高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (11): 2069.

• 研究论文 • 上一篇    下一篇

三种芳烃溶剂在低密度聚乙烯膜材料中无限稀释扩散系数的测定

姜珍1, 李继定1, 赵之平1, 陈翠仙1, 于宏伟2, 张志华2   

  1. 1. 清华大学化工系膜技术工程研究中心,北京100084;
    2. 大庆石化公司研究院,大庆163714
  • 收稿日期:2004-12-30 出版日期:2005-11-10 发布日期:2005-11-10
  • 基金资助:

    国家自然科学基金(批准号:20276034);国家“八六三”计划项目(批准号:2003AA328020);国家“九七三”计划项目(批准号:2003CB615701)资助

Measurement of Diffusion Coefficients of Three Aromatic Solvents at Infinite Dilution in Low Density Polyethylene Membrane Material

JIANG Zhen1, LI Ji-Ding1, ZHAO Zhi-Ping1, CHEN Cui-Xian1, YU Hong-Wei2, ZHANG Zhi-Hua2   

  1. 1. Research Center of Membrane Technology and Engineering,Department of Chemical Engineering,Tsinghua University,Beijing 100084,China;
    2. Academy of Daqing Petrochemical Company,Daqing 163714,China
  • Received:2004-12-30 Online:2005-11-10 Published:2005-11-10

摘要: 用气相色谱法测定了苯、甲苯和乙苯在固定液低密度聚乙烯中的保留时间和半峰宽,运用vanDeemter模型进行数据处理,得到3种芳烃小分子在低密度聚乙烯膜材料中的无限稀释扩散系数.

关键词: 气相色谱, 芳烃, 低密度聚乙烯, 扩散系数

Abstract: The retention time and the peak widths at half-height of benzene,toluene and ethylbenzene in the stationary phase of low density polyethylene were obtained by using gas chromatography.The diffusion coefficients of the small molecule solvents at infinite dilution were calculated with van Deemter equation.The graphs plotted according to the results of the diffusion coefficients of the three aromatic solvents at infinite dilution vs.temperatures were in agreement with the Arrhenius equation.The variance in the diffusion coefficients at infinite dilution of three aromatic solvents was analyzed according to the differences in molecular mass.

Key words: Gas chromatography, Aromatic hydrocarbon, Low density polyethylene, Diffusion coefficient

中图分类号: 

TrendMD: