色谱

色谱 ›› 2013, Vol. 31 ›› Issue (2): 143-146.DOI: 10.3724/SP.J.1123.2012.09024

• 研究论文 • 上一篇    下一篇

反气相色谱法测定有机溶剂型木质素的溶解度参数

于雅晨, 李坤兰, 马英冲*, 魏立纲   

  1. 大连工业大学轻工与化学工程学院, 辽宁 大连 116034
  • 收稿日期:2012-09-17 修回日期:2012-11-15 出版日期:2013-02-28 发布日期:2013-02-05
  • 通讯作者: 于雅晨
  • 基金资助:

    国家自然科学基金项目(21106011, 21276034);辽宁省教育厅科学研究一般项目(L2012195).

Determination of the solubility parameter of organosolv lignin by inverse gas chromatography

YU Yachen, LI Kunlan, MA Yingchong*, WEI Ligang   

  1. School of Light Industry and Chemical, Dalian Polytechnic University, Dalian 116034, China
  • Received:2012-09-17 Revised:2012-11-15 Online:2013-02-28 Published:2013-02-05

PDF

341

被引次数

23

摘要： 采用反气相色谱法(IGC),于333.15～373.15 K温度范围内测定了有机溶剂型木质素的溶解度参数(δ2)及相关指标。以正辛烷(n-C8)、正癸烷(n-C10)、正十二烷(n-C12)和正十四烷(n-C14)为探针溶剂,计算了探针溶剂的特性保留体积(V0g)、摩尔吸收焓(ΔHs1)、无限稀释摩尔混合焓(ΔH∞1)、摩尔蒸发焓(ΔHv)、无限稀释活度系数(Ω∞1)以及探针溶剂与有机溶剂型木质素的Flory-Huggins相互作用参数(χ∞12)。结果表明,上述4种探针溶剂在测定的温度范围内均为有机溶剂型木质素的不良溶液;在同一温度下,参数χ∞12随着探针溶剂碳数的增加而降低。测得的有机溶剂型木质素的δ2为19.03 (J\5cm-3)1/2。

关键词: 反气相色谱, 溶解度参数, 有机溶剂型木质素

Abstract: An inverse gas chromatographic (IGC) method has been used to measure the solubility parameters (δ2) of organosolv lignin at the absolute temperatures from 333.15 K to 373.15 K. The test probe solvents were n-octane (n-C8), n-decane (n-C10), n-dodecane (n-C12), and n-tetradecane (n-C14). The specific retention volumes of the solvents (V0g), the molar enthalpy of sorption (ΔHs1), the partial molar enthalpy of mixing at infinite dilution (ΔH∞1), the molar enthalpy of vaporization (ΔHv), the activity coefficients at infinite dilution (Ω∞1), and Flory-Huggins inter action parameters (χ∞12) between organosolv lignin and probe solvents were obtained. The results showed that the above four probes are poor solvents for organosolv lignin; at the same temperature, the χ∞12 reduced with the increase of the carbon number of probe solvents. The average solubility parameter of organosolv lignin was determined as 19.03 (J\5cm-3)1/2.

Key words: organosolv lignin, solubility parameter, inverse gas chromatography (IGC)