Preparation and Characterization of a Novel Rice Paste for Bone Hemostatic Biomaterial

2017 ◽  
Vol 744 ◽  
pp. 475-479 ◽  
Author(s):  
Sittiporn Punyanitya ◽  
Rungsarit Koonawoot ◽  
Warangkul Punyanitya
Keyword(s):  
Electron Microscopy ◽  
Aqueous Solution ◽  
Moisture Content ◽  
Physical Properties ◽  
Solution Method ◽  
Rice Starch ◽  
Degree Of Swelling ◽  
Aqueous Solution Method ◽  
Scanning Electron

Bone hemostatic biomaterials were prepared with different compositions of rice starch (RS) powder and glycerin-base soap. The glycerin soap was composed of liquid glycerol:KOH:stearic acid by aqueous solution method. RS powders (10, 20, 40, and 60 wt %) was added to the purified glycerin soap. The physical properties and degradation of the obtained samples were evaluated. The samples were characterized by scanning electron microscopy (SEM), degree of swelling (DS), moisture content and degradation. An addition of RS powder increased absorbability property, the smoothness, whiteness and could be smear easily on the surface. The results of optimized condition have shown the samples of 20 wt% RS powder had the highest DS of 0.91 ± 0.25 for 90 minutes, the moisture content of 0.43 ± 0.21 % and the degradability of 69.95± 1.50 % for 48 hours. Our results concluded that the samples were sufficient physical properties for use as substitute, and more degradable than bone wax.

Effects of Anion on the Morphologies of ZnO Synthesized by an Aqueous Solution Method

2011 ◽  
Vol 284-286 ◽  
pp. 781-785 ◽  
Author(s):  
Shi Cai Cui ◽  
Da Feng Zhang ◽  
Xi Peng Pu ◽  
Xian Hua Qian ◽  
Tian Tian Ge ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Aqueous Solution ◽  
Scanning Electron Microscopy ◽  
Zinc Sulfate ◽  
Solution Method ◽  
Nano Particles ◽  
X Ray ◽  
Zinc Salts ◽  
Aqueous Solution Method ◽  
Scanning Electron

ZnO were rapidly synthesized using different zinc salts (Zn(NO3)2, Zn(CH3CO2)2, ZnCl2and ZnSO4) by an aqueous solution method at 90°C. The products were characterized by X-ray diffractometry and scanning electron microscopy. The results show that the anions have remarkable effects on the morphologies of ZnO. When Zn(NO3)2, Zn(CH3CO2)2or ZnCl2was used, ZnO was obtained with ellipsoidal, under-developed ellipsoidal and nano-particles morphologies, respectively. In the case of ZnSO4, layered basic zinc sulfate was obtained. The remarkable effects of anions on ZnO can be ascribed to the adsorption of the anions on the surface of ZnO, which hinders the further growth of ZnO nuclei. The effect of SO42-was further investigated by changing the mole ratio of SO42-to NO3-.

CORE-SHELL Zn/ZnO STRUCTURES WITH IMPROVED PHOTOCATALYTIC PROPERTIES SYNTHESIZED BY AQUEOUS SOLUTION METHOD

2013 ◽  
Vol 06 (06) ◽  
pp. 1350058 ◽  
Author(s):  
YUAN MING HUANG ◽  
QING-LAN MA ◽  
BAO-GAI ZHAI
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Activity ◽  
Solution Method ◽  
Core Shell ◽  
Green Method ◽  
X Ray ◽  
The Core ◽  
Semiconductor Junction ◽  
Aqueous Solution Method ◽  
Scanning Electron

A facile and green method was utilized to synthesize core-shelled Zn / ZnO microspheres by boiling Zn microparticles in water for improving the photocatalytic activity of ZnO . The synthesized Zn / ZnO core-shells were investigated by means of scanning electron microscope, X-ray diffractometer and photoluminescence spectrometer, respectively. The morphology analysis showed that the metallic Zn core was about 6 μm in diameter while the ZnO shell was about 600 nm in thickness. Compared to ZnO nanoparticles, the core-shelled Zn / ZnO microspheres exhibited improved photocatalytic activity in degrading methyl orange in water. Our results suggest that the metal–semiconductor junction formed at the Zn / ZnO interface is responsible for the enhanced photocatalytic activity of ZnO .

Synthesis and characterization of a Sb(v)-containing polyoxomolybdate serving as a catalyst for sulfoxidation

2018 ◽  
Vol 47 (24) ◽  
pp. 8070-8077 ◽  
Author(s):  
Jingkun Lu ◽  
Yaping Wang ◽  
Xinyi Ma ◽  
Yanjun Niu ◽  
Vikram Singh ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Solution Method ◽  
Synthesis And Characterization ◽  
Aqueous Solution Method

A Sb-containing Anderson-based polyoxomolybdate cluster, [(CH3)4N]4H8[Na5Sb3(Sb2Mo12O57)]·17H2O [1; (CH3)4N+ = TMA+], has been successfully synthesized by using an aqueous solution method and structurally characterized.

Synthesis and Characterization of Nano-Hexaferrites SrFe12O19 by Aqueous Solution Method

2011 ◽  
Vol 306-307 ◽  
pp. 404-409 ◽  
Author(s):  
Jian An Liu ◽  
Mei Mei Zhang ◽  
Yan Fei Zhang ◽  
Shu Jiang Liu
Keyword(s):  
Aqueous Solution ◽  
Magnetic Properties ◽  
Solution Method ◽  
Nano Particles ◽  
X Ray Diffraction ◽  
Nanometer Materials ◽  
Transmission Electron ◽  
Fast Synthesis ◽  
Aqueous Solution Method

Nano-hexaferrite SrFe12O19 has been prepared using the aqueous solution method. The structure and magnetic properties of SrFe12O19 have systematically been investigated by X-ray diffraction (XRD), Thermo gravimetric (TG), Fourier transform infrared spectroscopy (FTIR), Transmission Electron Microscopy (TEM), as well as Vibrating Sample Magnetometer (VSM). The XRD and TEM results showed that the samples are composed of SrFe12O19 nano-particles which are on average 70×50nm in dimensions when treated at 1200°C for 2 hours. The magnetic properties indicated that the saturation magnetization and the intrinsic coercivity were 48 Am2/kg and 506KA/m, respectively. The aqueous solution method is generally applicable to produce the nano-hexaferrite SrFe12O19 and is proved to be a promising method for fast synthesis of nanometer materials using nitrate.

Characterization of Electrophoretically Deposited Chitosan Coatings on Ti13Zr13Nb Alloy for Biomedical Applications

2013 ◽  
Vol 203-204 ◽  
pp. 212-215 ◽  
Author(s):  
Bożena Łosiewicz ◽  
Grzegorz Dercz ◽  
Magdalena Szklarska ◽  
Wojciech Simka ◽  
Marta Łężniak ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Aqueous Solution ◽  
Scanning Electron Microscopy ◽  
Biomedical Applications ◽  
X Ray Diffraction ◽  
Bioactive Coatings ◽  
X Ray ◽  
Scanning Electron ◽  
Deposition Conditions

The chitosan (CH) coatings on a Ti13Zr13Nb alloy substrate were obtained by electrophoretic deposition (EPD). The EPD yield was investigated under different deposition conditions. The microstructure of the CH coatings obtained by cataphoresis was studied by scanning electron microscopy and the chemical composition was examined using EDAX. The functional groups and formed phases were analyzed using Fourier transform infrared spectroscopy and X-ray diffraction, respectively. It was found that the CH coating thickness and porosity can be controlled by time and voltage used for the EPD process. It was ascertained that the studied EPD of the natural biopolymer, chitosan, in aqueous solution is applicable for the surface modification of the Ti13Zr13Nb implants to develop novel bioactive coatings.

scholarly journals Preparation and characterization of self-reinforced paper using NaOH/thiourea aqueous solution at room temperature

BioResources ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. 8191-8201
Author(s):  
Fuqiang Hu ◽  
Yucheng Hu ◽  
Lingling Zhang ◽  
Meixue Gan ◽  
Shangjun Liu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Aqueous Solution ◽  
Room Temperature ◽  
Paper Strength ◽  
X Ray Diffraction ◽  
Fixed Temperature ◽  
Crystallinity Degree ◽  
X Ray ◽  
Scanning Electron

The aim of this paper was to enhance paper strength in NaOH/thiourea aqueous solution at room temperature. Paper from cotton pulp was saturated with room temperature NaOH/thiourea aqueous solution and placed at a fixed temperature (8, 15, and 20 °C) for a period of time (1 h, 2 h, 4 h, and 6 h). The morphology, X-ray diffraction (XRD), mechanical properties, and density of paper were characterized. The results indicated the paper was self-reinforced. Scanning electron microscopy (SEM) photographs indicated that the structure of the treated papers was increasingly compact with decreasing temperature. The XRD results showed that the crystallinity degree of the paper decreased from 80.0% to 60.0%. The stress at break of the treated papers increased by more than fivefold. The wet tensile strength of the treated papers increased remarkably.

scholarly journals ADSORPTION OF PHENOL POLLUTANTS FROM AQUEOUS SOLUTION USING Ca-BENTONITE/CHITOSAN COMPOSITE

2015 ◽  
Vol 22 (2) ◽  
pp. 233 ◽  
Author(s):  
Poedji Loekitowati Hariani ◽  
Fatma Fatma ◽  
Fahma Riyanti ◽  
Hesti Ratnasari
Keyword(s):  
Electron Microscopy ◽  
Aqueous Solution ◽  
Contact Time ◽  
Batch Adsorption ◽  
Shrimp Waste ◽  
Initial Concentration ◽  
X Ray ◽  
Chitosan Composite ◽  
Scanning Electron

Phenolic compounds areorganic pollutants that are toxic and carcinogenic.The presence of phenol in the environmentcan be adverse to humanand the environmentalsystem. One methodthat iseffective toreduce thephenolisadsorption. In this study, the adsorption of phenol in aqueous solution using Ca-bentonite/chitosan composite was investigated. Chitosan is the deacetylation product of chitin from shrimp waste. Characterization of Ca-bentonite/chitosan composite was done by using Fourier Transform Infrared (FTIR) and Scanning Electron Microscopy-Energy Dispersive X Ray Spectroscopy (SEM-EDX). Batch adsorption studies were performed to evaluate the effects of some parameters such as initial concentration of phenol, composite weight, pH and contact time. The results showed that FTIR spectra of Ca-bentonite/chitosan composite presented the characteristic of peak of Ca-bentonite and chitosan that confirmed the successful synthesis of composite. The SEM-EDX characterizationresultsshowedCa-bentonite surfacecoverage by chitosanand the presence ofcarbonandnitrogenelementsinCa-bentonite/chitosancompositeindicated that chitosan had bonded with bentonite. The optimum condition of adsorption of Ca-bentonite/chitosan to phenol was obtained at 125 mg.L-1 of concentration in which the weight of composite was 1.0 g, the pH of solution was 7, the contact time was 30 minutes, and the capacity of adsorption was 12.496 mg.g-1.

Physical properties of La0.8Sr0.2MnO3nanotubes and fibers

2013 ◽  
Vol 1507 ◽  
Author(s):  
Daniel Felipe Simião ◽  
Alessandra Zenatti ◽  
Marcia T. Escote
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Physical Properties ◽  
Perovskite Structure ◽  
Physical Characterization ◽  
External Diameter ◽  
Ferromagnetic Transition ◽  
Microstructural Characteristics ◽  
Scanning Electron

ABSTRACTThis work describes the study of synthesis and physical characterization of nanostructured manganite oxides. The La0.8Sr0.2MnO3 (LSM) nanotubes and fibers have been prepared by electrospinning and pore wetting technique. The samples were characterized by Xray diffraction (XRD), scanning electron microscopy (SEM) and magnetization as a function of temperature (M(T)). XRD results of LSM fibers and nanotubes revealed that both samples crystallize in a rhombohedra-distorted perovskite structure. SEM pictures of these samples revealed ultrafine grains assembled in fibers and nanotubes samples. Analysis of these images revealed samples with external diameter ranging from 300 to 1.4 mm, and 7 μm to hundreds of mm in length. The M(T) measurements of samples La0.8Sr0.2MnO3 revealed a paramagnetic/ferromagnetic transition with decreasing temperature. Such transition occurs at temperatures of Tc ≈ 337 K and Tc ≈ 360 K for the nanotubes and fibers, respectively. Furthermore, this variation of the Tc values is also reported in literature for other manganite nanostructures. Such variation can be related to the microstructural characteristics observed for both LSM samples produced in this work. In general, it is believed that both methodologies allowed the production of nanostructures LSM. Also, these results suggest that the dimensionality of the samples seems to interfere in the physical properties of LSM manganite.

scholarly journals SÍNTESIS Y CARACTERIZACIÓN MORFOLÓGICA DE NANOTUBOS DE ZNO SOBRE SUBSTRATOS DE VIDRIO Y DE SNO2:F

2017 ◽  
Vol 25 (1) ◽  
pp. 35
Author(s):  
Juan Rodríguez Rodríguez ◽  
Julio Alarcón ◽  
Javier Gago
Keyword(s):  
Electron Microscopy ◽  
Aqueous Solution ◽  
Scanning Electron Microscopy ◽  
Zinc Nitrate ◽  
Spray Pyrolysis Method ◽  
Pyrolysis Method ◽  
Palabras Clave ◽  
Zno Nanotubes ◽  
Scanning Electron

En el presente trabajo se reporta la síntesis y caracterización morfológica de nanotubos de ZnO, fabricados a partir de semillas de óxido de zinc fabricadas por el método del rociado pirolítico. El crecimiento de los nanotubos de ZnO se llevó a cabo sumergiendo los sustratos con las semillas de ZnO en una solución acuosa de nitrato de zinc y metenamina. Las muestras fabricadas bajo diferentes condiciones se analizaron en su morfología por Microscopia Electrónica de Barrido. Palabras clave.- Fotocatálisis, ZnO, Nanotubos. ABSTRACTIn this paper the synthesis and morphologic characterization of ZnO nanotubes, made from zinc oxide seed produced by the spray pyrolysis method is reported. The growth of nanotubes of ZnO was conducted by dipping the substrate with a ZnO seed aqueous solution of zinc nitrate and methenamine. The samples manufactured under different conditions were analyzed in morphology by Scanning Electron Microscopy. Keywords.- Photocatalysis, ZnO, Nanotubes.

scholarly journals Synthesis and characterization of nanosized NiO2 and NiO using Triton® X-100

2009 ◽  
Vol 7 (1) ◽  
pp. 155-158 ◽  
Author(s):  
Mohammad Kooti ◽  
Mehdi Jorfi
Keyword(s):  
Electron Microscopy ◽  
Aqueous Solution ◽  
Scanning Electron Microscopy ◽  
Fine Powder ◽  
Average Diameter ◽  
Synthesis And Characterization ◽  
Xrd Diffraction ◽  
High Yields ◽  
Scanning Electron

AbstractNanosized NiO2 particles with an average diameter of 15 nm are prepared by treating of Ni(NO3)2 · 6H2O with an aqueous solution of KClO in the presence of Triton® X-100. This black fine powder of nickel peroxide was characterized by XRD diffraction, energy dispersive spectroscopy (EDS) and scanning electron microscopy (SEM). The as-prepared NiO2 can be easily transformed to nanosized NiO merely by washing it with acetone. The obtained NiO has an average diameter of 40 nm and was characterized by the same means used for NiO2. The nanoparticles of NiO2 and NiO were obtained in high yields and purities.

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