色谱

色谱

• 研究论文 • 上一篇    下一篇

反相气相色谱法测定高密度聚乙烯溶解度参数

王强, 陈亚丽, 刘睿婷, 施玉格, 张正方, 唐军*   

  1. 新疆大学理化测试中心, 新疆 乌鲁木齐 830046
  • 收稿日期:2011-05-26 修回日期:2011-07-21 出版日期:2011-11-28 发布日期:2011-12-25
  • 通讯作者: 唐军,硕士,高级工程师,主要从事分析化学与高分子化学研究工作. Tel: (0991)8583278-8323
  • 基金资助:

    新疆大学石油天然气精细化工重点实验室开放课题基金项目(XJDX0908-2010-05)

Determination of solubility parameters of high density polyethylene by inverse gas chromatography

WANG Qiang, CHEN Yali, LIU Ruiting, SHI Yuge, ZHANG Zhengfang, TANG Jun*   

  1. Center for Physics and Chemistry Analysis, Xinjiang University, Urumqi 830046, China
  • Received:2011-05-26 Revised:2011-07-21 Online:2011-11-28 Published:2011-12-25

PDF

692

被引次数

10

摘要： 采用反相气相色谱(IGC)技术测定了高密度聚乙烯(HDPE)在303.15～343.15 K温度范围内的溶解度参数(δ2)及相关指标。以正己烷(n-C6)、正庚烷(n-C7)、正辛烷(n-C8)、正壬烷(n-C9)、三氯甲烷(CHCl3)及乙酸乙酯(EtAc)作为探针分子溶剂,经计算获得了探针溶剂的比保留体积(V0g)、摩尔吸收焓(ΔHS1)、无限稀释摩尔混合焓(ΔH∞l)、摩尔蒸发焓(ΔHv)、无限稀释活度系数(Ω∞1)以及探针溶剂与HDPE的Flory-Huggins相互作用参数(χ∞1,2)等指标。结果表明,上述6种探针溶剂在测定温度范围内均为HDPE的不良溶剂。此外,还推导出了HDPE在室温(298.15 K)下的溶解度参数δ2为19.00 (J/cm3)0.5。

关键词: 反相气相色谱, 高密度聚乙烯, 溶解度参数

Abstract: Inverse gas chromatographic (IGC) technology was used to determine the solubility parameters of high density polyethylene (HDPE) at the absolute temperatures from 303.15 to 343.15 K. Six solvents were applied as test probes including hexane (n-C6), heptane (n-C7), octane (n-C8), nonane (n-C9), chloroform (CHCl3) and ethyl acetate (EtAc). Some thermodynamic parameters were obtained by IGC data analysis such as the specific retention volumes of the solvents (V0g), the molar enthalpy of sorption (ΔHS1), the partial molar enthalpy of mixing at infinite dilution (ΔH∞l), the molar enthalpy of vaporization (ΔHv), the activity coefficients at infinite dilution (Ω∞1), and Flow-Huggins interaction parameters (χ∞1,2) between HDPE and probe solvents. The results showed that the above six probes are poor solvents for HDPE. The solubility parameter of HDPE at room temperature (298.15 K) was also derived as 19.00 (J/cm3)0.5.

Key words: high density polyethylene (HDPE), solubility parameter, inverse gas chromatography (IGC)