The effect of surfactant adsorption on sedimentation behaviors of Al2O3-toluene suspensions

文化大學機構典藏 CCUR > 理工學院 > 工學院 > 化學工程與材料工程學系暨碩士班 > 期刊論文 > Item 987654321/2997

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://irlib.pccu.edu.tw/handle/987654321/2997

题名:	The effect of surfactant adsorption on sedimentation behaviors of Al2O3-toluene suspensions
作者:	Tseng WJ Teng KH
贡献者:	材料所
关键词:	surfactant Al2O3 dispersion sedimentation suspension stability
日期:	2001
上传时间:	2009-12-11 10:56:40 (UTC+8)
摘要:	The sedimentation behavior and suspension stability of submicrometer Al2O3 powder-toluene mixtures have been investigated using various organic surfactants to aid powder dispersion in a dilute solids concentration (4.8 vol.%). The surfactants used include a commercially-available, carbonate-based dispersant (hereafter termed the `SOL') and some fatty acids (e.g. stearic acid `SA', oleic acid `OA' and 12-hydroxystearic acid `HSA') in a concentration range 0.3-5 wt.% of the alumina loading. The experiment reveals that the surfactant nature is critical to the suspension stability. The suspensions follow a decreasing order of stability SOL > HSA > SA > OA for the Al2O3-toluene mixtures. This surfactant-dependent behavior is critically related to the adsorption affinity of the surfactant molecules on the powder surface in the carrier medium. The adsorption isotherms exhibit the Langmuir-typed behavior and reach a saturation plateau over a range of 1.3-2.4 mg m(-2), revealing a surfactant-specific characteristic. (C) 2001 Elsevier Science B.V. All rights reserved.
關聯:	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING Volume: 318 Issue: 1-2 Pages: 102-110
显示于类别:	[化學工程與材料工程學系暨碩士班] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	Text	1888	检视/开启

在CCUR中所有的数据项都受到原著作权保护.

数据加载中.....