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Summary form only given. Nano-structure of a new Pb(II) two-dimensional coordination polymer, [Pb(2pyc)(N3)(H2O)]n (1), 2-Hpyc =2-pyridinecarboxylic acid} were synthesized by a sonochemical method. The new nano-structures were characterized by scanning electron microscopy, X-ray powder diffraction, IR spectroscopy and elemental analyses. Compound 1 was structurally characterized by single-crystal...
Struvite (MgNH4PO4·6H2O, magnesium ammonium phosphate hexahydrate) is one of the urinary tract stones seen in humans and animals. Moreover, this phase is frequently encountered in the waste water treatment and purification plants. Struvite powders were easily synthesized, without any pH control precautions, in this study and the powders heated in an air atmosphere were observed to lose their crystal...
A facile micelle template-hydrothermal method was used to synthesize hydroxyapatite nanorods with good thermal stability and biocompatibility. A novel micelle precursor consisting of CTAB/cyclohexane/ethanol/aqueous phase was hydrothermally treated at 150??C. XRD patterns and FTIR spectra showed that the synthesized products display the structure and main vibration modes of hydroxyapatite (HA). TEM...
An extremely effective and practical approach to improving the thermal stability of charge and thus piezoelectricity of cellular polypropylene ferroelectrets is proposed and its effectiveness is experimentally validated in this report. The approach is fluorination and subsequent isothermal crystallization treatment. Astonishing charge stability is discovered by the measurements of open-circuit TSD...
A new vanadium-glycine complex (NH4V(Gly)3(PO4)2ldrH2O) was synthesized in hydrothermal condition and characterized by XRD, FTIR, SEM and TG-DSC techniques. The results indicate that glycine and water exist in the crystal framework as ligand coordinating with vanadium. The SEM images show that the single crystals are homogeneous in crystal size and shape, and show a good crystalline performance. The...
Brush-like chitosan-g-poly(D,L-lactide) copolymers were synthesized effectively by bulk ring-opening polymerization of D,L-lactide(D,L-LA) using chitosan (CS) as macroinitiator under microwave irradiation. The graft copolymers were characterized by FT IR, 1H NMR, EA, XRD, and TGA. The results showed that the synthesis of the chitosan-g-polylactide copolymer via microwave heating was much faster than...
Depending on the fact that most pillared clays show poor thermal stability, the study on the synthesis of novel Si-pillared montmorillonites (Si-MMT) with high thermal stability have been carried out. Furthermore, powder X-ray diffraction (XRD), Fourier transformation infra-red spectra (FTIR), nitrogen adsorption-desorption isotherms were applied in order to study the thermal stability and mechanisms...
A new type of unsaturated poly (ester-imide) Viz Phthalic anhydride-ethylene glycol-diethylene glycol - maleic anhydride -urea was prepared by meltpolycondensation. The copolymer was characterized by FT-IR, gel permeation chromatography (GPC) and thermal gravimetric analysis (TGA). Viscosity of the unsaturated poly (ester-imide) was measured with a Ubbelohde viscometer. The molecular structure of...
An intercalation nonlinear-optical (NLO) polyimide was synthesized by the ring-opening polyaddition of 4,4'-(Hexafluoroisopropylidene) diphthalic Anhydride (6FDA) and [(6-nitrobenzothiazol-2- yl)diazenyl]phenyl-1,3-diamine. Then, sol-gel technique was adopted, utilizing 3- aminopropyltriethoxysi- lane (APTES) and tetraethoxysilane (TEOS). The polyimide/silica hybrid material was obtained. The polyimide...
A series of the polyimide-silica NLO nanohybrid materials were synthesized from 3,3', 4,4'- Bisphenyltetracarboxylic (BPDA), 2,2-Bis(3-amino-4-hydroxyphen-yl) hexafluoropropane (6FHP), nonlinear optical (NLO) molecule 4-(N-2-Hydroxyethyl-N-methylamino)-4'-[(6-nitroben-zothiazol-2-yl)-diazenyl] azobenzene (HNBDA), coupling agent APTES and hydrolysate of TEOS via sol-gel process. The TEOS contents in...
Effects of liquid surrounding on production, initial size, colloidal stability and optical properties of zinc and zinc oxide nanoparticles, synthesized by pulsed laser ablation method in different liquid environments are studied. In this work, Zn and ZnO nanoparticles were produced by 532 nm harmonic of a Nd:YAG laser ablation of a pure zinc metal target in different aqueous solutions of deionized...
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