Semipermeable Microcapsules with a Block-Polymer-Templated Nanoporous Membrane

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Microcapsules with nanoporous membranes can regulate transmembrane transport in a size-dependent fashion while protecting active materials in the core from the surrounding, and are thereby useful as artificial cell models, carriers for cells and catalysts, and microsensors. In this work, we report a pragmatic microfluidic approach to producing such semipermeable microcapsules with precise control of the cutoff threshold of permeation. Using a homogeneous polymerization mixture for the polymerization-induced microphase separation (PIMS) process as the oil phase of water-in-oil-in-water (W/O/W) double emulsions, a densely cross-linked shell composed of a bicontinuous nanostructure that percolates through the entire thickness is prepared, which serves as a template for a monolithic nanoporous membrane of microcapsules with size-selective permeability. We demonstrate that the nanopores with precisely controlled size by the block polymer self-assembly govern molecular diffusion through the membrane and render manipulation of the cutoff threshold.
Publisher
AMER CHEMICAL SOC
Issue Date
2018-01
Language
English
Article Type
Article
Citation

CHEMISTRY OF MATERIALS, v.30, no.1, pp.273 - 279

ISSN
0897-4756
DOI
10.1021/acs.chemmater.7b04340
URI
http://hdl.handle.net/10203/240103
Appears in Collection
NT-Journal Papers(저널논문)CBE-Journal Papers(저널논문)
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