Study on Separation Performance of Gas Chromatography Stationary Phase Based on Nafion Polymer

方智利; 王平; 王欣; 刘胜东; 聂启祥; 杨绍明; 徐文媛

doi:doi：10.3969/j.issn.1004-4957.2019.12.010

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Study on Separation Performance of Gas Chromatography Stationary Phase Based on Nafion Polymer

- Study on Separation Performance of Gas Chromatography Stationary Phase Based on Nafion Polymer
- Vol. 38, Issue 12, Pages: 1470-1474(2019)
- 作者机构：
  
  华东交通大学材料科学与工程学院
- 作者简介：
- 基金信息：
- DOI：doi：10.3969/j.issn.1004-4957.2019.12.010
  CLC：
- Published：2019
- 稿件说明：
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方智利, 王平, 王欣, 刘胜东, 聂启祥, 杨绍明, 徐文媛. Study on Separation Performance of Gas Chromatography Stationary Phase Based on Nafion Polymer[J]. 2019, 38(12): 1470-1474.
DOI：

方智利, 王平, 王欣, 刘胜东, 聂启祥, 杨绍明, 徐文媛. Study on Separation Performance of Gas Chromatography Stationary Phase Based on Nafion Polymer[J]. 2019, 38(12): 1470-1474. DOI： doi：10.3969/j.issn.1004-4957.2019.12.010.

摘要

该文以Nafion膜为固定相，采用动态涂覆法将其涂覆在毛细管内壁，并研究了其在气相色谱分离烷烃、醇及取代芳香烃等方面的性能。结果表明，通过改变色谱分析条件，不同碳数的直链烷烃、直链醇、蒎烯类异构体、C8芳烃异构体取代芳香位置异构体均在Nafion膜固定相上得到了有效的分离，大部分异构体在该固定相上基本按照沸点从低到高的顺序依次洗脱。此外，还对基于Nafion膜的色谱柱分离蒎烯异构体和芳香位置异构体进行了热力学研究，并发现该柱分离异构体过程为放热过程，蒎烯分离受焓变和熵变共同控制，而芳香异构体分离过程主要受焓变的控制。

Abstract

A capillary gas chromatographic column with Nafion film as stationary phase was prepared via a verified dynamic coating procedure.The separation performance of the Nafion film coated capillary column was studied with linear alkanes

linear alcohol

pinene isomer and aromatic isomer

and its morphology was analyzed by SEM.Results showed that the column could offer effective separations for linear alkanes

terpene isomer as well as aromatic positional isomer.Effect of temperature on separation of terpene isomer and aromatic positional isomer was investigated

which was used to elucidate that the separation process for aromatic positional isomer was controlled by both entropy and enthalpy

but the separation process for terpene isomer was controlled only by enthalpy.

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