Ultrasonic dispersion of Al-AlN and AlO nanopowder agglomerates and of nanostructured AlOOH particles

Ivanov, A.
May 2012
Russian Physics Journal;May2012, Vol. 54 Issue 12, p1413
Academic Journal
The influence of the ultrasonic radiation of power 10-60 W and frequency 22 and 2.64⋅10 kHz on the deagglomeration of Al-AlN, AlO, and AlOOH nanopowders in ethanol has been studied by using a dynamic light scattering method. It has been shown that the number-average size of the agglomerates decreases to 0.5 μm during their ultrasound dispersion at a frequency of 22 kHz for 20 min and subsequently it does vary on varying insonation duration and ultrasonic power. Two-stage ultrasonic treatment of the agglomerates at frequencies of 22 and 2.64⋅10 kHz increases the fraction of 0.2-0.5 μm particles. It has been found that efficient deagglomeration of nanopowders can be attained by sequentially increasing the ultrasonic radiation frequency.


Related Articles

  • Environmental, health and safety issues: Nanoparticles in the real world. McCall, Maxine J. // Nature Nanotechnology;Oct2011, Vol. 6 Issue 10, p613 

    The article discusses research on the risk posed by sunscreens that contain nanomaterials. It references a study by Vicki Colvin and colleagues, published in the "Journal of Nanoparticle Research." Study authors examined the shape, size, agglomeration state, crystalline structure and surface...

  • Instantaneous physico-chemical analysis of suspension-based nanomaterials. Meng, Fanxu; Ugaz, Victor M. // Scientific Reports;5/1/2015, p9896 

    High-throughput manufacturing of nanomaterial-based products demands robust online characterization and quality control tools capable of continuously probing the in-suspension state. But existing analytical techniques are challenging to deploy in production settings because they are primarily...

  • Prospects for preparing nanocomposite textile yarn (review). Geller, V. // Fibre Chemistry;Jul2013, Vol. 45 Issue 2, p65 

    Prerequisites based on experience with using a polymer concentrate (masterbatch) and providing scientific and technical information were presented and applied to the preparation of nanocomposite polyester textile yarns, which are some of the basic types of textile raw material. One of the main...

  • Induced superhydrophobicity in ZnO nanomaterial. Torchinsky, Ilya; Molotskii, Michel; Rosenman, Gil // Journal of Nanoparticle Research;Sep2010, Vol. 12 Issue 7, p2427 

    Pronounced variation of wettability from high hydrophilic state to superhydrophobic has been observed in ZnO-nanomaterial irradiated by low energy electrons. It has been found that for electron-treated nanomaterial water does not wet the ZnO-nanoparticles and does not penetrate at all inside the...

  • Non-agglomerated gold-PMMA nanocomposites by in situ-stabilized laser ablation in liquid monomer for optical applications. Schwenke, Andreas; Dalüge, Hauke; Kiyan, Roman; Sajti, C.; Chichkov, Boris // Applied Physics A: Materials Science & Processing;May2013, Vol. 111 Issue 2, p451 

    The main goal in the production of nanocomposites for optical applications is the uniform and non-agglomerated incorporation of nanoparticles into polymer matrices. Therefore, in this work gold nanoparticles have been generated by short-pulsed liquid phase laser ablation in methyl methacrylate...

  • Liquid-Liquid Interfacial Transport of Nanoparticles. Machunsky, Stefanie; Peuker, Urs Alexander // Physical Separation in Science & Engineering;Jan2007, p1 

    The study presents the transfer of nanoparticles from the aqueous phase to the second nonmiscible nonaqueous liquid phase. The transfer is based on the sedimentation of the dispersed particles through a liquid-liquid interface. First, the colloidal aqueous dispersion is destabilised to...

  • Coarse-grain molecular dynamics simulations of nanoparticle-polymer melt: Dispersion vs. agglomeration. Patra, Tarak K.; Singh, Jayant K. // Journal of Chemical Physics;Apr2013, Vol. 138 Issue 14, p144901 

    In this work, we study the influence of polymer chain length (m), based on Lennard-Jones potential, and nanoparticle (NP)-polymer interaction strength (&eh;np) on aggregation and dispersion of soft repulsive spherically structured NPs in polymer melt using coarse-grain molecular dynamics...

  • Self-polarization phenomenon and control of dispersion of synthetic antiferromagnetic nanoparticles for biological applications. Joisten, H.; Courcier, T.; Balint, P.; Sabon, P.; Faure-Vincent, J.; Auffret, S.; Dieny, B. // Applied Physics Letters;12/20/2010, Vol. 97 Issue 25, p253112 

    Using a top-down approach, synthetic antiferromagnetic micro/nanoparticles usable for biological applications were prepared. These particles exhibit 'superparamagneticlike' properties. Their magnetic susceptibility can be accurately controlled by the thickness of the constituting layers. When...

  • Nanoparticle dispersion in environmentally relevant culture media: a TiO case study and considerations for a general approach. Horst, Allison; Ji, Zhaoxia; Holden, Patricia // Journal of Nanoparticle Research;Aug2012, Vol. 14 Issue 8, p1 

    Nanoparticle exposure in toxicity studies requires that nanoparticles are bioavailable by remaining highly dispersed in culture media. However, reported dispersion approaches are variable, mostly study-specific, and not transferable owing to their empirical basis. Furthermore, many published...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics