Abstract
A bromine-terminated triblock copolymer (Br-PCL-PDMS-PCL-Br) was synthesized and employed as the stationary phase for capillary gas chromatography (GC). The statically coated Br-PCL-PDMS-PCL-Br column showed the efficiency of 2260 plates/m determined by 1-octanol at 120 °C and moderate polarity. For evaluating the separation performance, a mixture of 23 analytes was employed and the commercial HP-35 and PEG-20 M columns were used as the reference columns. Also, the positional and cis-/trans-isomers were utilized to investigate the separation performance on the Br-PCL-PDMS-PCL-Br column. Moreover, it showed higher resolution of chloroaniline and bromoaniline isomers on the Br-PCL-PDMS-PCL-Br column than commercial HP-35 and PEG-20 M columns, and exhibited different retention behavior with HP-35 column. All the results indicated that there were multiple molecular recognition interactions between the Br-PCL-PDMS-PCL-Br stationary phase and the analytes, including H-bonding, dipole–dipole, CH···π, dispersion and halogen-bonding interactions. This work provided a research basis for exploring the application of block copolymer materials in the field of chromatographic analysis.
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The work was supported by the Scientific Research Foundation of the Education Department of Liaoning Province (LJGD2020015), and the Training Project for Youth Backbone Teachers in Colleges and Universities of Luoyang Normal University.
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Conceptualization: ZC and TS; methodology: RC, QH, ZC, WZ, WL, KJ, YZ, and YL; formal analysis and investigation: RC, QH, ZC, TS, WZ, WL, KJ, YZ, and YL; writing—original draft preparation: RC; writing—review and editing: RC, ZC, and TS; funding acquisition: ZC and TS; resources: ZC and TS; supervision: ZC and TS.
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Chen, R., Cai, Z., Huang, Q. et al. A Bromine-Terminated Triblock Copolymer (Br-PCL-PDMS-PCL-Br) as the Stationary Phase for Gas Chromatography Analysis. Chromatographia 85, 883–894 (2022). https://doi.org/10.1007/s10337-022-04202-7
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DOI: https://doi.org/10.1007/s10337-022-04202-7