The one-step generation of nano-silica (SiO2) on graphene oxide (GO) surface via using diethylenetriamine (DETA) and ammonium hydroxide (NH4OH) base catalysts was respectively designed to improve the dispersion and interfacial interaction between GO and epoxy resin. The structures and morphologies of GO, GO-SiO2(i) and GO-SiO2(ii) sheets were tested by FT-IR, XRD, XPS, TG, SEM and TEM. Epoxy composites

Thermoplastic fiber-reinforced polymer (FRP) composites play a significant role in industrial applications due to their high energy absorbing capability. Combining ultra-high-molecular-weight polyethylene (UHMWPE) fiber/fabric and infusible thermoplastic methyl methacrylate (MMA) based matrix forms a complete thermoplastic composite system, which can fulfil the demands of being lightweight and high

The poor hydrophobicity and toughness of polylactide (PLA) films make it difficult to meet the requirements of barrier, printing and moisture-proof material. How to improve the two drawbacks of PLA simultaneously is a daunting challenge at present. In this work, we introduce poly (butylene adipate-co-terephthalate) (PBAT) as a second flexible phase into PLA matrix and concomitantly impose intensive

In recent years, the design of alcohol testing devise has received major attention from researchers considering the large number of traffic accidents caused by drunk driving. In this context, a simple electrospinning route has been presented to fabricate hierarchical structured PLA/PVDF nanofibrous membrane for achieving an enhanced transparent response to alcohol. The hierarchical structured PLA/PVDF

Filter materials are widely used in the capture of fine particulate matter (PM), however, there are some problems such as low filtration efficiency, difficult cleaning and low air flow still need to be solved eagerly. In this work, a high-performance PM2.5 capture as well as high productivity (1000 m2/day) was fabricated by introducing an ultra-thin polyvinylidene fluoride (PVDF) nanofibrous layer

With the development of high frequency and high integration of electronics such as 5G technology, overheating problem becomes an increasingly challenging problem. To address this pressing issue, the designs and innovations of high-performance polymer-based thermal interface materials (TIMs) with excellent heat dissipation ability are urgently demanded. This review summarizes the physical fundamentals

Synthesis of in-situ composite CNTs/nAl2O3 was studied. CNTs/(5–15 wt %)nAl2O3 composite was obtained varying the initial Al-contained materials with or without calcination at 700 °C. The CNTs/nAl2O3 nanopowders were comprehensively characterized by XRD, TEM, SEM, EDX, and electron diffraction methods. The morphology of the in-situ synthesized composite CNTs/nAl2O3 was found as a net-shaped structure

The aim of this study was to carry out simulations and perform experimental quasi-static delamination tests in modes I and II to characterize the behavior at a hybrid interface. For that purpose, contact angle, infrared spectroscopy and energy balance model results were obtained to characterize the physical interfacial energy behavior. The simulations and experimental tests presented similar values

Poly(coumarate)s has been widely recognised as biobased liquid crystalline polymers and their monomers are used for developing photoreactive materials. In addition, the monomers are synthesized via shikimate pathway in plants and bacteria. Further, these monomers are used as precursors for developing polyesters with enhanced mechanical properties. The biobased monomers such as p-hydroxy cinnamic acid

In-situ X-ray tomography is an effective means for the acquisition of time-resolved 3D images of fiber reinforced composites during mechanical loading and deformation. However, the manual comparison of corresponding in-situ X-ray images at successive loading instances to detect damage and its propagation is a time-consuming process. To improve the detection of damage using in-situ X-ray tomography

In the current work, a real-space phase field model based on the Landau theory is established to study tetragonal to monoclinic phase transformation in nanocomposite zirconia. The model successfully captures the superelasticity behavior of nanocomposite zirconia above the equilibrium temperature, and obtains the main characteristics of martensitic transformation with different mismatch strains of the

Thermally conductive polymer composites have become a research hotspot and an important branch in the fields of thermal conduction such as 5G communication equipment, electronic packaging and energy transmission due to their light weight, easy processing and low manufacturing cost, etc. However, the thermal conductivity coefficients (λ) of reported thermally conductive polymer composites are far from

Structural health monitoring (SHM) of chemical penetration in composites is a critical issue for their durability as composite storage. Current methods are either complicated or expensive. Besides, the wired sensing system introduces defects in the composite structure. Herein, we present a novel wireless sensing design for detecting aggressive chemicals in composite reservoirs. Remarkably, the sensing

This paper reports the results obtained after carrying out tests on specimens of two types of composite materials. These materials have the same polyetherimide (PEI) thermoplastic matrix, but a different type of reinforcement. In both cases, the reinforcement is fabric, one being made of carbon fibre and the other, of fibreglass. The specimens were tested after various periods of exposure to an outdoor

A new kind of PTFE composite with self-contained solid-liquid synergetic lubricating effect is prepared by the combination of PTFE, porous diatomite (DE), and immersed lubricating oil (ATF6). The tribological and mechanical properties of composites with different DE contents and varying cold-pressed pressures were investigated systematically. Due to the oil storage effect of DE particles, the maximum

Polytetrafluoroethylene has been widely applied in advanced electronic devices due to low dielectric loss and high thermal stability. Nevertheless, its low thermal conductivity can't satisfy heat diffusion demand under the situation of high-frequency and high-speed signal transmission. The PTFE-based composites filled with hybrid fillers of Li3Mg2NbO6 ceramic particles and hexagonal boron nitride sheets

To develop eco-polymeric materials is of significant importance to protect the global environment and promote the sustainable development of human society. Poly (propylene carbonate) (PPC) as a new biodegradable polymer has attracted much interest, but some properties of PPC have to be improved before the practical utilization. In this work, the re-dispersible unmodified laponite and montmorillonite

Present research work investigated the vertical integration of fibres by using newly proposed structural indices in needle punched nonwoven fabric. A new methodology was also proposed to measure the orientation of fibre in the Z direction of nonwoven fabric. The colour summarization technique was used to measure the percentage of fibre transfer from different layers and area covered by holes. The influence

Polymer composites in marine structures that operate under seawater environment may be seriously affected, reducing durability estimates. This work aims at evaluating the effect of seawater exposure at 80 °C for 7–28 days on filament-wound glass fiber/epoxy composite cylinders partially cured by passing saturated steam through them just after winding seeking a faster curing route. The winding angle

In this work, carbon fabric-reinforced epoxy (CF/EP) composites reinforced by graphene oxide-coated short glass fibers (GO/SGF) were manufactured and characterized. The interlaminar shear strength (ILSS) of CF/EP composites at room temperature (RT) and cryogenic temperature (77K) was compared, and the enhancement mechanism was revealed through the analysis of microstructure. The result shows that bonding

Nowadays, extensive efforts are devoted to develop efficient ways to prepare in-situ fibrillated polymer-polymer nanocomposites which are both strong and ductile. Using entirely bio-sourced polymers is essential to keep a green nature of the obtained nanocomposites. In current work, sustainable in-situ green nanocomposites of polylactide (PLA) and biosourced polyamide (PA) were obtained in one stage

Flame retardation of poly (vinyl alcohol) with oligophosphonates, either as singular flame retardant filler or in the presence of intumescent additives, is a key to achieving eco-friendly advanced composites with improved reaction-to-fire properties. Herein, following a facile synthetic approach, PVA/oligophosphonate/ammonium sulfate composites were prepared via casting method. It was demonstrated

Traditionally, transition metal oxides (TMOs)-based electrodes suffer from remarkable volume expansion and high risk of electrode pulverization during lithium intercalation and extraction. To tackle this issue, various structures have been incorporated into electrode structural design of TMOs. Herein, through the in-situ growth of cobalt-based metal organic frameworks (MOFs) and subsequent calcination

Metal matrix composites are catching the eyeballs of various industries because of their enhanced properties like higher strength value over lesser weight, good stiffness and satisfies wide applications throughout. But to bring composite to use, always necessitate some machining process which remain a challenge for its user. In current research work, three Aluminum Metal Matrix composite (AMC) have

The determination of in-plane coefficients of thermal expansion (CTEs) of full-stack composite laminates by means of thermo-mechanical analysis (TMA) is affected by free-edge effects. A numerical study has been performed, which is focussed on the quantification of the effects of TMA sample size, laminate layup and the presence of discrete interleaf layers on the determined laminate CTEs. Fine finite-element

In this research, we synthesized GO by a Hummer's method and decorated with it MnFe2O4 magnetic nanoparticles that is synthesized by the sol-gel method to remove methylene blue dye as a primary cationic organic dye pollutant model, from wastewaters. Successful removal of MB has been achieved on MnFe2O4/rGO magnetic nanoparticles (MRGO) having a surface area of 95 m2/g at different pH with maximum adsorption

Graphene holds promise for the development of advanced materials from battery electrodes to sensors to structural composites. However, the current preparation methods of graphene rely on long-time oxidation where particularly hazardous materials are involved. We herein report a simple, cost-effective approach to scalable preparation of solution-processible yet high-structural integrity graphene, by

Electrospinning as a versatile technology has attracted a large amount of attention in the past few decades due to the facile way to produce micro- and nano-scale fibers featuring flexibility, large specific surface area and high porosity. Stimuli-responsive polymers are a class of smart materials that are capable of sensing surround environment and interacting with them. Therefore, the combination

The effect of curing and ageing temperature on the moisture absorption behaviour of the epoxy and its carbon fibre composite material is investigated. The epoxy and the composite specimens were fabricated with equal volume, and their moisture uptake was measured at two different curing conditions (room and post-cured) and ageing temperatures (24⁰C and 60⁰C). The diffusivity constant and the moisture

Different from traditional compounding methods, a conversion method from “sand-like” to “stone-like” conductive network aimed at improving the thermal conductivity (TC) of polymer composites was proposed in this paper. Herein, “sand-like” and “stone-like” channels represented the thermal conductive networks (TCNs) with high and low thermal dissipation performances in polymer composites. The densification

In this work, poly(lactide-ε-caprolactone) copolymer grafted lignin nanoparticles (LNP-g-P(LA-CL) were synthesized, through a ring-open polymerization (ROP) of L-lactide and ε-caprolactone, initiated from the hydroxyl groups on LNP surface. Then PLA, PCL and various amounts of the copolymer were blended via a facile solvent casting approach. Mechanical tests showed that the addition of 6 wt% LNP-g-P(LA-CL)

This study reports a new damage quantification method for fiber-reinforced composites using the acoustic emission (AE) b(Ib)-value. Plain-woven carbon fiber/epoxy composite specimens were prepared and their AE signals were analyzed under cyclic loadings (10 cycles per step, up to 700 MPa of tensile stress). The analysis showed that fiber breakage and interfacial failure occurred in the low stress region

Polypropylene (PP) composite pellets with 5–30 wt% carbon black (CB) were blowed with subcritical CO2, and then employed as building blocks to assemble into large-sized PPCB foam broad with dimension of 60×30×10 cm3 by steam-chest molding. The resultant PPCB foams showed a closed-cell structure with cell size in hundreds of micrometers, which endowed them with low densities of 0.034–0.117 g/cm3. Due

In this work, nanosized magnesium oxide decorated iron oxide nanorods (Fe2O3–MgO) were synthesized by simple one step hydrothermal method using magnesium nitrate, ferric nitrate and polyethylene glycol as starting materials. Here polyethylene glycol acts as a stabling agent. The obtained products were used as adsorbents for the elimination of toxic Congo red (CR) dye from water. TEM images showed the

To instruct optimal design of sandwich panel with cutout, stress/strain concentration factor (SCF) and failure envelope of composite lattice-core sandwich panel (LSP) with circular cutout under multi-axial in-plane loads were investigated by numerical simulations and verified by digital image correlation (DIC) technique. SCF of the laminated composite skin is much higher than the orthotropic lattice

Nitrogen-doped porous ultrathin layered carbon (LC) was prepared via annealing alkaline lignin with melamine and urea. As the anode material of sodium-ion batteries, the as-prepared LC shows high reversible capacity, outstanding rate performance and excellent cycling performance. In particular, the ultrathin graphitic carbon with large surface area and pore volume provide abundant sodium storage active

A fingerprint is one of the unique and authoritative information for personal identification; however, the entire three levels of ridge patterns, especially clear sweat pore information, can not be facilely obtained by the current methodologies. Herein, after careful investigation on the physiological structure of a fingertip, we describe the use of a super-soft and water-sensitive poly (vinyl alcohol)

In virtue of its excellent performance and abundant surface terminations, MXenes, a newly emerged 2D materials, greatly exhibit promising applications in many fields of energy storage and electromagnetic shielding. Ti3C2, a member of MXenes, is widely investigated in recent years. However, lack for attention in thermal property and corrosion behavior. Here, Copper matrix composites were prepared by

Ag–[email protected] hydrogel-nanocomposites were prepared by embedding copper nanoclusters (CuNCs) and silver nanoparticles (AgNPs) in the hydrogel matrix of folic acid (FA). This nanocomposites exhibited high catalytic activity for the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) in the presence of H2O2. On the basis of the excellent SERS properties of Ag–[email protected], the reaction process

Herein, the flexible and highly conductive polypyrrole/polyamide 6 (PPy/PA 6) nanocomposite film with unique core-shell architecture has been prepared via a facile chemical oxidative polymerization method. By optimizing the parameters included feed ratio, ferric ions concentration and reaction time, the PPy coating was observed to in-situ growth on the electrospun PA 6 nanofiber surface, leading to

Pathogenic microbial contamination poses serious threats to human healthcare and economies worldwide, which instigates the booming development of challenging antibacterial materials. N-halamine fibrous materials (NFMs), as an important part of antibacterial materials, featuring structural continuity, good pore connectivity, rapid sterilization, rechargeable bactericidal activity, and safety to humans

The lack of research focused on quantifying the effects of fabrication process on the mechanical properties of carbon fiber sheet molding compounds (CF-SMCs) limited the industrial applications because the fabrication processes have a significant effect on the mechanical properties. Chopped carbon fiber tape reinforced thermoplastics (CTTs) are a novel type of CF-SMCs with outstanding mechanical performance

In the present work, short carbon fiber reinforced polyamide 6 (CF/PA6) as fused deposition modelling (FDM) feedstock is developed in order to manufacture lightweight honeycomb structure with low cost and enhanced mechanical performance. The effects of processing parameters during FDM printing on mechanical properties and interlayer adhesion are investigated. First, tensile properties of FDM-printed

A new type of solution-processable carbon nano-composite as a corrosion inhibitor has been synthesized by in situ polymerizations of poly (o-anthranilic acid) (PAA), graphene oxide (GO) and functionalized multi-walled carbon nanotubes (f-MWCNT). Different types of material characterization techniques characterized the morphology and chemical composition of the prepared nanocomposites. The prepared

This work investigates the effect of Al2O3 and ZrO2 addition on microstructure and mechanical properties of Ni based functionally graded composites (FGCs). The cylindrical pellets of different compositions of three layered FGCs were prepared through mechanical alloying followed by compaction and conventional sintering. The sintering was conducted at 1200 °C for 90 min under vacuum atmosphere. Microstructure

In this work, graphene oxide (GO) with a content in a range of 0.0–0.5 wt% was introduced to modify epoxy resin. The room temperature (RT) and cryogenic temperature (77 K) mechanical properties were systematically studied for the carbon fiber/GO-modified epoxy composites prepared by hot-press molding process. The results show that a good dispersion of GO in epoxy resin leads to an enhanced carbon fiber-epoxy

SnO2@MWCNT wave absorbent was firstly fabricated via a hydrothermal process followed by heat treatment. Then SnO2@MWCNT/silicone rubber wave-absorbing composites were obtained by solution casting method. XRD, Raman, TGA, XPS, and TEM analyses indicated the successful preparation of covalently bonded SnO2@MWCNT absorbent with encapsulation structure. When the mass fraction of SnO2@MWCNT was 7.5 wt%

In the current era, sustainability and biodegradability are two necessary terms, which are related to the composite materials. Due to environmental sustainability use of the natural fibres as reinforcement is increased in composites for various applications as compared to glass fibre. In this research work, jute fibres are used as reinforcement due to the low cost and Polypropylene (PP) as matrix due

Improvement of the properties of polymer materials can extend the applicable fields of their usage. In this study, we present that the dispersibility of carbon nanotubes (CNTs) plays a critical role in the thermal stability of CNT/silicone rubber nanocomposites. Appropriate dispersion, which can be confirmed by a Raman mapping technique, can increase the temperatures at 5% weight loss (Td,5%) of the

Constructing interface with customized structures of fiber composites is an effective method of achieving high performance. Herein, the comb-like polymer interface with a rigid-flexibility transition structure was constructed on the PBO fiber surface through the layer-by-layer (LBL) method. Compared with original PBO fiber composites, the interfacial adhesion and stability of interface structures were

Air pollution resulted from particulate matter (PM) has rendered great risks to the global safety concerns. However, most existing filters used for air filtration are usually thick, bulky, and suffer from the trade-off between filtration capability and air permeability. Here, for the first time, an innovative electronetting technique is reported to create continuous and totally integrated 2D ultrathin

Conventional plain concrete (PC) leads to large design thickness when used in applications where high flexural strength is required. Therefore, to minimize the consumption of natural resources and to avoid large design thickness, it is fundamental to upgrade the flexural strength of PC by using supplementary materials i.e. steel rebars, fibers. This study evaluated the environmental and economic performance