利用异氰酸三缩水甘油酯与三乙烯四胺在聚(苯乙烯-二乙烯基苯)微球表面的胺固化反应构建富胺涂层,用于制备阴离子交换固定相

IF 2.8 3区 工程技术 Q2 CHEMISTRY, ANALYTICAL Journal of separation science Pub Date : 2024-09-09 DOI:10.1002/jssc.202400369
Junwei Liu, Yuqi Yan, Haojie Li, Shiting Zhang, Guoqing Wang, Yu-an Sun, Yan Zhu
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引用次数: 0

摘要

环氧树脂作为一种重要的热固性聚合物,在各种基材上都有出色的附着力。有鉴于此,利用胺固化反应将异氰酸三缩水甘油酯与三乙烯四胺网状涂覆在聚苯乙烯-二乙烯基苯表面,得到聚苯乙烯-二乙烯基苯-异氰酸三缩水甘油酯-三乙烯四胺复合微球。异氰酸三缩水甘油酯-三乙烯四胺中的氨基和环氧基赋予聚(苯乙烯-二乙烯基苯)良好的反应活性,可在温和的条件下对其进行季铵化处理,从而获得阴离子交换色谱固定相。通过扫描电子显微镜、傅立叶变换红外光谱、N2 吸附-解吸实验等对季铵化聚(苯乙烯-二乙烯基苯)@三缩水甘油异氰酸酯-三乙烯四胺进行了表征。聚(苯乙烯-二乙烯基苯)@三缩水甘油异氰酸酯-三乙烯四胺具有尺寸均匀的聚(苯乙烯-二乙烯基苯)微球和良好的三缩水甘油异氰酸酯-三乙烯四胺反应活性,为制备阴离子交换固定相提供了灵活的策略。该色谱柱具有优异的化学和机械稳定性以及色谱性能。最后,该色谱柱被成功应用于酱菜中亚硝酸盐的测定。
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Construction of amine-rich coating utilizing amine curing reaction of triglycidyl isocyanate with triethylenetetramine on the surface of poly(styrene-divinylbenzene) microspheres for preparation of anion exchange stationary phase

Epoxy resins, as important thermosetting polymers, exhibit excellent adhesion to various substrates. In view of this, reticulate coating of triglycidyl isocyanate with triethylenetetramine was introduced onto the surface of poly(styrene-divinylbenzene) utilizing amine curing reaction to obtain poly(styrene-divinylbenzene)@triglycidyl isocyanate-triethylenetetramine composite microspheres. The amino groups and epoxy groups of triglycidyl isocyanate-triethylenetetramine endowed poly(styrene-divinylbenzene) with good reactivity, which could be quaternized under mild conditions to obtain an anion exchange chromatographic stationary phase. The quaternized poly(styrene-divinylbenzene)@triglycidyl isocyanate-triethylenetetramine was characterized by scanning electron microscope, Fourier-transform infrared spectroscopy, N2 adsorption-desorption experiment, et al. The chromatographic performance of the customized column was evaluated by separating seven conventional anions, organic weak acids, and carbohydrates. Poly(styrene-divinylbenzene)@triglycidyl isocyanate-triethylenetetramine possesses the uniform size of poly(styrene-divinylbenzene) microspheres and good reactivity of triglycidyl isocyanate-triethylenetetramine, which offers a flexible strategy for the preparation of anion exchange stationary phase. The column exhibits excellent chemical and mechanical stability and chromatographic performance. Finally, the column was successfully applied for the determination of nitrite in pickles.

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来源期刊
Journal of separation science
Journal of separation science 化学-分析化学
CiteScore
6.30
自引率
16.10%
发文量
408
审稿时长
1.8 months
期刊介绍: The Journal of Separation Science (JSS) is the most comprehensive source in separation science, since it covers all areas of chromatographic and electrophoretic separation methods in theory and practice, both in the analytical and in the preparative mode, solid phase extraction, sample preparation, and related techniques. Manuscripts on methodological or instrumental developments, including detection aspects, in particular mass spectrometry, as well as on innovative applications will also be published. Manuscripts on hyphenation, automation, and miniaturization are particularly welcome. Pre- and post-separation facets of a total analysis may be covered as well as the underlying logic of the development or application of a method.
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