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. https://resolver.caltech.edu/CaltechAUTHORS:20141218-104757650

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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.

Item Type:

Article

Related URLs:

URL	URL Type	Description
http://dx.doi.org/10.1021/la503234z	DOI	Article
http://pubs.acs.org/doi/abs/10.1021/la503234z	Publisher	Article
http://pubs.acs.org/doi/suppl/10.1021/la503234z	Publisher	Supporting Information

ORCID:

Author	ORCID
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).

Funders:

Funding Agency	Grant Number
ConocoPhillips	UNSPECIFIED
Harvard University	UNSPECIFIED
NSF	DMR-1310266
NSF	DMR-0820484
BASF	UNSPECIFIED

Issue or Number:

DOI:

10.1021/la503234z

Record Number:

CaltechAUTHORS:20141218-104757650

Persistent URL:

https://resolver.caltech.edu/CaltechAUTHORS:20141218-104757650

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

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No commercial reproduction, distribution, display or performance rights in this work are provided.

ID Code:

53017

Collection:

CaltechAUTHORS

Deposited By:

Tony Diaz

Deposited On:

18 Dec 2014 19:50

Last Modified:

10 Nov 2021 19:46

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