α-Alumina–H2O Interface Analysis by Electroacoustic Measurements☆
α-Alumina–H2O Interface Analysis by Electroacoustic Measurements☆
复制标题
通过电声测量进行 α-氧化铝-H2O 界面分析☆
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
Richard Greenwood
中科院分区：
文献类型：
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作者：
Anna Luisa Costa;C. Galassi;Richard Greenwood
在这项工作中，使用电声技术来表征氧化铝在水中的分散行为，无论是否添加阴离子聚电解质作为分散剂。电声测量可以记录zeta电位和粒度分布；此外，电导率的原位测量允许同时确定离子强度。用这种方法评价了pH值或分散剂对粉末稳定性的贡献。使用该技术可以测量各种溶液或粉末条件下（氧化铝体积%，pH值，分散剂wt%，研磨时间）的等电点和粒度分布等重要胶体参数，并且可以轻松估计完全覆盖粉末所需的最小分散剂量（Duramax D3021）。学术出版社版权所有。
In this work an electroacoustic technique was used to characterize the dispersing behavior of alumina in water with or without the addition of an anionic polyelectrolyte as dispersant. Electroacoustic measurements enabled the zeta potential and particle size distribution to be noted; additionally, the in situ measure of the conductivity allows the ionic strength to be simultaneously determined. In this way the pH or dispersant contribution to powder stabilization has been evaluated. With this technique important colloidal parameters such as the isoelectric point and particle size distribution at various solution or powder conditions (alumina vol%, pH, dispersant wt%, milling time) can be measured and the minimum amount of dispersant (Duramax D3021) required to cover completely the powder can be easily estimated. Copyright 1999 Academic Press.