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Chromatographic assessment of two hybrid monoliths prepared via epoxy-amine ring-opening polymerization and methacrylate-based free radical polymerization using methacrylate epoxy cyclosiloxane as functional monomer
Wang, Hongwei1,2,3; Ou, Junjie1; Lin, Hui1,2; Liu, Zhongshan1,2; Huang, Guang1,2,3; Dong, Jing1; Zou, Hanfa1
关键词Hybrid Monoliths Methacrylate Epoxy Cyclosiloxane Ring-opening Polymerization Free Radical Polymerization Nano-liquid Chromatography
刊名JOURNAL OF CHROMATOGRAPHY A
2014-11-07
DOI10.1016/j.chroma.2014.09.072
1367页:131-140
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]Biochemical Research Methods ; Chemistry, Analytical
研究领域[WOS]Biochemistry & Molecular Biology ; Chemistry
关键词[WOS]CAPILLARY LIQUID-CHROMATOGRAPHY ; REVERSED-PHASE ; SMALL MOLECULES ; POROUS MATERIALS ; SOL-GEL ; COLUMNS ; SEPARATION ; PERFORMANCE ; ELECTROCHROMATOGRAPHY ; HPLC
英文摘要Two kinds of hybrid monolithic columns were prepared by using methacrylate epoxy cyclosiloxane (epoxy-MA) as functional monomer, containing three epoxy moieties and one methacrylate group. One column was in situ fabricated by ring-opening polymerization of epoxy-MA and 1,10-diaminodecane (DAD) using a porogenic system consisting of isopropanol (IPA), H2O and ethanol at 65 degrees C for 12h. The other was prepared by free radical polymerization of epoxy-MA and ethylene dimethacrylate (EDMA) using 1-propanol and 1,4-butanediol as the porogenic solvents at 60 degrees C for 12h. Two hybrid monoliths were investigated on the morphology and chromatographic assessment. Although two kinds of monolithic columns were prepared with epoxy-MA, their morphologies looked rather different. It could be found that the epoxy-MA-DAD monolith possessed higher column efficiencies (25,000-34,000 plates/m) for the separation of alkylbenzenes than the epoxy-MA-EDMA monolith (12,000-13,000 plates/m) in reversed-phase nano-liquid chromatography (nano-LC). Depending on the remaining epoxy or methacrylate groups on the surface of two pristine monoliths, the epoxy-MA-EDMA monolith could be easily modified with 1-octadecylamine (ODA) via ring-opening reaction, while the epoxy-MA-DAD monolith could be modified with stearyl methacrylate (SMA) via free radical reaction. The chromatographic performance for the separation of alkylbenzenes on SMA-modified epoxy-MA-DAD monolith was remarkably improved (42,000-54,000 plates/m) when compared with that on pristine epoxy-MA-DAD monolith, while it was not obviously enhanced on ODA-modified epoxy-MA-EDMA monolith when compared with that on pristine epoxy-MA-EDMA monolith. The enhancement of the column efficiency of epoxy-MA-DAD monolith after modification might be ascribed to the decreased mass-transfer resistence. The two kinds of hybrid monoliths were also applied for separations of six phenols and seven basic compounds in nano-LC. (C) 2014 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000344204100015
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/145589
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatog R&A Ctr, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China
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Wang, Hongwei,Ou, Junjie,Lin, Hui,et al. Chromatographic assessment of two hybrid monoliths prepared via epoxy-amine ring-opening polymerization and methacrylate-based free radical polymerization using methacrylate epoxy cyclosiloxane as functional monomer[J]. JOURNAL OF CHROMATOGRAPHY A,2014,1367:131-140.
APA Wang, Hongwei.,Ou, Junjie.,Lin, Hui.,Liu, Zhongshan.,Huang, Guang.,...&Zou, Hanfa.(2014).Chromatographic assessment of two hybrid monoliths prepared via epoxy-amine ring-opening polymerization and methacrylate-based free radical polymerization using methacrylate epoxy cyclosiloxane as functional monomer.JOURNAL OF CHROMATOGRAPHY A,1367,131-140.
MLA Wang, Hongwei,et al."Chromatographic assessment of two hybrid monoliths prepared via epoxy-amine ring-opening polymerization and methacrylate-based free radical polymerization using methacrylate epoxy cyclosiloxane as functional monomer".JOURNAL OF CHROMATOGRAPHY A 1367(2014):131-140.
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