In this work, the effect of chloride ions on copper corrosion behavior in an acidic sulfate solution, in the presence of binary inhibitor system of azoles and potassium sorbate was studied. Electrochemical measurements, weight loss measurements and surface analysis (SEM/EDS) were used in this in...
During the treatment of surface water to drinking water, ozonation is often used for disinfection and to remove organic trace substances, whereby oxidation by-products can be formed. Here we use the example of tolyltriazole to describe an approach for identifying relevant oxidation by-products i...
The synergistic inhibition effect of the 5-methyl-1H-benzotriazole (MBTAH)/1H-benzotriazole (BTAH) with potassium sorbate and gelatin on the copper corrosion in an acidic sulphate solution was investigated by electrochemical methods and weight loss measurements. According to the obtained results...
Cotton fabrics initially dyed with reactive dyes were treated with dimethylol dihydroxy ethylene urea (DMDHEU) resin in order to improve the crease recovery properties. As a comparison, the treatment with DMDHEU was carried out by the conventional thermal curing and gamma irradiation. The effect...
A series of aqueous polyurethane–urea (PUU) dispersions having urushiol were synthesized by in situ step polymerization of isophorone diisocyanate (IPDI), poly(ethylene glycol) (PEG, M n =1000g/mol), urushiol, dimethylol propionic acid (DMPA), and ethylene diamine (EDA). Urushiol was ex...
Waterborne polyurethane‐ureas (pristine WBPUs: WBPU‐19 and WBPU‐24, fixed soft segment content: 60 wt %) containing dimethylol propionic acid (DMPA)/ethylene diamine (EDA) contents (19/16.8 and 24/11.4 mol %) were prepared. The polyaniline (PANI)‐graft‐WBPU (PANI‐graft‐WBPU) films were pr...
A novel series of 1,4-bis(6-(substituted phenyl)-[1,2,4]-triazolo[3,4-b]-1,3,4-thiadiazoles (5a–b) and 4-bis(substituted phenyl)-4-thiazolidinone derivatives (7a–c) have been synthesized from terephthalic dihydrazide (1) through multistep reaction sequence. 1,4-Bis(5-aryl-1,3,4-oxadiazole-2yl)...
Recycling of waste PET bottles was attempted using aminolytic depolymerization with hydrazine monohydrate in the presence of NiCl2 and MgCl2 as catalysts, under reflux. The reaction was carried out in a domestic microwave oven of 700 W with suitable modification. Terephthalic dihydrazide (TPDH) ...
A series of novel Schiff base containing bis-1,2,4-triazole and bis-hydrazone derived from terephthalic dihydrazide was synthesized. All the newly synthesized compounds were characterized by 1H, 13C NMR, mass spectra, FTIR and elemental analysis. UV–vis spectra and fluorescent spectra of the co...
The substitution reactions of XC 6 H 4 COCl (X=2-F, 3-F, 4-F, or 4-(CH 3 ) 3 C) and YC 6 H 4 COONa (Y=2-F, 3-F, 4-F, or H) in a two-phase H 2 O/CH 2 Cl 2 medium using pyridine 1-oxide (PNO) as an inverse phase transfer catal...
Tetraureido‐dihomooxacalix[4]arenes (tert‐butyl 4a and phenyl 4b) were synthesised and obtained in a partial cone conformation in solution and in the solid state, as confirmed by NMR and X‐ray diffraction studies. Their complexation ability towards halides, pseudo‐halides and oxoanions was a...
Fluorescence depolarization and quenching measurements of N‐vinyl carbazole/vinyl tert‐butyl‐benzoate copolymers in dilute solution of several fluid solvents and in a rigid poly(methyl methacrylate) matrix were performed to study the effect of copolymer composition on the intramolecular energ...
The kinetics of ring‐opening polymerization of D,L‐lactide with 2‐ethylhexanoic acid zinc (II) salt as catalyst and methanol as co‐catalyst at different temperatures is investigated. A previously proposed kinetic model accounting for reactions such as activation, propagation, chain transfer,...
The coating of transparent ZnO films using zinc 2-ethylhexanoate [Zn(OOCH(C2H5)C4H9)2] as a novel metal organic monomer is reported. Zinc 2-ethylhexanoate is liquid at room temperature and can be spin-coated on a flat substrate without precipitation of ZnO under ambient condition. The spin-coate...
A zone model describing the microstructures of zinc oxide films deposited by combustion chemical vapor deposition as a function of temperature and precursor concentration was developed experimentally. Homologous temperatures from 0.2 to 0.5, and precursor concentrations from 0.0025 to 0.04 M wer...
ZnS:Mn 2+ nano-phosphors are synthesized via a microwave irradiation technique using zinc 2-ethylhexanoate as a novel zinc precursor. The developed process produces ZnS:Mn 2+ nano-particles having in situ capping of 2-ethylhexanoic acid on the surface, resulting in high luminesce...
Calcium and phosphate ion-releasing resin composites are promising for remineralization. However, there has been no report on incorporating antibacterial agents to these composites. The objective of this study was to develop antibacterial and mechanically strong nanocomposites incorporating a qu...
Topical anesthesia is important for electronic flexible laryngoscopy (EFL) utilization. We hypothesized that oral dyclonine hydrochloride mucilage (ODHM) is superior to tetracaine spray (TS) in patients undergoing EFL examination.This study included 932 patients randomized into either an ODHM or...
The osmotic coefficient measurements have been carried out for ternary aqueous solutions containing a fixed concentration of α-cyclodextrin (α-CD) of ∼0.1mol·kg−1 and varying the concentrations (∼0.012 to ∼0.21mol·kg−1) of drugs Procaine hydrochloride (PC·HCl), Lidocaine hydrochloride (L...
Computational study has been done electronically and geometrically to select the most suitable ionophore to design a novel sensitive and selective electrochemical sensor for phenazopyridine hydrochloride (PAP). This study has revealed that sodium tetraphenylbarate (NaTPB) fits better with PAP th...
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