Adsorption of Polyethylene Glycol at the Interface of Dicalcium Silicate - Sodium aluminate solution

被引：0
作者：
Yu, Haiyan [1 ]
Pan, Xiaolin [1 ]
Lu, Zhongke
Ding, Tingting [1 ]
机构：
[1] Northeastern Univ, Sch Mat Met, Shenyang 110004, Liaoning, Peoples R China
来源：
LIGHT METALS 2011 | 2011年
关键词：
Polyethylene glycol; beta-CaO center dot SiO2; Sodium aluminate solution; Adsorption; SURFACTANTS;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Surfactants, such as polyethylene glycol (PEG), are widely used to inhibit the secondary reaction of dicalcium silicate (beta-CaOSiO2) in sodium aluminate solution. The adsorption isotherm of PEG on beta-CaOSiO2 in sodium aluminate solution at 80 C was researched in this paper. It was found that the type of surface adsorption of PEG is saturated adsorption, and the adsorption behavior belongs to "S"-type, according with the multi-molecular layer adsorption model of the Freundlich Equation. The surface coverage of PEG close to saturated adsorption derived from the specific surface area of beta-CaOSiO2 is 0.723 mol/d mu(2). The relation curves between the surface pressure and the molecular area of adsorption film were obtained according to the adsorption results at the solid-liquid interface by Gibbs formula. The variation of interfacial energy caused by adsorption, as well as the relationship between the relation curves and the type of adsorption was also discussed.
引用
收藏
页码：251 / 254
页数：4
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