Gholami S.,IKIU |
Mohebi M.M.,IKIU |
Journal of Materials Science: Materials in Electronics | Year: 2015
Lead Zirconate titanate nanorods Pb (Zr0.52Ti0.48) O3 were synthesized via a molten salt route. In this research, milled PZT nanopowder and sodium chloride were mixed together with triton X-100 as surfactant. In the first stage, the starting materials at molar ratio 1:5:10 (PZT:NaCl:Triton X-100) was heat treated at 800 °C for 3, 6 and 12 h. In the second stage the molar ratio of starting materials was fixed at 1:10:15 (PZT:NaCl:Triton X-100) following the same heat treatment plans. The resulting products were characterized using X-ray diffraction (XRD) and scanning electron microscopy. XRD patterns confirmed the presence of both monoclinic and triclinic structures. No PZT nanorods were produced when short time (3 h) heat treatment was applied regardless of the molar ratio of the starting materials. Cylindrical nanorods with average length of 2 μm and diameter of 50 nm were produced when the molar ratio was adjusted at 1:5:10 and heat treatment was carried out for 6 h. The nanorods are seemed to be partly destroyed when the heat treatment time was extended to 12 h. Nanorods with square shape cross section were achieved when the molar ratio was adjusted at 1:10:15 where the diameter and length were found to be 40–400 and 60–600 nm with heat treatment time of 6 and 12 h respectively. © 2015, Springer Science+Business Media New York.
Imanieh H.,IKIU |
Systems and Synthetic Biology | Year: 2013
Development of bioorganic-inorganic composites has drawn eyes to extensive attention in biomedical fields and tissue engineering. So many attempts to prepare hydroxyapatite (HA), in conjunction with various binders including polyvinyl alcohol (PVA), and collagen has performed for late 20 years. We applied a method based on the phase separation for making of polymer porous membranes. This procedure is induced through the addition of a small quantity of water (polymer-rich phase) to a solution with HA precursors (polymer-poor phase). Thermal and structural composite properties of collagen Hydrolysate (CH)-PVA/HA Polymer-Nano-Porous Membranes were analyzed by Design of experiment that was undertaken using D-optimal approach, to select the optimal combination of nano composites precursor. The resulted composite characters were investigated by Fourier transform infrared, scanning electron microscopy (SEM) and thermal gravimetric analysis. Based on the SEM images, this new method could be clearly concluded to porous CH-PVA/HA hybrid materials. Finally the hemocompatibility of nanocomposite membranes were evaluated by the hemolysis study. Graphical Abstract: [Figure not available: see fulltext.] © 2013 Springer Science+Business Media Dordrecht.