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vanDeem ter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.
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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2005年第11期2069-2072,共4页
Chemical Journal of Chinese Universities
基金
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
关键词
气相色谱
芳烃
低密度聚乙烯
扩散系数
Gas chromatography
Aromatic hydrocarbon
Low density polyethylene
Diffusion coefficient