A magnetic solid phase extraction (MSPE) method coupled with high-performance liquid chromatography (HPLC) was proposed for the determination of five sulfonylurea herbicides (bensulfuron-methyl, prosulfuron, pyrazosulfuron-ethyl, chlorimuron-ethyl and triflusulfuron-methyl) in environmental wate...

The effects of dioctadecyl dimethyl ammonium chloride (DODAC) on the rheological properties of ternary systems consisting of behenyl trimethyl ammonium chloride (C22TAC), 1-hexadecanol (C16OH), and water are studied to improve the long-term stability and to establish the preparation method of co...

Montmorillonite (Mt) and illite (Ilt) were ground for different times under wet condition and sequentially subjected to organic modification by dioctadecyl dimethyl ammonium chloride (DDAC). The influence of the grinding time on the obtained products in terms of DDAC loading and ClO4− adsorption...

A novel method is reported for surfactant modification of montmorillonite (Mt), and then the performance of the surfactant-modified Mt was investigated for the removal of perchlorate (ClO4−). Mt was first modified with dimethyl dioctadecyl ammonium chloride (DDAC) under microwave irradiation, wh...

Temperature sensitive polymer hydrogels are being extensively studied because of their potential applications in biomedical, robotics, and chemical industry. However, major hurdles in their development have been their slow response, low efficiency, and poor mechanical properties. One of the main...

With the aim to improve the understanding of morphology and efficiency properties, we investigate in this series the impact of the complex formation constant of the hydrophobic monomer with respect to statistically methylated-β-cyclodextrin (Me-β-CD) on the electrochromatographic properties of...

Sodium alginate grafted by a thermo-responsive copolymer of N-isopropylacrylamide, enriched with the hydrophobic N-tert-butylacrylamide monomer, (P(NIPAM-co-NtBAM)-NH2) was synthesized and its thermo- and shear-induced responsive capabilities were studied through rheology. The graft copolymer fo...

1.1. A study was made of the decomposition of cumyl hydroperoxide in n-decane at 90° in the presence of zinc dii-isopropyl dithiophosphate, phosphorus pentasulphide, bis-(di-isopropylthion phosphoryl)-disulphide, di-isopropyldi-thiophosphoric acid, di-isobutylphosphoric acid, sulphuric and phos...

The species adsorbed on Cu sulfide ore minerals from alkaline or near neutral solutions of blends of the flotation collectors dibutyl dithiophosphate (BDTP) and 2-mercaptobenzothiazole (MBT) have been established by X-ray photoelectron spectroscopy. Adsorption on air-exposed Cu metal, cuprite, c...

The reaction between nickel(II) nitrate and potassium phosphorus-1,1-dithiolates (di-sec-butyl and di-iso-butyl) in methanol yields 2:1 complexes which were characterized by FT-IR and NMR spectroscopy. 2:1 pyrazole adducts of both compounds were also obtained.The X-ray diffraction analysis of th...

Crystalline bis(O,O′-di-sec-butyldithiophosphato)platinum(II) was prepared and studied by means of 13C, 31P CP/MAS NMR spectroscopy and single-crystal X-ray diffraction. The unit cell of the platinum(II) compound is comprised of one centrosymmetric mononuclear molecule [Pt{S2P(O-sec-C4H9)2}2], ...

Crosslinked polyimide–poly(dimethylsiloxane)s with theoretical content of the siloxane phase up to 60 wt% were prepared. The starting materials were p-aminophenyltrimethoxysilane terminated polyamic acids with number average molecular weight of 10,000 g mol−1, based on 4,4′-oxydiphthalic anhyd...

Films composed of poly(vinyl chloride)/poly(ɛ-caprolactone)/poly(ɛ-caprolactone)-b-poly(dimethylsiloxane) [PVC/PCL/(PCL-b-PDMS)] blends were prepared by solvent casting from tetrahydrofuran. The PVC content was kept constant (60 wt %) while varying the PCL and PCL-b-PDMS contents, part of the PC...

A novel polymer brush consisting of poly(phenylacetylene) (PPA) main chain and poly(dimethylsiloxane) (PDMS) side chains was synthesized by the polymerization of phenylacetylene-terminated PDMS macromonomer (M-PDMS). The macromonomer was prepared by the esterfication of monohydroxy-ended PDMS (P...

In order to improve the permselectivity of poly(dimethylsiloxane) (PDMS) membrane without much reduction in permeability value, a new type of poly(dimethylsiloxane) membranes containing different concentrations of non-ionic and cationic amino-hydroxy functionalities has been prepared. IR, 1H NMR...

The gas permeation properties of a new poly (dimethylsiloxane) (PDMS) membrane containing different concentrations of amino-hydroxy functionalized poly (dimethylsiloxane) have been measured for structure-property relationship. The corresponding cationic membranes were prepared by treating the am...

The capability to detect nitro-based explosives from their vapor is often limited by their low vapor pressure. One approach for overcoming this limitation is to use a solid-state pre-concentrator. The sorption and desorption of nitroaromatic vapors by poly(dimethylsiloxane)-based (PDMS) films fa...

This study presents synthesis of novel block copolymers of thienyl end capped polydimethylsiloxane and polypyrrole via chemical oxidative polymerization by iron (III) chloride. Mono hydroxy terminated poly (dimethylsiloxane) (MH.PDMS) was reacted with 2-thiophenecarbonyl chloride (ThCCl) in orde...

The phase behavior of PDMS(OH)–CO2 binary mixtures was investigated. Two different molecular weight PDMS(OH) were utilized and the demixing pressures were determined at three temperatures for a wide composition range. Both of these polymers were found to form miscible mixtures with CO2 at all c...

With an aim to prepare phase change material (PCM) as self-sustaining film from poly(ethylene glycol) (PEG) having reduced hydrophilicity, cross-linking of PEG and hydroxy-terminated poly(dimethyl siloxane) (HTPDMS) was done by using tetraethyl orthosilicate (TEOS) as a cross-linking agent. Foll...