Abstaract Nanocrystalline hydroxyapatite was precipitated from calcium hydroxide and phosphoric acid. Effects of precipitation temperature and different calcium to phosphate ratios (Ca/P) on the obtained powders were investigated. Characterization of the powders was performed using XRD and FTIR spectra, scanning electron microscopy, and transmission electron microscopy. Increase in precipitatio...

Single-walled carbon nanotubes (SWNTs) were determined to have significant interaction with poly(3-hexylthiophene) (P3HT), which is helpful to form continuous active film with interpenetrating structure and improve the crystallinity of the resultant film for SWNTs/P3HT composite. Photovoltaic devices based on an active film with relatively higher crystallinity display much enhanced performance....

We are focusing on the developed by us the mathematical analysis methods of the data obtained by three independent spectroscopic techniques and their application to study of atomic and chemical composition profiles across the air-exposed systems SrTiOx/B/Si with interfacial layers (B: SiO2, Si3N4 and HfO2) grown by the atomic layer deposition technique. It was established that the material of t...

Related Articles Thermal annealing effect on material characterizations of β-Ga2O3 epilayer grown by metal organic chemical vapor deposition Appl. Phys. Lett. 102, 011119 (2013) Crystallinity of inorganic films grown by atomic layer deposition: Overview and general trends J. Appl. Phys. 113, 021301 (2013) Crystallinity of inorganic films grown by atomic layer deposition: Overview and general tr...

An account is presented on investigation of the effects of synthesis parameters, i.e., reaction sources, silica to alumina ratio, acid molar ratio and crystallization conditions on the crystallinity, morphology and particle size of SAPO-34. The synthesis conditions were designed to produce small particles with narrow size range. The prepared samples were characterized by XRD and SE...

In the present work, magnetic zeolitehave been synthesized by insitu method using combination of iron oxide nanoparticlesFe3O4 and clinoptilolite. Fe3O4nanoparticleshave been synthesized electrochemically and then clinoptilolitewas added to solution. The Fe3O4 nanoparticles synthesized at the temperature of 90° C with applying the potential of 8V for 1800 seconds. The synthesized nanocomposite ...

The solid-state structures, thermal properties, and enzymatic degradability of melt-crystallized films of random copolymers of (R)-3-hydroxybutyric acid (3HB) with different hydroxyalkanoic acids were investigated. The crystallinity, lamellar thickness, and spherulite growth rate of copolymers decreased with an increase in the carbon numbers of second monomer units for copolymers with an identi...

High crystallinity of ZnWO4 nanoparticles has been successfully synthesized via a highly effective and environmentally friendly microwave route by controlling the reaction time and temperature. The products were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), and Fourier infrared spectrum (FT-IR). The crystallinity was enhanced with the increase of the r...

Three lignocellulosic pretreatment techniques (ammonia fiber expansion, dilute acid and ionic liquid) are compared with respect to saccharification efficiency, particle size and biomass composition. In particular, the effects of switchgrass particle size (32-200) on each pretreatment regime are examined. Physical properties of untreated and pretreated samples are characterized using crystallini...

Polyethers were studied as potential materials for vascular prostheses. By crosslinking poly(tetramethylene oxide)(PTMO) with poly(ethylene oxide)(PEO), hydrophilic networks were obtained containing PTMO as well as PEO. Attempts were made to reduce the crystallinity and melting point of PTMO because of the required elastomeric behaviour at body temperature. Compared to non-crosslinked PTMO, c...