Inclusion compounds of some 4-substituted benzoic acid and benzaldehyde drugs with beta-cyclodextrin were prepared and characterized by IR spectroscopy, powder X-ray diffraction, thermogravimetry, and 1H-NMR spectroscopy. The thermal stability and chemical stability of these drugs were strikingly improved after inclusion. The effect of inclusion on the chemical-shifts of protons H-3 and H-5 in ...

The synthesis characterization and conductivities of polyaniline/expanded vermiculite intercalated nanocomposite are presented in this paper. The conductive emeraldine salt form of polyaniline is inserted into the interlayer of expanded vermiculite to produce the nanocomposite with high conductivity. The structures and properties are characterized by transmission electron microscopy x-ray diffr...

Solid-state Ln-L compounds, where Ln stands for heavy trivalent lanthanides (Tb-Lu) and L is malonate, have been synthesized. Simultaneous thermogravimetry and differential thermal analysis (TG-DTA), differential scanning calorimetry (DSC), X-ray powder diffractometry, infrared spectroscopy, TG-FTIR system, elemental analysis and complexometry were used to characterize and to study the thermal ...

Poly(hexafluoropropylene-co-tetrafluoroethylene) (FEP) was successfully radiationgrafted with vinylbenzyl chloride (VBC). Subsequently amination with trimethylamine followed by ion exchange with aqueous hydroxide yielded alkaline anion-exchange membranes (AAEMs). Experimental parameters were established for maximising the degree of grafting (d.o.g.); the optimum treatment duration for maximum a...

Hydrothermal reaction of Cd(NO3)2 · 4H2O with a flexible asymmetrical bridging ligand, 4-(2pyrazinylthiomethyl)benzoic acid (Hpztmb), at 120 ◦C yielded a novel one-dimensional Cd(II) coordination polymer [Cd(pztmb)2(H2O)2]n (1), which has been characterized by IR spectroscopy, elemental analysis, thermogravimetry, and X-ray crystallography. The metal-organic chain of the complex is held togethe...

Very recently, the hydroxyl-functionalized ionic liquids have gained immense interest and were developed for a number of interesting applications. In this work first time new namely; 1-(hydroxyethyl)-3-methylimidazolium dihydrogenophosphate liquid [EtOHMIM+][H2PO4?] was synthesized in our laboratory. The synthesis is based on an alkylation reaction 1-methylimidazole followed by anion exchange. ...

In this paper, the synthesis and characterization of thermal properties of porous copolymers 1-vinyl-2-pyrrolidone with trimethylolpropane trimethacrylate are presented. They were obtained by suspension polymerization as a pure polymers or composite materials with different inorganic fillers. The influence of the type of filler on the textural and thermal properties was investigated in details....

In this study, complexes composed of poly-l-tyrosine (pLT) and single-walled carbon nanotubes (SWCNTs) were produced and the dispersibility of the pLT/SWCNT complexes in water by measuring the ζ potential of the complexes and the turbidity of the solution were investigated. It is found that the absolute value of the ζ potential of the pLT/SWCNT complexes is as high as that of SWCNTs modified wi...

The polyamine (PA) was prepared by condensation of 1, 4-bischloromethyl benzene and 1, 4benzene diamine. The PA was then treated with cyanuric chloride at 0oC followed by reaction with sulfanilic acid in THF in concentrated NaOH (pH 9-10) at room temperature for 8 hrs. The resultant polymer designated as polyamine-s-triazine-sulfanilic acid (PATS) was characterized by elemental analysis, IR spe...

BACKGROUND The thermal stability of iron oxide nanowires, which were obtained with a hard template method and are promising elements of Li-ion based batteries, has been investigated by means of thermogravimetry, infrared and photoemission spectroscopy measurements. RESULTS The chemical state of the nanowires is typical of the Fe2O3 phase and the stoichiometry changes towards a Fe3O4 phase by ...