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Composition changes are performed on an invert emulsion stabilized by ethoxylated alkylamine surfactants by adding acetic acid solutions. The addition of acetic acid induces a phase inversion that evolves through the following stages: W/O emulsion, O/W/O dual emulsion, bicontinuous state (studded with lamellar phase), random-shaped O/W emulsion, and normal O/W emulsion. The addition of excess acetic...
A two-component gelator (B1⋯C12⋯B1) based on interaction between dendritic branch (Branch1 (COOH)) and diaminododecane is designed and synthesized, and its self-assembly behavior in methyl methacrylate (MMA) is firstly investigated. It is interesting to find that the gel formation depends on the concentration and sonication during cooling of the B1⋯C12⋯B1/MMA solution. Sonication plays as a switch...
Two dimensional (2D) nanostructured α-zirconium phosphate (ZrP) was studied for its effects on lubrication. Tribological characterization revealed that these nanoplatelets were effective as lubricant additives in both non-aqueous and aqueous media. Friction was reduced as much as by 65% and 91%, respectively in mineral oil and water when they were added. Two mechanisms of friction were proposed: viscosity...
A facile electrochemical approach has been developed for the synthesis of Palladium (Pd) nanoparticles decorated chemically reduced graphene oxide (CRGO) sheets on glassy carbon electrode (GCE) and indium tin oxide (ITO) electrodes by simple electrochemical deposition process. The electrochemical measurements and surface morphology of the as prepared nanocomposite electrode were studied using cyclic...
1DPCs, such as Bragg stack and distributed Bragg mirrors, are the simplest photonic crystal. TiO 2 /GO 1DPCs were fabricated by spin-coating technique. The photonic stopbands of the 1DPCs were measured by fiber optic spectrometer. The results demonstrated that the 1DPCs with different stopbands could be obtained from controlling spin-coating and incident angles. The prepared 1DPCs have double...
The paper industry in China is motivated to increase the high-yield pulp (HYP) content to a very high level (40–50%) from the traditional level (10–20%) for the functionality (e.g. bulk, opacity) and cost advantage of the HYP. In this paper, two coated paper samples were obtained from a modern Chinese paper mill that were produced in mill trials with HYP contents of 17% (normal level) and 40% (a very...
In this study, we prepared surface-smooth and porous poly(lactic-co-glycolic acid) (PLGA) microspheres with different diameters, different sizes of pores and different densities of pores using a simple oil/water emulsion method and varying the preparation conditions, including the molecular weight of PLGA, the components of the PLGA and the addition of porogen. The surface-smooth nonporous and porous...
This article considers the preparation and physicochemical characterization of poly(styrene-co-maleic acid) nanoparticles as colloidal carriers for the anticancer drug epirubicin. The nanoparticles were prepared by nanoprecipitation approach in a mixed (water/acetone) solvent system and the drug was loaded by sorption. It was found that the size of nanoparticles could be precisely controlled (from...
A facile nephelometry for measuring very low nanosphere concentrations was established by using a very common nephelometer in order to monitor the adsorption of polymer nanospheres from liquid phase onto cotton fiber surfaces. Monosized nanospheres of 40nm were prepared by cationic emulsion polymerization of styrene and methyl acrylate with a polymerizable emulsifier, methacryloxyethyl hexadecyl dimethylammoniumbromide...
Effect of 1-butyl-2,3-dimethylimidazolium chloride [bdmim][Cl], a trisubstituted ionic liquid on the critical micelle concentration (cmc) of sodium dodecylsulphate (SDS) in aqueous medium have been studied using conductometry from 298.15 to 318.15K and pyrene fluorescence probe analysis at 298.15K. Temperature and ionic liquid concentration dependent variation in cmc been discussed pertaining to the...
The monodisperse thermo-responsive composite microgels with well-defined core–shell structure based on gold nanorod as core and crosslinked poly(N-isopropylacrylamide) as shell were fabricated by seed-precipitation polymerization method using butenoic acid modified AuNRs as seeds. Their core–shell structure and thermo-responsive property were verified by electron transmission microscopy, atomic force...
Quercetin (QC) was reacted with glycerol diglycidyl ether (GDE) to obtain poly(quercetin) particles (p(QC)) for the first time via a simple microemulsion polymerization/crosslinking method using l-α lecithin as surfactant and cyclohexane as organic phase. The prepared p(QC) particles were highly negatively charged (−48.2mV), were thermally more stable in comparison to QC and degradable in PBS at pH...
The kinetics of alkaline hydrolysis of tris(2,2′-bipyridine)iron(II) complex have been studied in the presence of various alcohols of different chain lengths and number of OH groups in aqueous and SDS micellar medium. In aqueous medium, rate increases at all percentages of 1-alkanols in the following order: PrOH>EtOH>MeOH>H 2 O, whereas the effectiveness of glycols as inhibitors is...
BiOI/BiOBr films were successfully prepared via a facile solvothermal method. The as-prepared films were characterized by XRD, SEM, TEM, N 2 -sorption, PL and UV–vis DRS spectra. The photocatalytic activity of the BiOI/BiOBr films was evaluated by the decomposition of methyl orange (MO) under visible light irradiation. Compared with pure BiOBr film, BiOI/BiOBr films exhibited significantly...
A series of titanate nanomaterials (TNMs) were synthesized via hydrothermal reaction under different NaOH concentrations (4–15mol/L), and then used to remove Cu(II) and Cd(II) from aqueous solution. Transmission electron microscope (TEM) revealed that the morphology of the TNMs successively presented as nano-granules, nanoplates, nanotubes, nanosheets and nano-blocks with increasing NaOH concentration...
Magnetic molecularly imprinted mesoporous silica gel was prepared via sol–gel processing method through metal coordinate interaction, and it was applied to the recognition of enrofloxacin (ENRO). The structure and magnetic properties of the gel were systematically investigated by means of FTIR, TEM, and SQUID magnetometry, respectively. The binding characteristics were studied by performing both the...
Random copolymers of perfluoroalkyl ethyl methacrylate (Zonyl-TM), methyl methacrylate (MMA) and butyl acrylate (BA) monomers were synthesized by free radical copolymerization in toluene/methyl ethyl ketone solvent mixture. Batch polymerizations have been performed using different monomer feed compositions with high conversions. Molecular weights of the copolymers were determined by GPC and intrinsic...
Previously, we studied the latex particle coagulation in the emulsion polymerization of n-butyl acrylate induced by an electrolyte (Colloid Polym Sci 291 (2013) 2385–2398). However, the evolution of particle size distribution vs. monomer conversion and reaction time, and the possibility for the manipulation of particle coagulation to control particle size and polydispersity were not studied. In this...
In our previous study, nanostructures of silver with two anisotropic geometries of nano-wires and nano-ribbons were synthesized on the fabric surfaces via an in-situ process. In this research, the effect of cross-linkable polysiloxane (termed XPs) coating on the various properties of fabrics with these two geometries, prepared by the previous technique, has been investigated. The effects of this treatment...
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