Linear adjustable efficient nanocontrollers that could respond to pH signals to trigger selective drug release were designed and discussed. They were fabricated by encapsulating theophylline into hydroxypropyl methylcellulose acetate succinate nanofibers through coaxial electrospinning. Theophylline was fixed in the core layer in an amorphous state. in vitro drug release behaviors were examined in

Poly(vinyl chloride) (PVC) is commonly used in many industrial applications. Ultraviolet (UV) radiation causes undesirable changes to PVC properties. Therefore, PVC should be protected from radiation to increase its lifetime for outdoor applications. Here, new organotin complexes containing captopril were synthesized for use as low‐concentration additives to enhance PVC photostability. Reacting captopril

Properties of silicone thin films and coatings are strongly hooked on curing reaction. We discussed about cure process of silicone nanocomposites containing halloysite nanotube (HNT) at different loading levels (0.5, 1.0, and 2.0 phr), both qualitatively and quantitatively. Systems containing pristine and aminosilane‐functionalized HNT were cured nonisothermally and heat buildup of the reaction was

Ternary polymer blends based on polypropylene (PP)/poly(styrene‐ethylene‐butylene‐styrene) (SEBS)/polycarbonate (PC) compatibilized through maleic anhydride‐grafted SEBS were prepared using a twin‐screw extruder. Four different compositions in which the weight ratio of SEBS constituent was varied from 5% up to 30% were formulated in order to assess the relation between morphology and mechanical properties

This article presents the fabrication of super‐hydrophobic cotton fabric using titanium dioxide nanoparticles and tetraethyl orthosilicate, alongside control samples modified by 1H,1H,2H,2H‐perfluorooctyltriethoxysilane. The samples were analyzed using scanning electron microscopy and Fourier transform infrared spectrometry, and then, the water contact angles were measured. Moreover, the durability

Chrysanthemum flower is among one of the highly sought after and widely planted flower crops, in particular for cultural and religious ceremonies. However, the chrysanthemum stem and stalk have little value and usually discard as by‐product waste from floristry. The objective of this research is to investigate the potential value of utilizing chrysanthemum stem and stalk as reinforcing fillers for

This research investigated the effects of a compatibilizer of maleated polybutadiene‐grafted polypropylene (MAPB‐g‐PP) on the properties of wood‐flour/polypropylene composites through the analysis of mechanical properties, water absorption, thermogravimetry, differential scanning calorimetry, and scanning electronic microscopy. The results demonstrate that the mechanical properties of composites were

Within the scope of this study, blended cement pastes were prepared by replacing different proportions of ordinary Portland cement with ceramic waste powder (CWP). The hardened blended cement pastes were cured under tap water for different periods of time up to 180 days. Physico‐mechanical properties of specimens were studied in terms of free lime content, chemically combined water, compressive strength

A series of multiarm structure hyperbranched polyester‐b‐poly(ε‐caprolactone) (HEPCLs) with different lengths of poly(ε‐caprolactone) (PCL) segments (s = 3, 6, 7, 8) were synthesized. Hyperbranched polyester (HE) was synthesized from glycidol and succinic anhydride and used as a macromolecular polymerization initiator for ε‐caprolactone. The HEPCLs were used as polyvinyl chloride (PVC) plasticizers

To improve the interfacial compatibility of jute fiber reinforced polypropylene (PP) composites, hydrothermal method was used to deposit SiO2 nanoparticles on the surface of pretreated jute fibers and the effect of reaction factors (tetraethoxysilane [TEOS] concentration, ammonia concentration, and reaction temperature) on the deposition of SiO2 nanoparticles were evaluated. The results of FTIR, XRD

The fluorine rubber nanocomposites were prepared by using the silane‐coupling agents treated silica and diatomite, in which 3‐amino propyltriethoxysilane (KH550), 3‐mercapto‐propyl trimethoxysilane (KH590), and bis‐(γ‐triethoxysilylpropyl)‐tetrasulfide (Si69) of the coupling agent were used as the filler modifiers to increase the compatibility between filler and fluorine rubber. The structure and morphology

Jatropha seed oil (JSO) is renewable oil with unique characteristics including a high flash point, low viscosity and saponification value, and a solubility parameter close to that of natural rubber. The incorporation of JSO and its epoxidized derivatives containing 50% (EJSO‐50) and 100% mole epoxide groups (EJSO‐100) in carbon black‐filled natural rubber was compared with the incorporation of paraffinic

This work was conducted to investigate the interactive effect of carbon nanotubes (CNTs) and montmorillonite (MMT) on the mechanical–physical properties of the polyvinyl alcohol (PVOH) nanocomposites. The increasing of CNTs amounts from 0.5 phr to 1 phr has gradually increased tensile strength and Young's modulus of all PVOH/MMT blends due to good interaction effect between MMT and CNTs with PVOH matrix

The silver nanoparticles are gaining extensive attention due to their tremendous applications in conductive field. In this article, we reported a green method of preparing silver nanoparticles (AgNPs) with bagasse pulp extract acting as reducing agents. In this article, ultrasonic extraction method was adopted. This extraction method has the advantages of simple operation and less impurity content

Poly(vinyl chloride) (PVC) nanocomposites were prepared via an in situ intercalative suspension polymerization of vinyl chloride with four organic carboxylic acid salts (montmorillonite [MMT] units) containing thermally stable lanthanum ions. The effects of different lanthanum organic montmorillonites (La‐OMMTs) on the particle features and molecular weight were investigated. The transmission electron

Lanthanum aminobenzoate (LAB), cerium aminobenzoate (CAB), and lanthanum and cerium aminobenzoate (LCAB) were synthesized with p‐aminobenzoic acid, lanthanum nitrate, or cerium nitrate as raw materials to study the influence of different rare earth elements on the stability of rare earth stabilizers. The thermal stability of by CAB, LCAB, and LAB toward poly(vinyl chloride) (PVC) was studied. The results

The additive manufacturing (AM) process is used to build three‐dimensional (3D)‐printed components by depositing layers of materials one over another until it completes the building process. There are numerous ways to improve its strength and rigidity of AM processed components. In this research, we discuss an effective method to improve the strength of 3D‐printed component joints by reinforcing carbon

Since the advent of 5G network, polymeric low dielectric constant (low‐k) materials have been indispensable for high speed and stable signal transmission at microwave frequency. Herein, the low‐k composites of 1,2‐polybutadiene/styrene‐butadiene‐styrene triblock copolymer/ethylene‐propylene‐dicyclopentadiene (1,2‐PB/SBS/EPDM) were prepared with cured organic peroxide. Two structurally different organic

The combination effect of organically modified montmorillonite (OMMT) and nano‐SiO2 on the fire behavior of intumescent flame‐retarded epoxy resins (EPs) was evaluated. The results from fire tests show that the combination of intumescent flame retardant (IFR), OMMT, and nano‐SiO2 exerts an outstanding synergistic effect on improving the flame retardancy and smoke suppression properties of EPs. For

Two kinds of elastomers, styrene–butadiene copolymer (SBC) and ethylene‐methyl acrylate (EMA) were compounded by melt mixing wollastonite into polycarbonate (PC). The result demonstrated that EMA‐filled composites showed better mechanical properties compared to SBC‐filled composites, particularly elongation and impact strength. We observed a 53% increase in Izod impact strength, that is, 5.3‐fold increase

Modification of poly(vinyl chloride) surface was achieved via introducing a new Schiff base containing 1,2,4‐triazole ring system to the polymer backbone. The new Schiff base containing 1,2,4‐triazole ring and the resulted homogenous polymer (PVC‐L) was characterized using Fourier‐transform infrared spectroscopy. Copper chloride was then added to coordinate with homogenous polymer to form PVC‐L‐CuII

In this article, a facile and green strategy of nonisothermal crystallization induction was proposed to produce nanocellular biodegradable polymer composite foams, which was demonstrated by a composite system of poly(butylene succinate) (PBS) modified by hydroxyl‐functionalized graphene (HG) and chain extender. Nanocellular foams of chain extended PBS (CPBS) and CPBS/HG composite were prepared successfully

In the present work, poly(lactic acid) (PLA) was modified with two peroxide initiators: biphenyl peroxide (BPO) and dicumyl peroxide (DCP). The samples were all prepared with melt compounding method. Changes in the structure of PLA after the modification were analyzed with Fourier transformed infrared spectroscopy, gel penetration chromatography, and field emission scanning electron microscopy. Thermomechanical

Flame‐retardant blends of polyethylene‐octene elastomer (POE) and natural rubber (NR) filled with expandable graphite (EG) were melt‐mixed with azodicarbonamide to prepare elastomeric foams. The effect of the NR incorporation on the properties of EG filled POE foam was investigated. Gel content and microstructure observations revealed that the addition of NR into the POE/EG blend induced change in

The main purpose of this work was the valorization of waste wood flour as reinforcement in order to develop new wood‐based polymer composites (WBPCs). For that purpose, low‐density polyethylene/poly(lactic acid) (LDPE/PLA) blends were prepared in presence of poly(ethylene‐co‐glycidyl methacrylate) (PE‐g‐GMA) as compatibilizer and reinforced with 0–40 wt% of wood flour. The tensile properties, Charpy

The effect of organopalygorskite (OPGS), molybdenum sulfide (MoS2), and magnesium hydroxide (MH) combinations on fire retardant and flammability characteristics of low‐density polyethylene/ethylene vinyl acetate (LDPE/EVA) blends was investigated using the limited oxygen index (LOI), horizontal burning test (UL‐94), and cone calorimeter measurements. The combination of OPGS with exfoliated MoS2 nanosheets

Three different blending sequences were used to prepare the peanut shell powder (PSP)‐filled polylactic acid (PLA)/thermoplastic corn starch (TPCS) biocomposites. The blending sequences can be summarized as (1) S1: PLA was added, followed by TPCS and PSP, (2) S2: PLA was added, followed by PSP and TPCS, and (3) S3: TPCS was added, followed by PLA and PSP. Various loadings of PSP filler were used from

The purpose of this study was to investigate the effect of carbon fiber (CF) and electron‐beam (EB) radiation on high‐temperature mechanical properties of ethylene‐vinyl acetate (EVA). Polymer composites were prepared by mixing on a two‐roll mill. After compression molding, the samples were irradiated between 60 and 180 kGy, and dynamic mechanical analysis (DMA) was used to characterize physical properties

Intense campaigning pressure on the UK polyvinyl chloride (PVC) sector up to the late 1990s forced strategic engagement with sustainable development. Simplified outcomes from a detailed, consensus‐based analysis by science‐based NGO The Natural Step (TNS) took the form of five TNS sustainability challenges for PVC published in 2000. UK manufacturing companies initially used these challenges to direct

Polyethylene terephthalate (PET) composites containing micro‐ and nanoglass flakes were prepared by melt blending. The percentage of nanoglass flakes was varied from 0.5, 1, 2, and 3 wt% and the concentration of microglass flakes was 1, 3, and 5 wt%. The effect of glass flake on morphology, physical, mechanical, and thermal properties of PET was studied using scanning electron microscopy (SEM), energy‐dispersive

Microtubes with superior mechanical properties are highly desired in modern medical applications due to its convenience in drug delivery and micro invasive surgery. However, poor kink resistance is still a changeling issues because the high axial orientation is inevitable in conventional tube processing procedure. Herein, with combination of rotation extrusion technology and antibacterial titanium

Preparation of hydrogels based on carboxymethyl cellulose (CMC) using direct radiation grafting technique for removal of organic contaminant such as 4‐chlorophenol and 2,4‐dichlorophenoxyacetic acid (2,4‐D) was carried out. The prepared hydrogels which are composed of individual radiation grafting of methacrylic acid onto CMC to form poly(CMC/MAA) the other hydrogel composed of binary acrylamide/methacrylic

In this work, effect of three factors on the phase morphology and mechanical properties of ternary blends based on polystyrene (PS)/ethylene‐propylene‐diene terpolymer (EPDM)/polyamide6 (PA6) was investigated by response surface methodology (RSM). Results indicated that among the studied factors (i.e., mixing sequence, composition, and viscosity ratio of the minor phases), the first two have the greatest

Nano‐Sb2O3 particles were modified by a combination modifier of cetyltrimethyl ammonium bromide (CTAB) and KH‐560 via the mechanochemical method based on high‐energy ball milling. Then, the testing specimens of the nano‐Sb2O3/PBT composites of differing compositions were prepared by melting blending technology. The crystallization, thermal, and mechanical properties of composites were characterized

New sulfadiazine tin complexes were synthesized in 67–80% yields from the reaction of sulfadiazine, and different organotin(IV) chlorides and their structures were established. The synthesized complexes were used as additives at a low concentration (0.5% by weight) to enhance poly(vinyl chloride) (PVC) photostability. The PVC samples containing sulfadiazine tin complexes (thickness = 40 μm) were fabricated

Room temperature vulcanized silicone rubber (RTVSR) nanocomposites were prepared by mixing of surface‐modified montmorillonite nanoclay or nano fumed silica, or both of them with RTVSR to improve thermal stability, electrical insulation, and flame retardant. Their tensile strength, elongation, swelling, and solubility properties at different doses of gamma radiation were investigated to study the effect

In this study, we analyze the rheological properties of epoxy/polypyrrole/carbon black coating and its performance as electromagnetic interference shielding efficiency (EMI SE). For this purpose, a commercial epoxy coating was mixed with a conductive polymer, namely polypyrrole. Rheological tests were performed to obtain the flow curve, the storage and loss moduli, the cure time and thixotropic characteristics

Broad‐temperature‐range (−85.4 to 96.2 °C) damping material was fabricated by blending amorphous styrene‐butadiene‐styrene triblock copolymer (SBS) with semicrystalline syndiotactic 1,2‐polybutadiene (s‐PB). According to dynamic mechanical thermal analysis (DMTA) analysis, SBS/s‐PB blends exhibited three consecutive damping peaks at −85.4, 2.7, and 96.2 °C. The peaks at −85.4 and 96.2 °C were associated

Bio‐waste materials such as eggshell (ES) and fishbone (FB) were used as new fillers compared with commercial calcium carbonate (CC) in natural rubber composite. The effect of their presence in the rubber mix on the rheometric study, morphology, mechanical properties, hardness, and abrasion resistance has been investigated at constant filler content (30 phr). The filler and their composites were characterized

The co‐kneader is a proper tool for processing polyvinyl chloride (PVC) compounds. Gelation of PVC is complex because of a narrow processing window. At low temperature, gelation is incomplete and leads to poor mechanical properties, while at high temperature, degradation may occur. The aim of this study is to gain a fundamental understanding of the gelation process of PVC in co‐kneaders. Careful examination

Ultraviolet absorbers and hindered amine light stabilizers are two kinds of efficient photostabilizers, which have different mechanisms. It is possible to make a synergistic interaction if introducing these two types of photostabilizing fragments into one molecule. In this article, two novel multifunctional photostabilizers UVH‐1 and UVH‐2 containing UVA and HALS fragments were synthesized from a

The incompatibility between hydrophilic silica and hydrophobic rubber is an important problem on using silica in nonpolar rubber. In this study, hydroxyl telechelic natural rubber (HTNR) that contains hydroxyl‐terminated groups was introduced into silica‐reinforced natural rubber (NR) in order to improve the bonding strength between rubber and silica. The properties of silica‐reinforced NR compounds

In this work, a magnetic inhibitor (MI) was first prepared by using p‐hydroxybenzaldehyde anchored onto magnetic chitosan (MCS). Its inhibition effect to the free‐radical polymerization was studied. The MI with a size of less than 1 μM was characterized by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), and thermo gravimetric analysis (TGA). For potential application

The objective of this article was preparation of curable silane‐grafted poly(ethylene‐1‐butene) nanocomposite. The poly(ethylene‐1‐butene) was a polyolefin elastomer with random high comonomer content. Two preparation methods were investigated. The method of preparing nanocomposites significantly affected the mechanical properties of the resulted nanocomposites. So that, with the same formulation and

In this research, nanoclay used as filler in sugar palm‐reinforced composites was investigated by the physical, thermal, and dynamic mechanical properties. Various concentrations of nanoclay were used to fabricate composites by using hand lay‐up technique, followed by hot compression molding with naturally woven sugar palm fiber‐reinforced in polyester matrix. Among various weight concentrations such

Poly(vinyl chloride) (PVC) is occasionally discolored yellow or red by the formation of polyene chains in the polymer backbone. It has been noted that the formation of such polyene structures is caused by dehydrochlorination of the PVC, accelerated by tertiary amines. Thus, in the present study, we investigated the influence of amines on the formation of polyene structures in PVC, using resonance Raman

Some composites were prepared depending on ethylene vinyl acetate (EVA) copolymer with 18% VA content and titanium dioxide (TiO2). These composites were prepared in the ratios of 100/0, 90/10, 80/20, 70/30, and 60/40 by melt mixing method. Gamma radiation at differing doses was applied on pure EVA and composites to investigate the impact on modification of composites. Gel percentage and the Charlesby‐Pinner

The product‐based recycling of the electrical and electronic devices and their by‐products are limited due to their complex characteristics and dissimilar material characteristics. However, such recycling procedures give clear ideas about the composition and possible recycling options of the materials present in them. Consequently, the present study deals with isolation and recycling of the major polymeric

PVC compounds contain additives necessary for processing and stability, and to modify the plastic's properties. The Europe‐wide VinylPlus® voluntary commitment includes a challenge to make progress toward sustainable use of additives. Additive Sustainability Footprint (ASF) was developed to assess sustainable use of additives across the whole societal life cycles of finished PVC articles, taking a

The main aim of this study is to investigate the effect of silver‐doped zinc oxide (Ag‐ZnO) loading on the structural, morphological, thermal and electrical properties, and gas sensing behavior of polypyrrole (PPy)/phenothiazine (PTZ)‐blend nanocomposites. The composites are characterized by FTIR, XRD, SEM, TEM, DSC, TGA, and impedance studies. FTIR spectra exhibit the presence of Ag‐ZnO in the PPy/PTZ

The objective of this study is to investigate the effects of carbon nanotube (CNT) content, surface modification, and silane cross‐linking on mechanical and electrical properties of linear low‐density polyethylene/multiwall CNT nanocomposites. CNTs were functionalized by vinyltriethoxysilane to incorporate the ─O─C2H5 functional groups and were melt‐blended with polyethylene. Silane‐grafted polyethylene

In this article, the effect of alkaline peroxide bleaching treatment using hydrogen peroxide on mengkuang leaf fiber (MLF) to the tensile, thermal properties and water absorption of thermoplastic elastomer composites based on ethylene‐vinyl acetate/natural rubber and MLF was investigated. Fiber morphology and the fiber‐matrix interface were further characterized by scanning electron microscopy (SEM)

Slag is by‐product of iron‐making industry and is commonly used in concrete working; however, the application of such inorganic material as an additive in the polymer composites field is quite new and has not yet been really explored. The current investigation reports the potential of virgin slag, strong polar acid activated slag and organic treated slag as reinforcement, fire and thermal resistance

In this work, rosin‐based plasticizer was synthesized by Diels–Alder (DA) and esterification. First, the maleopimaric acid (RT) was obtained by DA between the double bond of rosin and maleic anhydride. Then, the carboxyl group and anhydride group of RT was esterified with tetrahydro geraniol to obtain the rosin‐based polyacid esters (RTT) under the catalysis of p‐toluene sulfonic acid. The structure

This study investigated the effect of styrene–butadiene‐rubber (SBR) latex/cement ratio as well as γ‐irradiation dose on physicomechanical properties of cement mortar. Specimens were prepared with a different SBR/cement mass ratio of 2.5, 5, 10, 15, and 20. Two curing methods were used: wet cure and dry cure. The best specimens were irradiated to doses of 10, 30, and 50 kGy. The compressive strength

Melamine salt of pentaerythritol phosphate/graphite (MPP‐G) mixture was prepared by dispersing graphite flakes in MPP during its synthesis. The chemical structure of MPP‐G was characterized by proton nuclear magnetic resonance, fourier‐transform infrared spectroscopy (FTIR), X‐ray diffraction (XRD), and scanning electron microscope. MPP‐G was blended with natural rubber (NR) at different loading levels

A kind of mesoporous aluminosilicate oxides (MAOs) were fabricated from industrial waste, coal fly ash. After loaded with zinc on MAO, the product MAO‐Zn was characterized by Fourier transform infrared spectroscopy, X‐ray diffraction, thermogravimetric analysis, and scanning electron microscopy (SEM). MAO‐Zn was incorporated with intumescent flame retardant (IFR) together and used in polypropylene

Surface functionalization of carbon nanotubes (CNTs) by biological adhesive polymers carbopol (CP) was developed by simply mixing CNT suspension and an aqueous solution of CP without any toxic solvents. CP can be easily coated onto CNTs through hydrogen bonds OCOH⋯NH2CO and electrostatic interaction between COO on CP and NH3+ on CNTs. After modification, the surface of the CNT is endowed with