Release Profiles of Encapsulated Actives from Colloidosomes Sintered for Various Durations

Yow, Huai Nyin and Routh, Alexander F. (2009) Release Profiles of Encapsulated Actives from Colloidosomes Sintered for Various Durations. Langmuir, 25 (1). pp. 159-166. DOI 10.1021/la802711y

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Abstract

This paper presents the formation of low temperature colloidosomes from colloidal poly(styrene-co-butyl acrylate) particles for both water-in-oil and oil-in-water systems. An investigation into the sintering conditions examines the ultimate shell morphology formed, with longer sintering times and higher sintering temperatures producing less porous microcapsules. This has been verified by the release of an encapsulated dye from the aqueous core microcapsules, in which slower release has been detected for longer sintering times. The results are subsequently fitted with a diffusion equation to give a diffusion coefficient of fluorescein through the polymeric shell of 10−17 m2/s.

Item Type:	Article
Uncontrolled Keywords:	09AREP; BPI
Subjects:	99 - Other
Divisions:	99 - Other
Journal or Publication Title:	Langmuir
Volume:	25
Page Range:	pp. 159-166
Identification Number:	10.1021/la802711y
Depositing User:	Sarah Humbert
Date Deposited:	22 Jul 2010 11:51
Last Modified:	23 Jul 2013 09:57
URI:	http://eprints.esc.cam.ac.uk/id/eprint/1501

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