فهرست مقالات Nano alumina fiber

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  1 - The effect of adding different amount of spinning additives on preparation of nano Alumina fibers using a combined method of sol gel and electrospining
  Fateme Mirjalili fyrozeh danafar
  10.22034/jna.2020.1889864.1183
  Alumina nanofibers were produced using a combined method of sol-gel and electros pinning method. In this method, the sol was prepared by mixing of tri-isoproxide aluminum in aqueous solution onitric acid. Spinning aid such as: ethylene glycol-acid lactic and poly vinyl چکیده کامل

  Alumina nanofibers were produced using a combined method of sol-gel and electros pinning method. In this method, the sol was prepared by mixing of tri-isoproxide aluminum in aqueous solution onitric acid. Spinning aid such as: ethylene glycol-acid lactic and poly vinyl alcohol was added to the solution .The sol was then heated at 80 °C to obtain gel. Then, the resulting gel was converted into aluminum oxide nanofibers by electrospinning method. The nanofibers were dried at 60 °C for 24 h and finally sintered for 2 h at 1200 ° C. The results of XRD and FTIR showed that in all samples the dominant phase was the corundum phase. Finally, to decrease the sintering temperature, magnesium nitrate hexahydrate (MgN2O6 * 6H2O) and sodium ethoxylate (SiC8 H2o O4) were added to the sol containing 10% Polyvinyl alcohol. The results of XRD and FTIR indicated the presence of corundum phase when the sintering temperature of 1000°C was used. Accordingly, the energy consumption was reduced as the sintering temperature decreased about 200°C by adding the additives,. The results of SEM and TEM showed formation of non-agglomerated nano fibers with 41nm diameters at 1000°C when 10% polyvinyl alcohol and 2% sodium ethoxylate (SiC8 H20 O4) was added to the sol. پرونده مقاله
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  2 - The effect of adding different amount of spinning additives on preparation of nano Alumina fibers using a combined method of sol gel and electrospining
  F. Mirjalili F. Danafar A. Zarei Mahmodabadi
  10.22034/jna.2020.680095
  Alumina nano fibers were produced using a combined method of sol-gel andelectros pinning method. The sol was first prepared by mixing of tri-isoproxidealuminum in aqueous solution of nitric acid. In the next step, ethylene glycol,acid lactic and poly vinyl alcohol were چکیده کامل

  Alumina nano fibers were produced using a combined method of sol-gel andelectros pinning method. The sol was first prepared by mixing of tri-isoproxidealuminum in aqueous solution of nitric acid. In the next step, ethylene glycol,acid lactic and poly vinyl alcohol were added to the solution .Finally, the sol wasthen heated at 80 °C to obtain gel. The resulting gel was converted to nano fibersof aluminum oxide by electrospinning method. The nano fibers were dried at60 °C for 24 h and sintered at 1200 °C for 2 h. The results of XRD and FTIRshowed that, in all samples the dominant phase was the corundum phase. Todecrease the sintering temperature, magnesium nitrate hexahydrate (MgN2O6 *6H2O) and sodium ethoxylate (SiC8 H2o O4) were added to the sol containing10% Polyvinyl alcohol. The XRD and FTIR analysis of this sample indicated thepresence of corundum phase when the sintering temperature of 1000°C was used.Accordingly, the energy consumption was reduced as the sintering temperaturedecreased about 200°C by adding the additives. The SEM and TEM analysis alsoshowed formation of non-agglomerated nano fibers with diameters of 41nmwhen 10% polyvinyl alcohol and 2% sodium ethoxylate (SiC8 H20 O4) was addedto the sol. پرونده مقاله