Mitochondrial targeting drug delivery systems have made unprecedented progress in tumor treatment. Nevertheless, the stability of systemic circulation and the effectiveness of tumor accumulation are the basis for achieving tumor subcellular targeting. This study aims to overcome the biological barrier while improving the mitochondria-targeted effect of nanoparticles based on natural polysaccharides

Novel platinum–thiol catalytic system was constructed by the combination of platinum (Pt) catalysts (Karstedt's catalyst (KC) and chloroplatinic acid hexahydrate (CPA)) and thiol-containing compounds ((3-mercaptopropyl)trimethoxysilane (SM), (3-mercaptopropyl)triethoxysilane (SE), 1,6-hexanedithiol (HDT) and 1-octadecanethiol (OT)). It was found that Pt-thiol catalytic system could remarkably enhance

The current COVID-19 pandemic is stretching the global supply situation for face masks and PPE beyond production capacity. This is a call for the R&D community, particularly in the polymer degradation and stability arena, to engage and collaborate with virology and bio-medical experts. We require comparative R&D for extended, reuse and recyclability options, as well as large scale approaches and methods

Poly(dimethylsiloxane) (PDMS) based resins are materials used in large amounts on spacecrafts and satellites. When such materials are exposed to proton irradiation, especially in geostationary environment, they tend to crack and turn yellow, this being detrimental to their operational status. Here we present the elaboration and ageing of hybrid materials made of the embedding of non- or vinyl-functionalized

Smart electrocatalysts are synthesized from chitosan polymer and magnetic particles to enhance power by plant based sediment microbial fuel cell (P-SMFC). Cross-linked procedure is performed gelatinous microspheres as supporting metals (Cu, Pd, Mn, Pt, and Ni) and magnetic particles which create a porous structure on smart catalysts for increase ORR activity. A high and quick OCV rising is achieved

Due to the nanoscale and the same chemical structure to cellulosic fibers, it is difficult to directly observe the distribution of CNFs in paper sheets. Herein, dye-labeled CNFs were introduced to analyze the distribution of CNFs in paper handsheets. The dye was successfully loaded on CNFs through hydrogen bonding with an environmentally friendly method. Dye-labeled CNFs were mixed with four types

The aim of this study was to investigate the effects of ultrasound degradation on the physicochemical, rheological and antioxidant properties of Sargassum pallidum polysaccharides (SpPS). The results indicated that the ultrasound irradiation could significantly decrease the average molecule weight (MW), and particle size (Zavg) of native SpPS. The degradation pattern of SpPS was closely fitted to the

Combining the properties of natural protein and polysaccharide is a promising strategy to generate bioactive biomaterials with controlled structure. Here, a new method of preparing water‐insoluble silk fibroin/hyaluronic acid (SF/HA) scaffolds with tunable performances using an all-aqueous process is reported. Freezing-induced assembly was used to form silk I crystallization in the SF/HA blends. Silk

A highly efficient and sustainable strategy for the production of functional and thermostable cellulose nanocrystals (CNCs) was developed in this work. In which, the acid hydrolysis system composed with small doses of H2SO4 (5-10%) and large amounts of easily recoverable acetic acid (70-90%) was used to hydrolyze cellulose pulp at 80 °C for several hours. The rod-like CNCs were obtained with the length

Abstract The effect of post-processing annealing beyond the glass transition temperature on optical transparency was studied using poly(lactic acid) (PLA) films containing a nucleating agent such as N,N′-ethylenebis(stearamide) (EBS) or N,N′-ethylenebis(12-hydroxystearamide) (EBHS). Although the PLA films without the nucleating agent became opaque after exposure to annealing, the film with an appropriate

Abstract In the present work, we elaborated the CdS–TiO2 (CSTO) composite materials and considered their micro-structural and optical properties were investigated. The micro-structure and optical properties were examined by TEM, XRD, absorption and PL. The particles dimensions of composite have been varied from 18 to 22 nm while the typical crystalline size of TiO2 sample materials was varied involving

Abstract A mixed oxide of cobalt ferrite (CoFe2O4) was prepared by coprecipitation method in absence and presence of fulvic acid at pH 6 (F6) and 8 (F8), respectively. The as-prepared nano-materials were used as adsorbents for a textile dye (Remazole-Red, RR dye) from aqueous solution. The adsorption process was in good agreement of pseudo-second order kinetic model and Freundlich isotherm. The factors

Abstract The creation of multifunctional metal-based coordination complexes has been a hot topic in the fields of material science and biomedicine for their great potential application, metal–organic frameworks (MOFs) process the features of both coordination complexes and semiconductor materials might fit the requirements of the targeted materials. In this study, the assembly of the light-harvesting

Abstract ReO3 were prepared by thermal treatment of the macromolecular Chitosan·(ReCl3)X and PSP-4-PVP·(ReCl3)X precursors. The plasmon band in the visible region for the as obtained ReO3 from their visible spectra was observed at λmax of 640 nm. The nature of the polymeric precursor is acting as a solid state template and influences the size and morphology of the metal oxides. For the first time,

Abstract This research work reports on development and characterization of polyvinylidene fluoride (PVDF) thin films by intercalation of graphene during direct ink writing process with auxiliary electric potential (voltage). The effects of graphene additive on the crystallinity and β-phase transformation in PVDF thin films are studied. The results show that small amount of graphene additive in the

Abstract By employment of the flexible bis-(imidazole-4,5-dicarboxylate) ligand (H4L) ligand, a new luminescent Eu(III)-containing coordination polymer {[Eu(HL)(H2O)2]·2(H2O)}n has been successfully synthesized under hydrothermal condition by reaction of Eu(NO3)3·6H2O with H4L with the presence of NaOH as the pH modulator. The chemical composing of the as-prepared complex 1 has been determined via

Abstract The objective of this work is to prepare biodegradable hydrogel of wheat flour/acrylamide (F/AAm) using gamma radiation for the removal of Pb2+ and Hg2+ ions from waste solutions. Characterization of prepared (F/PAAm) hydrogel was carried out by FTIR, SEM, XRD and EDX. Factors affecting on the adsorption process such as pH of the medium, initial concentration, contact time and temperature

Abstract This study focused on the synthesis optimization and characterization of hybrid ion exchangers of graphene oxide/chitosan/zirconiumphosphate/silicate (GO/CS/ZrP/Si) nano-composite. Different characterization techniques as IR, XRD, TG–DTA, SEM, TEM, EDX and surface area have been employed to elucidate the structure of the prepared material. The characterization showed that GO/CS/ZrP/Si particles

Abstract Two newly synthesized ligands based on 1,3,4-thiadiazolethiosemicarbazone have been isolated by the condensation reaction of 2,3-disubstituted-5-acetyl-1,3,4-thiadiazole derivatives with thiosemicarbazide in acidic medium in addition to their Co(II) chelates. The synthesized cobalt chelates that have been obtained by the reaction of each ligand with cobalt acetate were confirmed to have the

Abstract Carbon nanofibers are synthesised via chemical vapour deposition of acetylene as carbon source through using water soluble catalysts. The new water soluble catalyst is prepared by supporting the copper on sodium chloride salt. Copper acetate and copper nitrate salts are used for preparing catalysts through impregnation method. The yield of carbon deposits using the catalyst prepared by copper

Abstract The silver chromite (Ag0.5Cr2.5O4) nanoparticles were prepared by one of the easiest wet chemical flash method. Thermal stability was appeared at high annealing temperature 900 °C. The crystallite and particle size was estimated, from X-ray diffraction peaks and from the field emission scanning electron microscopy, to be about 47.9 and 65.1 nm respectively. The composition of the investigated

Abstract Magnetic graphene oxide composite was studied for dispersive solid phase microextraction of fenoxaprop-p-ethyl herbicide (FPE) from different samples (water, soil and wheat) and determined by high performance liquid chromatography with ultraviolet detector. The composite was prepared and characterized using Scanning electron microscopy, Fourier transform infrared and X-ray diffraction spectroscopic

Abstract Asparagus-shaped CuO nanostructures were prepared by hydrothermal method using CuCl2·2H2O and NaOH as raw materials, using CTAB as surfactant. The effects of various factors such as the reaction temperature, the surfactant addition amount and the reactants concentration on the CuO crystal phase were studied by X-ray diffraction. The composition and morphology were characterized by Fourier

Abstract Due to the biocompatibility and eco-friendly properties of silver nanoparticles (AgNPs), their aqueous synthesis is gaining great attention. Herein, we report the biosynthesis of AgNPs using Ginkgo biloba (G. biloba) leaf aqueous extract without using toxic chemicals. The synthesis conditions have been investigated by the factorial design of experiments (FDE) by exploring reaction conditions

Abstract Using 3-chloropropyltriethoxysilane as an anchor, the functional monomer linear polyethylenimine(PEI) was grafted on the surface of mesoporous MCM-41. La3+ was selected as the template ion and epichlorohydrin was used as the crosslinker. A lanthanum ion MCM-41 imprinted polymer (La(III)-IIP-PEI/MCM-41) was prepared, and a non-ion-imprinted polymer (NIP-PEI/MCM-41) was arranged in the same

Abstract In this work, the degradation of 4-nitrophenol (4-NP) was investigated by using plasmonic gold nanoparticles decorated magnetic-porous silica microspheres (AuNP@Mag–SiO2) as catalyst in the presence of excess sodium borohydride (NaBH4) in batch fashion. Magnetic silica microspheres (Mag–SiO2), 6.20 µm in size synthesized with high surface area and good magnetic properties were functionalized

Abstract Polyamidoamine drug conjugates containing ferrocene and platinum analogues were prepared in this study. Fourier transform infrared spectra confirmed the successful isolation of the conjugates with signals at 3300 cm−1 for amide N–H stretch and for C=O stretch at 1655–1635 cm−1 resulting from the conjugation of 4-ferrocenylketobutanoic acid. The polyamidoamine drug conjugate particle size was

Abstract This study presents the response of twill glass fiber-epoxy laminates enhanced with different nanomaterials (0.5 wt%) subjected to high-velocity ice impact. The mechanical properties and ice impact performance of specimens were evaluated on different nanomaterials. The effect of the amine-functionalized carbon nanotubes (AFCNTs) on the ice impact behaviour was studied. To investigate the effect

Abstract In this study, the effects of micronized waste tire powder (WTP) and red pine wood waste flours (RPF) concentrations on the properties of pulverized-high density polyethylene (P-HDPE) composites were investigated. Ingredients were first mixed in a high-intensity mixer, later passed through single screw extruder to produce extrudates and finally pelletized and dried before sample manufacturing

Abstract Present study deals with the extraction and isolation of microcrystalline cellulose (MCC) from date palm fruit bunch stalk (DPFS) of date palm tree (Phoenix dactylifera L.) through integrated chemical method. To facilitate comparative study, each DPFS-treated, DPFS-pulp and DPFS-MCC samples were produced through respective bleaching, alkaline and acid hydrolysis treatments. The obtained samples

Abstract In this paper, different amounts of both devulcanized rubber (DR) and non-devulcanized rubber (NDR) were melt compounded and compression moulded with a brittle thermoplastic matrix such as polystyrene (PS). Scanning electron microscopy observations of the prepared blends showed that the PS/rubber interfacial adhesion, although rather limited, was improved in the case of DR, and that DR domains

Abstract A new high-swelling multi-component superabsorbent composite Na-CMC-g-P(AMPS-co-AA-co-AM)/NanoFe3O4 (SANCHs) was successfully designed and utilized for effective removal of 134Cs, 85Sr and 60Co radionuclides from radioactive wastewater. The structure and morphology of the superabsorbent composite have been mapped and characterized using different techniques (SEM, XRD, TEM, FTIR, and TGA).

Abstract Covalent organic frameworks (COFs) are an emerging class of photoactive materials, solely composed of light elements. Their ordered structure, crystallinity, and high porosity led to enormous worldwide attention in many research fields. The extensive π-electron conjugation, light-harvesting and charge transport characteristics make them a fascinating polymer for photocatalytic systems. Versatile

Abstract A series of novel quinolinyl imidazolidin-2-imine nickel complexes with different substituents on the imidazolidin-2-imine ligand were synthesized and characterized. The complexes in the presence of methylaluminoxane (MAO) as a cocatalyst catalyzed the copolymerization of norbornene (N) and styrene (S) or para-chlorostyrene (CS) with high activity (up to 1070 kg·mol−1·h−1). The installation

Abstract Nanofluids have gained more importance in the different process industries because of the enhanced wettability, thermal properties, and nature to form a specific self-assembly pattern. This study shows the wettability nature of three commercial surfaces by ZnO nanofluids with and without synthetic anionic sodium dodecyl sulfate (SDS) surfactant. The wettability nature of a particular solid

Magneto-rheological fluids (MRF) are known as a category of smart materials because they exhibit sudden viscosity changes upon application of magnetic field. In contrast to normal fluids, MRFs can sustain shear up to a yield stress. Stability and resistance against movement are important factors which determine the extent of application of a MRF. In this work, new MRFs are developed using engine oil

Herein, we present the results describing the synthesis and thermal, mechanical and surface properties of liquid polybutadiene rubber cross-linked with organosilicon reactants. The differences in the structure of cross-linking agents, as well as a number of reactive H-Si species, have a significant impact on the above-mentioned properties of synthesized via Rh(I) catalyzed additive cross-linking of

High transparent and biocompatible hydrogel dressing with bioactivity is attractive for clinical skin repair. Here we report a high optically transparent interpenetrating network (IPN) hydrogel that was fabricated by sericin and polyacrylamide. The hydrogels possess pH-dependent degradation as well as high porosity and porous structures with different sized diameters and distribution. Moreover, the

Due to the environmental pollution caused by the petroleum-based polymer, poly (lactic acid) (PLA), a biodegradable and biocompatible polymer that obtained from natural and renewable sources, has attracted widespread attention. However, the brittleness of PLA greatly limits its application. In this study, the super toughened PLA-based blends were obtained by compatibilizing the PLA/thermoplastic polyurethane

Hydrophobically associative polymers have been verified having enhanced oil recovery (EOR) potential. In this paper, a hydrophobically associative polyacrylamide functionalized with p‐sulfocalix[4]arene (denoted as SHPAM) was firstly prepared through redox free‐radical polymerization technique. Then, the water solubility, comprehensive properties, flowing behaviors, and displacement characteristics

For fiber‐reinforced plastics, the strain‐rate dependent response is governed by the matrix behavior. In this work, the Goldberg model is considered for the epoxy matrix constitutive material model. Moreover, the strain‐rate dependency is achieved by direct influence on the elastic modulus, the inelastic strain, and the material strain to failure. In addition, an anisotropic damage response is implemented

A reinforced double network (DN) hydrogel as a candidate for skin scaffold was prepared. It consists of O‐carboxymethyl chitosan, polyvinyl alcohol, honey, CaCl2, and graphene oxide. The various concentrations of CaCl2, namely, 30, 45, and 60 wt% were investigated. Besides, the GO content was studied as 3, 5, and 10 wt%. The structure of the DN was characterized by Fourier‐transform infrared spectroscopy

Regenerated cellulose (RC) bio‐nanocomposite fibers reinforced with halloysite nanotubes (HNT) were fabricated through wet spinning technique via ionic liquid as a green solvent. Mechanical properties, water uptake, thermal stability, and cytocompatibility of the obtained fibers were examined. FTIR spectra indicated the uniform dispersion of HNT in the cellulose network. XRD analysis, together with

The effect of functionalized styrene‐butadiene rubber (SBR) with glycidyl methacrylate (GMA) monomers, in the presence of styrene comonomers (SBR‐g‐GMA‐co‐St) as a compatibilizer on physical‐mechanical, morphological, and swelling behavior of SBR/nitrile butadiene rubber (NBR) blends were studied. It was proved that the compatibilizer made through dicumyl peroxide‐induced reaction which possessed 1

Morphological interpretations and their correlation with biphasic rheological networks and subsequent segmental relaxation, and electrical conductivity were comprehensively addressed for polyamide‐12/polypropylene‐multi‐walled carbon nanotubes (PA‐12/PP/MWNT) based ternary nanocomposites fabricated by melt mixing route. The partial migration of MWNT from PP to PA‐12 phase is evident from the spreading

A long alkyl chain quaternary phosphonium cationic surfactant is used to form stable bisphenol A diphenyl diphosphate (BDP) emulsion in water/acetone mixed solutions. BDP emulsion‐based montmorillonite (BMMT) is prepared by cation exchange between quaternary phosphonium on the surface of the emulsion and montmorillonite. Nanocomposites of BMMT and poly(styrene‐ethylene‐butylene‐styrene) (SEBS) thermoplastic