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Novel Monolithic Capillary Column with Well-Defined Macropores Based on Poly(styrene-co-divinylbenzene)

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Studies on Porous Monolithic Materials Prepared via Sol–Gel Processes

Part of the book series: Springer Theses ((Springer Theses))

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Abstract

Macroporous polymer monoliths based on poly(styrene-co-divinylbenzene) with varied styrene/divinylbenzene ratios have been prepared by organotellurium-mediated living radical polymerization. The well-defined co-continuous macroporous structure can be obtained by polymerization-induced spinodal decomposition, and the pore structures are controlled by adjusting the starting composition. The effects of the addition of styrene on the pore characteristics have been investigated. In addition, the separation efficiency of small molecules (alkylbenzenes) in the obtained monoliths has been evaluated in the capillary format by high-performance liquid chromatography (HPLC) under the isocratic reversed-phase mode. Baseline separations of these molecules with a low pressure drop (~2 MPa) have been achieved owing to the well-defined macropores and to the less-heterogeneous crosslinked networks. It was also revealed that the increase in styrene/divinylbenzene ratio decreased the retention of alkylbenezenes on the polymer monolithic column due to the less crosslink density.

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  1. Graduate School of Engineering, Kyoto University, Kyoto, Japan

    George Hasegawa

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  1. George Hasegawa
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Correspondence to George Hasegawa .

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Hasegawa, G. (2013). Novel Monolithic Capillary Column with Well-Defined Macropores Based on Poly(styrene-co-divinylbenzene). In: Studies on Porous Monolithic Materials Prepared via Sol–Gel Processes. Springer Theses. Springer, Tokyo. https://doi.org/10.1007/978-4-431-54198-1_4

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