Synthesis, recognition and evaluation of molecularly imprinted polymer nanoparticle using miniemulsion polymerization for controlled release and analysis of risperidone in human plasma samples

Majid Abdouss,Ebadullah Asadi,Saman Azodi-Deilami,Davood Kordestani,Alireza Rahimi,Somayeh Asadi 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.6

We prepared high selective imprinted nanoparticle polymers by a miniemulsion polymerization technique,using risperidone as the template, MAA as the functional monomers, and TRIM as the cross-linker in acetonitrileas solvent. The morphology of the nanoparticles determined by scanning electron microscopy (SEM) images and drugrelease, binding properties and dynamic light scattering (DLS) of molecularly imprinted polymers (MIPs) were studied. Controlled release of risperidone from nanoparticles was investigated through in 1% wt sodium dodecyl sulfate aqueoussolution and by measuring the absorbance by HPLC-UV. The results showed that the imprinted nanoparticles exhibiteda higher binding level and slower release rate than non-imprinted nanoparticles, which contributed to interaction ofrisperidone with imprinted cavities within nanoparticles. Furthermore, the results from HPLC showed good precision(5% for 50.0 g L-1) and recoveries (between 86-91) using MIP from human plasma samples.

Synthesis and characterization of magnetic molecularly imprinted polymer nanoparticles for controlled release of letrozole

Majid Abdouss,Ali Asghar Sarabi,Saeedeh Kazemi 한국화학공학회 2016 Korean Journal of Chemical Engineering Vol.33 No.11

Synthesis and characterization of magnetic letrozole imprinted polymer nanoparticles is described herein for the first time. Magnetic molecularly imprinted polymers (MMIPs) were synthesized by precipitation polymerization using methacrylic acid (MAA) as functional monomer and trimethylolpropane trimethacrylate (TRIM) as crosslinker in the presence of letrozole as template and MAA-modified magnetite nanoparticles as magnetic component. The nanoparticles were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and a vibrating sample magnetometer (VSM). The synthesized MMIP nanoparticles, with particle size of about 100 nm, showed superparamagnetic features with a saturation magnetization of 12.5 emu·g−1 and had thermal stability below 240 oC. The adsorption experiments indicated better template recognition of MMIP than magnetic nonimprinted polymer (MNIP) nanoparticles. Moreover, the release profile of letrozole from MMIP and MNIP revealed the controlled release ability of MMIP nanoparticles for the letrozole anticancer drug. We also found that applying an external alternative magnetic field results in increasing the rate of the drug release.

Enhancement corrosion resistance of mild steel in 15% HCl solution by a novel bio-based polyurethane for oil well acidizing

Alireza Rahimi,Majid Abdouss,Abdolreza Farhadian,Lei Guo,Savas Kaya,Jaber Neshati 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.113 No.-

A novel thermally stable inhibitor was developed based on citric acid and glucose (CAGCI) to inhibit thecorrosion of mild steel (MS) in simulated acidic oilfield water for oil well acidizing. All electrochemicalmeasurements were performed in a temperature range of 293–363 K to evaluate the inhibition powerof CAGCI. The results of electrochemical tests clearly revealed that CAGCI effectively inhibited MS corrosionvia a mixed-type mechanism and 77 104 M of the inhibitor provided the highest inhibition efficiencyof 90%, 93.6%, 93.7%, and 89.9% at 293 K, 313 K, 333 K, and 363 K, respectively. In addition, CAGCIprovided a total polarization resistance of 416.7 O cm2 for MS at 293 K and decreased the corrosion rate ofthe metal 7.6 times compared to blank at 363 K. Moreover, the UV–visible results demonstrated the formationof the Fe2+-CAGCI complex and the results of the surface analysis confirmed the presence of a protectivefilm of CAGCI molecules on the MS surface. Finally, the experimental outcomes were wellcomplemented by results obtained from density-functional study and molecular dynamics (MD) simulation. According to quantum calculations, citric acid and aromatic rings in the structure of CAGCI playedthe main role in electron exchanges with the MS surface. The results of the MD simulation were also confirmedthat a hydrophobic barrier can be formed by CAGCI molecules on the MS surface with a paralleladsorption configuration.

Fabrication of nanoporous graphene by chemical vapor deposition (CVD) and its application in oil spill removal as a recyclable nanosorbent

Sanaz Pourmand,Majid Abdouss,Alimorad Rashidi 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.22 No.-

In this research, nanoporous graphene which is used as nanosorbent was synthesized by CVD method and the product was characterized by SEM, TEM, BET, TGA, XRD. FT-IR and Raman spectroscopy. The sorption of two samples of crude oil and also hydrocarbons which cause severe environmental pollution especially in water, on to nanoporous graphene was studied. Due to the high pore volume (1.17 cm3/g), large specific surface area (410m2/g) and small pore size, high sorption capacitywas achieved. Maximum sorption capacity of this nanoporous graphene for two samples of crude oil (A) and (B) was 102.17 and 105.39 g crude oil/g nanosorbent, respectively. The maximum sorption capacity of this nanosorbent for hydrocarbons was obtained at 155.46 g hydrocarbon per gram nanosorbent. Crude oils and hydrocarbons sorbed into nanoporous graphene could be recovered by three methods of heat treatment, extraction with solvent and filtration under mild suction with the proper recovery ratio. The recovery capacity by three methods was obtained, 99.01, 98.50, 98.05%, respectively. By means of these recycling methods, crude oil can be separated from nanosorbent and reused after the recovery. According to proper performance and good shaping ability of this nanosorbent, it can be used as a good candidate in the removal of oil spills.

Synthesis and characterization of physicochemical properties of hydrophilic imidazolium-based ionic liquids

Maryam Yousefi,Majid Abdouss,Ali Akbar Miran Beigi,Ali Naseri 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.9

A series of ionic liquids based on Octyl and Decyl methylimidazolium with different anions such as chloride, glycinate, dihydrogen phosphate and trihydrogen diphosphate, were synthesized and characterized by 1HNMR and elemental analysis. IL containing trihydrogen diphosphate anion, was synthesized for the first time. Physicochemical properties, including density, viscosity, surface tension, refractive index, and pH, were measured in temperature range 283.15 to 363.15 K and atmospheric pressure. The effects of temperature, alkyl chain, and anion type on physicochemical properties were investigated. The results revealed that the physicochemical properties decreased as a function of temperature. Unlike viscosity, other properties, such as density, surface tension, refractive index and pH values, decreased, while alkyl chain length increased. Understanding ILs properties and determining their unique abilities helps researchers to use them in new applications. These long alkyl chain ILs, are being used as surfactants to reduce Oil/Water interfacial tension in EOR process.

Synthesis, pore structure and properties of polyurethane/silica hybrid aerogels dried at ambient pressure

Zahra Talebi Mazraeh-shahi,Ahmad Mousavi Shoushtari,Ahmad Reza Bahramian,Majid Abdouss 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1

Polyurethane/silica hybrid aerogels were synthesized at ambient pressure drying conditions with thespecific surface area, pore volume and pore diameter in the range of 530–850 m2/g, 0.71–2.83 cm3/g, and5–13 nm, respectively. TGA results showed that almost all polyurethane chains preserved as a part of gelnetwork. The pore structure and properties of these hybrid aerogels showed an interesting dependenceon the polyurethane content. The improved structure and properties compared to native silica aerogelwas achieved with introducing 3 v/v% aqueous polyurethane dispersion into silica sol. Highpolyurethane content led to low porosity (61%) and small surface area (535 m2/g).

Eco-friendly inorganic-organic bionanocomposite (Copper oxide - Carboxyl methyl cellulose - Guar gum): Preparation and effective removal of dye from aqueous solution

Ali Hosseinian Naeini,Mohammadreza Kalaee,Omid Moradi,Ramin Khajavi,Majid Abdouss 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.8

Biopolymers, such as Carboxyl methylcellulose (CMC) and Guar gum (GG), have attracted much attention. Herein, binary organic composite (Carboxyl methyl cellulose - Guar gum) and ternary inorganic-organic ecofriendlybionanocomposite (Copper oxide - Carboxyl methyl cellulose - Guar gum) with different wt% of CuO (1%,3%, and 5% denoted as CMC/GG/CuO-1, CMC/GG/CuO-3, and CMC/GG/CuO-5) were prepared. The CMC, GG,CuO, CMC/GG, CMC/GG/CuO-1, CMC/GG/CuO-3, and CMC/GG/CuO-5 were characterized by XRD, FTIR, SEM,and EDX and used to remove malachite green (MG) dye from water. The effect of operational parameters on theadsorption process was investigated in detail. The maximum dye capacity was 18.5mg/g. The isotherm data showedthe Freundlich isotherm, which indicated the non-uniformity of adsorption on the adsorbent surface. Pollutant removalfollowed the pseudo-second-order kinetics. Also, the thermodynamic study presented that adsorption was spontaneousand endothermic.