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Controlling the Morphology of Polyurea Microcapsules Using Microfluidics

Polenz, Ingmar and Datta, Sujit S. and Weitz, David A. (2014) Controlling the Morphology of Polyurea Microcapsules Using Microfluidics. Langmuir, 30 (44). pp. 13405-13410. ISSN 0743-7463. doi:10.1021/la503234z.

PDF (Photograph of the microcapillary glass device and verification of the outer fluid (OF), middle fluid (MF), and inner fluid (IF) flow streams (Figure S1), SEM images of the PUMCs (Figures S2−S4), and determination of K_(OW)) - Supplemental Material
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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.

Item Type:Article
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URLURL TypeDescription DOIArticle Information
Datta, Sujit S.0000-0003-2400-1561
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).
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Harvard UniversityUNSPECIFIED
Issue or Number:44
Record Number:CaltechAUTHORS:20141218-104757650
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Official Citation:Controlling the Morphology of Polyurea Microcapsules Using Microfluidics Ingmar Polenz, Sujit S. Datta, and David A. Weitz Langmuir 2014 30 (44), 13405-13410
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53017
Deposited By: Tony Diaz
Deposited On:18 Dec 2014 19:50
Last Modified:10 Nov 2021 19:46

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