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Issue 36, 2017
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A versatile flash cyclization technique assisted by microreactor

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Abstract

Cyclic polymers have been confirmed to possess unique properties and have potential in different applications due to the absence of free end groups. However, efficient synthesis of cyclic polymers remains a significant challenge. In this context, a versatile flash cyclization technique assisted by a microreactor (or micromixer) is presented. Unlike the conventional batch system procedure, the cyclization of linear poly(ethylene oxide) (l-PEO) can be instantly and completely realized in a micromixer. Successful cyclization can also be accomplished with an elevated flow rate of l-PEO and/or catalyst solution. Based on the flash character of the microreaction system, an upgraded setup is also constructed by introducing a circulation loop to recycle the catalyst solution. The cyclization time is therefore considerably shortened and the consumption of solvent is greatly reduced, which provides a significant improvement in cyclization efficiency.

Graphical abstract: A versatile flash cyclization technique assisted by microreactor

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Publication details

The article was received on 20 Jun 2017, accepted on 08 Aug 2017 and first published on 08 Aug 2017


Article type: Paper
DOI: 10.1039/C7PY01034F
Citation: Polym. Chem., 2017,8, 5554-5560
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    A versatile flash cyclization technique assisted by microreactor

    H. Shen and G. Wang, Polym. Chem., 2017, 8, 5554
    DOI: 10.1039/C7PY01034F

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