Published November 11, 2014
| Supplemental Material
Journal Article
Open
Controlling the Morphology of Polyurea Microcapsules Using Microfluidics
- Creators
- Polenz, Ingmar
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Datta, Sujit S.
- Weitz, David A.
Abstract
We use microfluidics to continuously produce monodisperse polyurea microcapsules (PUMCs) having either aqueous or nonaqueous cores. The microcapsule shells are formed by the reaction between an isocyanate, dissolved in oil, and an amine, dissolved in water, at the surface of oil-in-water or water-in-oil drops immediately as they are formed. Different microcapsule morphologies can be generated using our approach. The thickness of the microcapsule shell increases with an increase in the amine solubility in the oil; this finding provides a simple mechanism by which the PUMC shell thickness can be controlled.
Additional Information
© 2014 American Chemical Society. Received: August 19, 2014; Revised: October 15, 2014; Published: October 16, 2014. We thank Christian Holtze and Regina Klein for discussion. S.S.D. acknowledges funding from ConocoPhillips. This work was supported by the BASF Advanced Research Initiative @ Harvard University, the National Science Foundation (DMR-1310266), and the Harvard MRSEC (DMR-0820484).Attached Files
Supplemental Material - la503234z_si_001.pdf
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Additional details
- Eprint ID
- 53017
- Resolver ID
- CaltechAUTHORS:20141218-104757650
- ConocoPhillips
- Harvard University
- DMR-1310266
- NSF
- DMR-0820484
- NSF
- BASF
- Created
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2014-12-18Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field