標題: Dispersion of nanoscale BaTiO3 suspensions by a combination of chemical and mechanical grinding/mixing processes
作者: Ying, Kuo-Liang
Hsieh, Tsung-Eong
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: BaTiO3;nanometer-scale dispersion;chemical;dispersant;nanogrinding
公開日期: 5-十一月-2007
摘要: The colloidal stability of aqueous nanometer- and micrometer-scale barium titanate (BaTiO3) utilizing poly (methacrylic acid) (PMAA-Na) and polyacrylamide/(alpha-N,N-dimethyl-N-acryloyloxyethyl)ammonium ethanate (PDAAE) was investigated. In addition to chemical dispersants, the effects of mechanical milling using either conventional ball milling or nanogrinding/-mixing on the dispersion of BaTiO3 suspensions were also studied. Characterization of the particle size distribution (d(50)), viscosity, and morphology of BaTiO3 particles in the suspensions revealed that a sole chemical dispersant or mechanical milling was insufficient to achieve nanometer-scale dispersion. The best dispersion results were obtained with a combination of PMAA-Na dispersant and nanogrinding/-mixing, which could provide sufficient electronic repulsive force and shear force to disperse the 80-nm BaTiO3 powders uniformly in the aqueous suspension. (C) 2007 Wiley Periodicals, Inc.
URI: http://dx.doi.org/10.1002/app.24935
http://hdl.handle.net/11536/10127
ISSN: 0021-8995
DOI: 10.1002/app.24935
期刊: JOURNAL OF APPLIED POLYMER SCIENCE
Volume: 106
Issue: 3
起始頁: 1550
結束頁: 1556
顯示於類別:期刊論文


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