2-甲基-1,3-丙二醇水溶液的表面性质研究  

Study on Surface Property of 2-Methyl-1,3-Propylene Glycol Aqueous Solution

作　　者：李惠萍[1] 王红梅[1] 蒋登高[1] 陈志斌[1] 张红芹[1] 

机构地区：[1]郑州大学化工学院精细有机化工研究所,450002

出　　处：《涂料工业》2006年第3期29-31,共3页Paint & Coatings Industry

基　　金：河南省自然科学基金资助项目(511021100)

摘　　要：采用最大泡压法测定了常压下纯液体2-甲基-1，3-丙二醇（MPO）及小同浓度MPO水溶液在298．15～367．7K范围的界向张力。实验结果表明，纯MPO及其水溶液的界面张力σ随温度升高而呈线性减小；恒温下σ随浓度的增加呈幂甬数递减。MPO水溶液的表面层发生正吸附，与理论上低脂肪醇类表面张力的性质符合。而且低浓度下MPO水溶液的吸附等温线呈直线，与Gibbs吸附等温式描述的规律相吻合。The surface tension of pure liquid 2-methyl-1,3-propylene glycol(MPO) and MPO aqueous solutions with various concentrations between 298.15 ~367.7 K at normal pressure by use of maximum bubble pressure method.The experiment shows that the surface tensionσof pure MPO and MPO aqueous solution will decrease linearly with increase of temperature,reduce at exponent with increase of concentration.The surface layer of MPO solution shows positive absorption,which is conformed with surface tension property of low aliphatic alcohols theoretically.The isothermal absorption curve shows linear relation for low concentration MPO solution,which conforms to the Gibbs isothermal absorption equation.

关 键 词：2-甲基-1 3-丙二醇(MPO) 二元体系 最大泡压法 表面张力 吸附量 

分 类 号：TQ630.72[化学工程—精细化工]