The present work aims to prepare biocomposites based on natural rubber reinforced with nanocrystalline and modified nanocrystalline cellulose as biodegradable fillers to strengthen natural rubber instead of traditional fillers, as well as evaluating the effect of adding them in different proportions on the rheological, mechanical and electrical properties. Acid hydrolysis process was used to prepare

Butyl rubber/hydrophobized graphene oxide (HG) nanocomposites were prepared by solution mixing followed by compression molding process, and evaluated their properties using scanning electron microscope (SEM), oscillating disc rheometer (ODR), universal testing machine (UTM), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The hydrophilic graphene oxide (GO) obtained through

Waste tire rubber is commonly recycled by blending with other polymers. However, the mechanical properties of these blends were poor due to lack of adhesion between the matrix and the waste tire rubber. In this research, the use of electron beam irradiation and (3-Aminopropyl)triethoxy silane (APTES) on enhancing the performance of 50 wt% reclaimed tire rubber (RTR) blend with 50 wt% poly(ethylene-co-vinyl

Superplasticizers (SPs) are an indispensable ingredient to prepare high performance concrete. In the present work, sodium sulfanilate (ASAA), bisphenol A (B) and formaldehyde (F) were used as the reactive monomers, the sustainable aminosulfonate-bisphenol A-formaldehyde (ASBF) SP was synthesized. The functional groups, the weight-average molecular weight (Mw), the number-average molecular weight (Mn)

PVA fibers with high strength and high modulus are very attractive in many potential applications. However, there is a difficulty when enhancing the strength and modulus of PVA fibers. To overcome this difficulty, here we report a method to enhance the strength and modulus of PVA fibers by synthesis of high polymerization degree (DP) and high syndiotacticity diad content (S-diad) PVA polymers with

Improving the heat dissipation efficiency of electronic products is the key to the design of many modern electronic and mechanical systems. Herein, we combined the 3D network fabricating with the way of micron-nano reinforcement to prepare high thermal conductivity and excellent thermal stability composites. Epoxy resin was used as the matrix, while the silicon carbide foam (f-SiC) as skeleton and

Three different Chitosan/ZrO2 (CTS-ZrO2) composites are prepared by sol–gel then, used as bio-sorbent for Cs (I) and Co (II) metal ions from aqueous solution in this study. Characterization of (CTS-ZrO2) composites is done through different analytical techniques. Optimizations of the adsorption affecting factors are explored via batch mode. The adsorption equilibrium attained after 60 min for initial

The administration of parenteral medicines was always being an unacceptable route in long-term treatment related to patient desires. The ultimate goal of the current study was to rectify patient discomfort by developing an oral and mechanically strong polymer PF127 based hydrogels with controlled drug-delivery to treat Type 2—Diabetes Mellitus for an extended time-period. Vildagliptin (Anti-Diabetic

Bio-based semi aromatic high temperature polyamide PA5T/56 was synthesized by one-step high temperature and high pressure solution polymerization with bio-based monomer pentanediamine. The non-isothermal crystallization behavior of PA5T/56 was studied by differential scanning calorimetry (DSC). Mo equation was used to describe the non-isothermal crystallization kinetics. The activation energy of non-isothermal

In the available research, firstly a new 3-acetamido phenyl acrylate (APhA) monomer and a novel copolymer containing acetamido phenyl group were synthesized. 3-acetamido phenyl acrylate (APhA) monomer was acquired by the reaction of acryloyl chloride and N-(3-hydroxyphenyl) acetamide. 3-acetamido propyl methacrylate (AAPMA) monomer was prepared in our previous study. A series of copolymers were prepared

A new carbazole terminal nanosilica reinforced polybenzoxazine (nSiO2/PBZ) was synthesized using carbazole terminal benzoxazine monomer (CBZ) and nanosilica through in-situ sol-gel method. The FT-IR spectra were helped to confirm the formation of the hybrid nanocomposites. The PBZ-nSiO2 hybrids were accounted for their excellent thermal stability and good char yield due to the presence of the inter-cross

In this work, Makrofol DE 1–1 films were treated with O2 plasma for different treatment times ranging from 60 to 120 min at applied power 3.5 W and working pressure 0.4 Torr. The induced changes in Makrofol surface properties after plasma treatment were examined with Atomic Force Microscope (AFM), Scanning Electron Microscope (SEM), Photoluminescence (PL) spectroscopy, ultraviolet–visible (UV–Vis)

A new thermoset PLA resin was synthesized. The structure and performance of the thermoset PLA resin were characterized by Fourier transform infrared spectroscopy (FTIR), 1H Nuclear Magnetic Resonance (1H-NMR), 13C Nuclear Magnetic Resonance (13C-NMR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) testing methods. The results indicate that thermoset PLA resin has been

Glass fiber reinforced epoxy nanocomposites are synthesized with different weight percentages of MgO nanofillers to improve their mechanical and electrical properties, especially for aerospace and high voltage insulation applications. Static contact angle studies have shown that 3 wt% MgO nanofiller added specimen has a higher contact angle, indicating a better surface profile. Marginal increment in

The noted Design of a new and effective radiation shielding material is a growing demand to reduce the harmful effects of ionizing radiation in medical and nuclear applications. In this research article, three silver nitrate (AgNO3) doped PVA polymers were reported to serve as potential shielding materials against gamma ray. These polymers were tested in terms of their polarizability, optical transmission

Here, an efficient phosphorodiamidate (PPAE) reactive diluent functionalized with phosphonate ester was synthesized as a cross-linker with ultraviolet-curable epoxy acrylate for use in coating applications. The functionality of the phosphorodiamidate and structural properties of the reactive diluent were evaluated by gas chromatography–mass spectrometry (GC-MS), proton nuclear magnetic resonance (1H-NMR)

Due to the outstanding properties comprised of thermal, anti-corrosion and excellent processing properties, the polyurethane coating has received attention from many researchers. However, absence of self-healing capacity limited their applications. In the present work, a self-healing polyurethane (PU) was developed for protective coating via Diels–Alder reaction. Moreover, incorporation of Halloysite

The influence of hydrogenated petroleum resin E5415 on the crystallization behavior, crystallization kinetics and mechanical properties of polyethylene for biaxially stretched films were systematically investigated by differential scanning calorimetry, small-angle X-ray scattering, wide-angle X-ray diffraction, melt flow index measurements and tensile mechanical performance test. The experimental results

Polymer blends and polyblend nanocomposites are very important for developing new materials in the field of polymer science and technology. Polypropylene (PP)/Polylactic acid (PLA)/ Halloysite nanotube (HNT) nanocomposites can be considered as one among such systems. In order to have more interfacial interaction between the polymer components a compatibilizer, maleic anhydride-graft-polypropylene is

In this work, in a first step, a novel methacrylate monomer, 2-(4-hydroxyanilino)-2-oxoethyl-2-methylprop-2-enoate (HAOEME), was synthesized containing a phenolic hydroxyl group in the side branch. Then, the copolymers of this monomer were obtained by a free radical solution polymerization method with glycidyl methacrylate (GMA), a commercial monomer, at 65 °C in 1,4-dioxane solvent. The structural

Composite of sodium metavanadate (NaVO3) and polyaniline (PANI) was formed by in-situ chemical polymerization in one step. Characterization techniques such as X-Ray diffraction, Scanning electron micrograph, and Fourier transform infra-red spectra confirm mixed phase of formation NaVO3inPANI emeraldine salt. Conductivity decreases with an increase in wt of NaVO3in PANI, the conductivity increases with

Three chitosan-derived compounds, Ch-I, Ch-Qn, and Ch-TPA, were synthesized through condensation reactions between high-molecular weight chitosan and three different aldehydes. Mechanosynthesis, a fast and solvent-free synthesis method, was used instead of a depolymerization. The chemical structure of the compounds was elucidated by Fourier-Transform Infrared (FT-IR) spectroscopy. The optical properties

The present study investigates new polyurethanes with improved stability to UV radiation by the inclusion of azobenzene side groups on the polymer main chain. These polyurethanes were prepared from a prepolymer (polycaprolactone diol and 1,6-hexamethylene diisocyanate) with 2,4-dihydroxyazobenzene (Sudan Orange G) as a chain extender. A polyurethane chain-extended with 1,4-butanediol was prepared for

Gas barrier in polymers is able to be effectively enhanced by adding air-impervious nano-fillers. It is inevitable that there are some defects or caves on the surface of nano-fillers, which can have a certain effect on the gas barrier. The effect of defects and caves in nano-fillers was investigated using the finite element model in order to better understand the diffusion process in a polymer nanocomposite

Rheological properties of a natural rubber based magnetorheological elastomer (MRE) with spherical carbonyl iron particles (CIPs) and plate-like Sendust particles as soft magnetic particles were investigated. Isotropic and anisotropic MRE samples were prepared by molding in the absence or presence of magnetic field. Different shape of magnetic particles provided significant effect on mechanical properties

This article reports the synthesis of a bio-inspired curing agent, the tetraallyl cystamine (TAC) and the evaluation of its performance to photocure two epoxy resins derived from the terpenoid nopol, by using the epoxy/thiol-ene photopolymerization technique. The curing agent was prepared in two stages: a) reaction of the diallylamine with ethylene disulfide, through a mercaptoethylation reaction and

Thin film composite (TFC) technology has been widely used to prepare reverse osmosis (RO) membrane, in which the relationship between support layer and selective layer plays a significant role. To thoroughly clarify the influence of support layer pore size on the properties of selective layer, herein, we prepared a series of polysulfone (PSf) support layers with different surface pore sizes by adjusting

The present study utilized chitosan obtained from crab shell and transition metal salts as precursors to synthesize chitosan-metal coordination biopolymers of Mn(II), Fe(III), Co(II) and Ni(II) [i.e. Chit-Mn(II), Chit-Fe(III), Chit-Co(II) and Chit-NI(II) respectively]. The synthesized coordination biopolymers have been characterized using different instrumental techniques such as spectroscopic (UV–visible

Carbon fiber paper–reinforced thermoplastics (CPTs) are widely used because of their formability and superior mechanical properties. Polyamide 6 (PA6) is used as a resin matrix in carbon fiber-reinforced composites owing to its good mechanical properties and adhesion with the carbon fibers. However, PA6 tends to absorb moisture because of the presence of hydrophilic groups in the polymer backbone.

Self-reinforced polymers (SRPs) show many advantages such as greater ductility, lightness, and recyclability compared to glass or carbon fiber-reinforced composites. A process from pellets to produce Self-reinforced PolyEthylene (SRPE) composites reinforced with continuous polyethylene Doyentrontex® yarns is proposed. The architecture of the reinforcement or defects in the composite can mask the effects

The ongoing COVID-19 pandemic has pushed scientists and technologists to find novel strategies to develop new materials to prevent the transmission, spread, and entry of pathogens into the human body. In this report, the fabrication of polyvinyl chloride (PVC)-SiO2-Ag composite is presented, in which the percentage of Ag is 0.84% wt. Our findings render that this composite eliminates (> 99.8%) bacteria

The natural rubber/graphene quantum dots (GQDs) nanocomposites were prepared and their properties have been studied. Graphene oxide prepared via modified Hummer’s method was the precursor used to synthesis graphene quantum dots. The two-roll mill was used for the compounding of the natural rubber/graphene quantum dot (NR/GQD) nanocomposites. The nanocomposites are characterized using UV–visible Spectroscopy

A mercury ion imprinted polymer material was prepared using a thiourea derivative functionalised graphene quantum dot (GQDTU) as the functional monomer using suspension polymerisation technique. This ion imprinted polymer (GQDTU-IIP) material was used to modify the surface of a glassy carbon electrode by drop casting method. The modified electrode was used for the detection of mercury using cyclic

An innovative molecular imprinted polymer based on KH-570 modified SiO2-coated cadmium telluride quantum dots was prepared as fluorescence sensor for sulfadimidine (SM2) sensitive and selective detection. The quantum dots were firstly encapsulated in silica by sol–gel process, and then the double bond was modified on the surface of silica with KH-570. Finally, the molecular imprinted layer was synthesized

A facile and efficient mussel-inspired bonding method is developed to improve the interfacial adhesion of polyamide cord/rubber composites by introducing silica coated with polydopamine (PDA). PDA layer is deposited on the silica surface by simply dipping the silica particles into an alkaline dopamine solution. The core–shell structure can endow polyamide cord/rubber high adhesion strength through

Abstract This article focused on the fabrication of 7-hydroxy 4- methyl coumarin (7H4MC) dye doped Polyvinyl alcohol/Oxidized Maize Starch (PVA/OMS) blend films by employing user friendly solvent casting technique. The thermal stability, crystallanity, surface morphology and optical properties of the films were investigated by using Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry

As an important branch of polymer field, hyperbranched polymers have developed rapidly recently, which have been applied in various fields because of its outstanding biodegradability and biocompatibility, especially in biology and coatings. According to reaction mechanism, the fabrication methods of hyperbranched polymers include polycondensation, ring-opening polymerization, living polymerization

A bacterial cellulose (BC) based adsorbent was prepared by using polyethyleneimine (PEI) using epichlorohydrin as a cross-linker. The physicochemical characterization of the of the developed adsorbent was carried out using FTIR, BET analysis and SEM, respectively. The dye removal efficiency of the adsorbent was assessed towards two anionic model dyes viz. congo red (CR) and reactive red 120(RR). The

As additively manufactured components move away from short-term usability, such as single-use prototypes, towards commercial products used for longer periods of time, the long-term material properties, such as ageing and creep, are becoming increasingly important design considerations. Moreover, when additively manufactured components are designed for outdoor use, environmental stressors affect these

At present, the research hotspot of polyurethane synthesis focuses on developing bio-based materials with ecological and excellent performance. This paper synthesized a series of castor oil-modified bio-based waterborne polyurethanes (CWBPU) by adjusting the castor oil (CO) content. We used 1,5-pentamethylene diisocyanate and bio-based polyether polyols as base materials. CWBPU had the advantages of

Novel thermoplastic polyurethane (TPU)/multi walled carbon nanotubes (MWCNTs) conductive nanocomposites were fabricated by direct solution compounding method for volatile organic compounds (VOCs) sensors applications. The results of field emission scanning electron microscopy (FESEM) and electrical conductivity test showed that MWCNTs formed ideal conductive networks in TPU matrix. The volume conductivity

Chitosan-capped stable silver sols (Chit/AgNPs) were fabricated using a chemical reduction method. Chit/AgNPs exhibited a sharp surface plasmon resonance (SPR) peak at 420 nm. The resulting orange-colored sols became colorless after the addition of ferric (Fe3+) ions at room temperature. Chitosan formed a stable complex with Fe3+ ions. The relative viscosity measurements revealed that the chitosan

In this paper, we present a simple route to synthesize PBS/nHAP polymer nanocomposites and share our findings on the influence of nHAP (filler) on the PBS (matrix). The filler weight content was varied from 0.0 g to 0.10 g. These effects that were investigated were the structural, morphological, mechanical, wettability, and roughness parameters. The X-ray Diffraction (XRD) spectra revealed that PBS

To achieve the effluent standards or water purification, many water-treatment methods including membrane separation have been applied to separate the oily contaminations and clean water. However, most of the membranes displayed a low separation efficiency or poor reusability due to the functional group loss or their surface adhesion of contaminations including oil and biofoulings. Thus, in this work

Poly (ionic liquid)s attracted enormous attention as adsorbents for the CO2 separation from natural gas. Hence, in this work poly (1-butyl-3-vinylimidazolium bromide), P[VBIm][Br], poly (1-butyl-3-vinylimidazolium thiocyanate), P[VBIm][SCN], and poly (1-butyl-3-vinylimidazolium tetrafluoroborate), P[VBIm][BF4] were synthesized and evaluated their CO2 adsorption performance. The synthesized poly(ionic

The complexes of metformin (MET) and the copolymer of N-vinylpyrrolidone with triethylene glycol dimethacrylate with absolute molecular weight ca. 26 kDa and hydrodynamic radius of macromolecules about 4 nm have been prepared and studied in water buffer solution. Their sizes in neutral phosphate buffer solution depended on MET (10–40 wt%) per the copolymer content, temperature and the copolymer concentrations

The syntheses of new materials using vegetable oils have increased due to technological interest and low environmental impact. Baru nut provides baru oil, rich in linoleic and oleic fatty acids that can be modified into epoxides compounds. Thus, the optimization of the epoxidation synthesis of baru vegetable oil by the conventional thermal route was investigated using green and quick heterogeneous

Wound management is essential to provide an appropriate environment for healing or avoiding wound or postsurgery contamination, which remains a serious clinical issue. In this study, we developed a novel wound dressing by using the electrospinning technique to draw continuous polymeric fibers from either a polymer solution or polymer melt to fabricate wound dressings with good medicinal properties

The new aromatic m-catenated diamine, N-(3, 5-diaminophenyl)-4-(naphthalen-8-yloxy)benzamide was synthesized from 1- naphthol and 4- fluoro benzonitrile. A series of novel aromatic polyamides; containing pendant bulky naphthalene-8-oxybenzamide unit; was synthesized from the diamine and several structurally different aromatic diacids such as 4,4’-Oxydibenzoic acid, Naphthalene-2, 6-dicarboxylic acid

In this study, the effect of protonectin as an antimicrobial peptide in its encapsulated form into PEG-PCL Nano micelle on bioability of human cancer lung of A549 was investigated. By applying 12 µg/ml and 50 µg/ml of the peptide in its encapsulated form and post 24 h and 48 h cell treatment, highest cytotoxicity on A549 was noticed. Biodegradable and biocompatible micelles were made by connecting

The effect of comonomer composition on structural and surface properties of poly(ethylene-ran-propylene) thin films at various ethylene fraction were studied by Monte Carlo simulation of coarse-grained copolymer model on the second nearest neighbor diamond (2nnd) lattice. Intramolecular and intermolecular interactions of poly(ethylene-ran-propylene) were treated by the Rotational Isomeric State (RIS)

Anhydroxylitol tripelargonate (AXP), a novel environmentally sustainable plasticizer for poly(lactic acid)/poly(butylene succinate) (PLA/PBS) blends, is successfully synthesized. The chemical structure of AXP is confirmed by FTIR and 1H-NMR. The influence of varying the addition of AXP on mechanical property, thermal property, crystallization, rheological behavior and micromorphology of PLA/PBS blends

Chitosan and carboxymethyl chitosan-based hydrogels were prepared by crosslinking the biobased polymers with hexamethylene diisocyanate (HDI). The hydrogels were obtained in a simple one-pot route, using water as solvent, at room temperature and without the use of other additives. The obtained materials were characterized using Fourier transform infrared spectroscopy (FTIR), Thermogravimetric analysis

In a catalyst free environment, thermo-responsive shape memory polyurethane was synthesized by one-pot process. A series of PU- nanocomposites were created using varing concentrations of FMWCNTs using solution mixing approach. The FTIR and RBS analysis were used to characterizethe designed PU and its nanocomposites. Smooth surfaces with uniform dispersion with few aggregations were confirmed by SEM

In the present work, two most important hybrid shear thickening fluids (STFs) are synthesized and embedded into the untreated Kevlar (04 and 08 layers) to promote the impact performance. The experiments are performed to investigate the various impact parameters such as ballistic limits, residual velocities, energy absorption, etc. of different samples (untreated Kevlar and CNT & Graphene infused hybrid

Hydroxyl-terminated natural rubber can be used as an eco-friendly and renewable bio-based polyol for the production of sustainable polyurethanes. It can also have other advantages such as high elasticity and thermal stability over many other conventional polyols. Liquid natural rubber (LNR) with primary and secondary hydroxyl end-groups was prepared via ozonolysis of natural rubber (NR) in chloroform

In the current study, proton conducting polymer blend electrolytes have been prepared with poly (vinyl chloride) (PVC), poly(methyl methacrylate) (PMMA), Ammonium thiocyanate (NH4SCN) salt and Tetrahydrofuran (THF) as solvent through solution-casting method. The complexation of these films have been studied by FTIR spectroscopy. The increase in amorphousness of the films with the increase in NH4SCN

In this work, rheological properties of a novel fabricated random high impact polypropylene-based copolymer, PBE, which possessed excellent properties of transparency and impact resistance, were studied. The studying included shearing stress, apparent shearing viscosity, viscous flow activation energy, extrudate swelling ratio, melt strength and melt extrusion morphology et al. The study was based

Polycaprolactone (PCL) and hydroxyapatite (HA) composite are widely used in tissue engineering (TE). They are fit to being processed with three-dimensional (3D) printing technique to create scaffolds with verifiable porosity. The current challenge is to guarantee the reliability and reproducibility of 3D printed scaffolds and to create sterile scaffolds which can be used for in vitro cell cultures