out on copper ion-containing coordination metallopolymer (copper (II) 1,3,5-triazine-2,4,6-trithiolate\CuTCA) and Titanium dioxide (TiO2) hybrid solar cells. The

ABSTRACT Carbon nanocoil is spiral/helix like nanostructure. It is a unique nanocarbon having high surface area, electrical conductivity, low resistivity, capacitance, stretchability, and mechanical characteristics. The nanocoil nanostructure is useful in capacitors, sensors, electronics, and energy devices. The review essentially focuses on progress to date in field of polymer/carbon nanocoil nanocomposites

ABSTRACT Pure, surface-roughened and coaxial hollow poly(methyl methacrylate) (PMMA) nanofibers are produced through electrospinning. These nanofibers are incorporated with synthesized neodymium β-diketonate complex. Structurally modified PMMA nanofibers show the best host matrix nature to neodymium complex. Neodymium complexes have significant contribution on the optical properties of these fibers

ABSTRACT Due to unique properties, ease of synthesis and functionalization, graphene-based nanocomposites show great potential in energy storage and conversion. These hybrid materials have excellent characteristics like high carrier mobility, faster recombination rate and long-time stability. In this review, the recent progresses in the synthesis and applications of graphene and its composites in the

ABSTRACT Thermoset molding compounds based on glass fiber-reinforced phenolic resins are an attractive material for thermo-mechanically demanding applications. Usually, the average fiber length in commercially available molding compounds is significantly shorter than the critical fiber length. In order to investigate the potential for increasing the fiber length in the molded part, molding trials using

ABSTRACT Chitosan (CS) is a biopolymer that presents remarkable biomedical applications. Here we report on the fluorescence study of water-soluble CS nanoparticles obtained by hydrothermal treatment at different temperatures and exposure times using hydrochloric acid as solvent. Average particle size varied from 1.69 μm to 112 nm for tested conditions. The fluorescence quantum yield of these CS NPs

ABSTRACT In this study, banded houndshark (triakis scyllium) skin was used for the preparation of a polyaniline (PANI)/shark skin composite. Infrared absorption (IR) and electron spin resonance (ESR) spectroscopy were performed to confirm the surface-layer PANI component. This method of polymerization could help develop the use of natural biological materials for the preparation of functional plastics

ABSTRACT This review aimed to provide a trend and evolution on the methods of conducting terpolymer synthesis and its applications for the first time in the open literature. Lots of attention was on homopolymer and copolymer in the onset of research on conducting polymers, but quest for improved optical, electrochemical, and conductive properties borne research in conducting terpolymerization. It comes

ABSTRACT Conductive polymers (CPs) have undergone in-depth investigations because of their numerous benefits in comparison with conventional materials. CPs nanocomposites have demonstrated incremental electrical conductivity, high surface area, and excellent electrochemical behavior thereby expanding their scope of applications. The hybridization of CPs with nanomaterials have resulted in fabrication

ABSTRACT Here, poly(lactic acid) (PLA)/poly(methyl methacrylate)-grafted natural rubber (NR-PMMA)/natural rubber (NR) ternary blends with co-continuous phase structure were prepared via peroxide-induced dynamic vulcanization. The good compatibility between NR-PMMA with PLA and NR and the interfacial grafting reaction during the preparation process ameliorated the interfacial compatibility between the

ABSTRACT Blending polypropylene (PP) into acrylonitrile-butadiene-styrene (ABS) resin to improve its solvent resistance and reduce the water absorption rate. Then, polypropylene-graft-polystyrene (PP-g-PS) was prepared by using pre-irradiation and suspension-grafting technique to improve the compatibility of ABS/PP blends. The FTIR result demonstrated that PS was grafted onto PP successfully, and SEM

ABSTRACT Flaky Cu (f-Cu) particles with surface modification by polystyrene (PS) coating layer were incorporated into poly(vinylidene fluoride) (PVDF), to obtain high dielectric constant (k) and thermal conductivity (TC) but low dielectric loss polymer composites. The results confirm the formation of a layer PS shell outside of the f-Cu, and indicate that the PVDF composites with f-Cu@PS particles

ABSTRACT Toxic liquid tris (1-chloro-2-propyl) phosphate) (TCPP) was microencapsulated with the melamine-formaldehyde resin in water and added as the fire-retardant into the polyurethane foam to slow down its diffusion out. The effect of sodium dodecyl benzenesulfonate and polyvinyl alcohol contents on the particle size was studied and the average size of about 50–250 μm was produced. Increasing the

ABSTRACT Polymer composite membranes composed of crosslinked sulfonated poly(vinyl alcohol) (SPVA) and fly ash (FA) were prepared via solution casting method. The physicochemical properties of these electrolyte membranes were studied in detail. SEM and XRD results provide evidence for the successful incorporation of fly ash into the SPVA matrix. As such SPVA polymer loaded with 20 wt.% of fly ash exhibited

ABSTRACT A series of redox-active, fluorescent neat polyimides and copolyimides bearing unsymmetrical and noncoplanar carbazole-TPA units have been synthesized via thermal imidization methods. The copolyimides were prepared by using methylene dianiline (MDA) and carbazole-TPA-based diamine in equimolar ratios and reacted with different dianhydrides. The structures of the prepared monomer and polyimides

ABSTRACT The present article highlights intensive research carried out on the study of potential applications of nanocomposites based on combination of nanomaterials with intrinsically conducting polymers, i.e., polyaniline, polypyrrole and poly(3,4-ethylenedioxythiophene) at electrochemical and biosensing platforms. Extensive literature information is summed up in this review article regarding synthesis

ABSTRACT This review is an attempt to describe distinctive ability of condensation polymer to form nanocomposites. Zero-dimensional nanocarbon nanomaterials including fullerene, carbon nano-onion, and nanodiamond are unique and promising nanofillers for polymers. Owing to nano-size, high aspect ratio, and intrinsic properties, zero-dimensional nanocarbon nanofillers have improved nanocomposite characteristics

ABSTRACT Nanodisk is a two-dimensional disk-like nanostructure. It has a size varying from a few nm to 500 nm. Nanodisk exists in both inorganic and organic forms as graphene nanodisk, carbon nanodisk, and inorganic nanodisk. These nanostructures gained significance as exceptional nanofillers for polymers. Nanodisk nanofillers have been filled in thermoplastic and conducting polymeric matrices such

ABSTRACT In this work, Ti-metal-organic framework nonofiber (MOFNF) was prepared using electrospinning method and its thermodynamic, morphological and mechanical properties was considered using related analyses, based on the ideal features of MOF and NFs using fractional factorial design. While preparing nano-coatings with some capabilities such as environmental friendly, transparent, desirable mechanical

ABSTRACT In this work, Graphene Oxide (GO) is embedded in both selective hydrophilic layer and porous hydrophobic substrate creating a mutual bridge between the two surfaces. Pristine 1–3 µm microporous PSF prepared via dry/wet phase inversion techniques with contact angle of 74.12° has been further study with GO embedded Pebax dense selective layer. This dual nature thin film nano composite TFNC membranes

ABSTRACT The purpose of this study is to improve the low absorbency under load and the permeability of a superabsorbent polymer (SAP)-based on itaconic acid by introducing a polycationic salt into the core-SAP to form ionic bonds as well as by adding modified silica to the surface-crosslinked SAP. The core-SAP was synthesized by aqueous polymerization using itaconic acid, vinyl sulfonic acid, and tetra

ABSTRACT Damping composites with sandwich layer are widely used in the fields of aerospace and high-speed trains. The most fatal defect of traditional damping composites is the poor interfacial adhesion between resin matrix and damping materials. To enhance interfacial bonding performance of traditional damping sandwich composites, the novel glass fiber reinforced damping composites were prepared by

ABSTRACT A grafted polymer/inorganic hybrid combining the properties of silica nanoparticles (Rav = 7.7 nm) and polyacrylamide (SiO2-g-PAAm) was synthesized, characterized and used as a matrix for in situ synthesis of silver nanoparticles (AgNPs). In the “core”-“corona” hybrid nanostructures, PAAm grafts were additionally bonded to the silica surface by H-bonds. The reduction of Ag+-ions in SiO2-g-PAAm

ABSTRACT Herein, a simple strategy was proposed for multi-scale construction of low-κ epoxy composites by adding a kind of polyhedral oligomeric silsesquioxane@graphene oxide hybrids. Results revealed that the dielectric constant of the composites was decreased with increasing the frequency, and it was decreased first and then increased with increasing the fillers loading. The AC resistivity values

ABSTRACT A SPPO/IL composite membrane was obtained by self-assembly using the SPPO with the highest degree of sulfonation and the prepared ionic liquid (1-methyl-3-methylimidazolium). SPPO/IL composite membrane is doped with phosphoric acid to form SPPO/IL/PA composite membrane. The SPPO/IL composite membrane is immersed in PA for 24 h, the ion conductivity reaches 36.1 mS/cm. The mechanical stability

ABSTRACT The synthesis of polyetherols based on (hydroxypropyl)cellulose, functionalized with glycidol, and ethylene carbonate was elaborated. All conversions were performed in glycols. The products were characterized by IR, 1H NMR, and MALDI ToF spectroscopy. The polyetherols were then used to obtain rigid polyurethane foams. These foams have apparent density, water uptake, and polymerization shrinkage

ABSTRACT This study investigated different factors to improve the separation performance of membranes composed of polyvinyl alcohol (PVA) and a water absorbing agent. The effects of the compositional differences and additive addition to the prepared membranes on the separation performance were evaluated for the separation of CO2 and He at Ptotal values of 0.1 and 0.7 MPa at 60°C and 85°C, respectively

ABSTRACT Advanced polymeric materials have attracted tremendous attention in recent years as the promising materials for the development of next generation energy technology. These polymeric materials have witnessed impressive electrochemical performance improvement in energy conversion and storage devices with the advances in understanding and design of advanced-nanostructured materials such as carbon-based

ABSTRACT Polyetherimide (PEI) nanoparticles with the size range from about 200 nm to 1 μm were successfully prepared from a PEI/DMSO solution by a simplified cooling-down method. The formation of PEI nanoparticles is caused by the temperature drop. The particle size is related to the temperature, cooling time, and PEI concentration. At low concentrations, well-separated PEI nanoparticles appear, and

This review encompasses detailed knowledge about recent advancement in the synthesis of novel Nanohybrids. The materials based on matrix component as epoxy and Polyamide with the specified carbon nano-bifiller carbon nanotubes and nano-diamond have been discussed in detail due to their novelty and endless applications in various industries. Limited research have been carried out regarding synthesis

In the field of anticorrosion, epoxy resin plays an important role. Therefore, many researchers have reported the strategy, manufacturing technology, and application of epoxy anticorrosive coatings all over the world. In this paper, three basic ideas for improving the anticorrosion performance of epoxy resin anticorrosive materials are summarized, and the current strategies for developing new epoxy

In recent years, experimentation on organic conducting polymers has been escalated and many interested researchers are looking forward to exploring more in the area of optoelectronics. Due to advantageous properties including easy tunability, flexibility, processability, thermal stability, and electroluminescence, conducting property seen to have diverse applications, but in here focus is specifically

The present study focuses on fabrication and characterization of halloysite nanotube (HNT) filled polyamide 6,6 nanocomposite fibers. HNTs were incorporated into the spinning solution at various concentration levels changing from 5 to 30 wt%. To understand the changes in the fiber morphology, viscosity, and conductivity of the electrospining solutions were also investigated. Depending on the filler

The polypeptide, poly(AVGVP), a prominent member of the synthetic polypeptides (PLP), exhibiting plastic properties for biomedical applications. Their miscibility characteristics with polyacrylamide (PAM) were scrutinized in different weight proportions manipulating viscometry in the aqueous phase. The interaction parameters confirmed that the two polymers are miscible up to 20/80 weight portion of

ABSTRACT Polypropylene random copolymer (PPR) and polybutene-1(PB-1) are blended and long-chain branched (LCB) in the reactive extruder. The optimum amount of PB-1 resin, peroxide (DCP) and trimethylolpropane triacrylate (TMPTMA) for long-chain branching of PPR and probe topology formed by the branches were investigated. Fourier transformed infrared spectroscopy (FTIR) used to measure the branching

ABSTRACT This paper describes the synthesis of polyindole by chemical oxidative polymerization using copper chloride as oxidant. Polyindole was characterized by various spectroscopic techniques like FT-IR, XRD, FESEM, and TGA. The XRD pattern confirms the semi-crystalline nature of polyindole. An efficient, solvent-free, ultrasound-assisted synthesis of biologically active 3,4-dihydropyrimidin-2(1 H)-one/thiones

ABSTRACT In this study, a simple and efficient hydrothermal carbonization method was proposed to synthesize anhydrous magnesium carbonate (MgCO3) particles with block-, cube-, corncob-, and sphere-like morphologies, and their crystal phase, chemical structure, and thermal stability were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy and thermogravimetric analysis

A medical microneedle candidate material is prepared bases on polylactic acid (PLA), poly(ethylene glycol) (PEG), and low content of multi-walled carbon nanotubes (MWCNT) composites. A successive self-nucleation and annealing analysis was applied and the presence of PEG and the MWCNT ratio had a significant influence on the processability of PLA. The composites show much better tensile strength and

A novel photodegradable Methylene Blue (MB)/TiO2/PVC film was prepared. The physical and mechanical properties, hydrophilicity, and the thermal stability of the film before irradiation were characterized. The photodegradability test was performed by using gel permeation chromatography (GPC), infrared spectroscopy (FT-IR), ultraviolet-visible spectroscopy (UV-vis), and scanning electron microscopy (SEM)

ABSTRACT The advent of nanotechnology, and hybridization of nanomaterials such as graphene, carbon nanotubes, nanoclay and so on, with natural fibers in polymeric materials have resulted in formation of polymer fiber nano-biocomposites. Accruable properties garnered from these materials amongst many include thermal stability, enhanced electrical and thermal conductivity, reduced thermal expansion,

ABSTRACT Maleimides, due to their unsaturated cycle, represent a starting point in obtaining the synthetic compounds in the organic and macromolecular chemistry. The applications of the compounds based on mono- and bismaleimides are varied in different fields. This study aims to show and discuss the applications of these compounds in the last decades and is structured in chronological order, depending

Dopamine (DA) is biologically important molecule, which plays a vital role in hormonal, renal, cardiovascular, and central nervous systems. Since abnormal level of this biological molecule leads to several diseases, its accurate and fast monitoring is of great importance for clinical diagnosis and treatment. The electrochemical approaches have become of significant interest to fulfill the requirements

Firstly, the polyvinyl alcohol/polyacrylic acid double network hydrogels were prepared by physical and chemical double cross-linking, then polyethylene glycol, chitosan, and hydroxypropyl methyl cellulose were added to construct the multiple network hydrogels. The intermolecular chains were entangled with each other and the intermolecular force was gathered at the cross-linking point, which greatly

Herein, a kind of low-κ epoxy composites with excellent comprehensive properties were prepared by introducing chloride salt of octa (aminopropylsilsesquioxane). The dielectric constant (106 Hz) of the composite was decreased by 0.94 when the fillers loading was only 3 wt%. The thermal stability and shore hardness were both improved, and the water adsorption was reduced. The improved properties of the

With the slackening of fossil fuels and anxious about greenhouse gas emission culminate, the ever-expanding requirement for green renewable energy, and also to set up the energy with more efficiency. In this context, thermoelectric technology has been of great significance considering the potential growth of electrical energy to heat energy and vice versa through a thermocouple and uses the waste heat

The molecular surface imprinted graft copolymer of metal-organic framework MOF-5 with methacrylic acid were prepared by free radical polymerization with dibutyl phthalate as the template molecule using initiator of azobisisobutyronitrile as adsorption system. The prepared MIPs@MOF-5 were characterized by fourier transform infrared spectroscopy, scanning electron microscopy, Brunner−Emmet−Teller measurements

Nanomaterials have become an established area of academic research and have gained commercial importance due to their valuable physicochemical properties, such as large surface area, high mechanical strength as well as unique optical and electrical features. Numerous nanosize architectures have been researched and reported to date including quantum dots, fullerenes, nanorods, nanowires, nanofibers

In this work, boron nitride (BN) and exfoliated boron nitride nanosheets (BNNs) were employed as thermal conductive fillers to improve the thermal conductivity of poly(vinylidene fluoride) (PVDF) composites. Results suggested that the thermal conductivity of PVDF increases significantly with an increase in loading content of functional fillers. When the mass ratio of fillers was more than 30 wt%, the

Cast films, based on β-iPP, were prepared via melt extrusion, and, then annealed at different temperature. The effect of annealing on the properties of the cast films, as well as on microvoid formation and evolution was investigated. After annealing, the initial lamellar structure was improved, and more secondary crystals were formed which decreased the numbers of tie chains, which was beneficial to

Functionalization of multiwalled carbon nanotubes (MWCNTs) with amine group using 4,4′-diaminodiphenyl sulfone (DDS) is achieved after carboxylation of pure MWCNTs (p-MWCNTs). p-MWCNTs, a-MWCNTs (acid functional MWCNTs) and f-MWCNTs (amine functional MWCNTs) were used to fabricate their nanocomposite with PMMA. A comparative study of the humidity characteristics of p-MWCNTs/PMMA, a-MWCNTs/PMMA and

Herein, gold nanoparticles (Au Nps) imprinted polyacrylic acid/chitosan (PAA/CS) nanocomposite hydrogels are designed by in situ polymerization technique. The change in crystallite size and d-spacing is established from X-ray diffraction study. It is interesting to notice that the layered morphology of PAA/CS/Au nanocomposite hydrogel is achieved from field emission scanning electron microscopy due

ABSTRACT Herein, gold nanoparticles (Au Nps) imprinted polyacrylic acid/chitosan (PAA/CS) nanocomposite hydrogels are designed by in situ polymerization technique. The change in crystallite size and d-spacing is established from X-ray diffraction study. It is interesting to notice that the layered morphology of PAA/CS/Au nanocomposite hydrogel is achieved from field emission scanning electron microscopy