Stabilization of functional ingredients by microencapsulation:Interfacial polymerisation

3577 14 47385 6 114371 document 47385 Fernandez_Gonzalez_12_PhD.pdf application/pdf 5acda52c51cd5b85de468816cf5a6eb5 MD5 2255994 2016-01-07 11:10:46 http://etheses.bham.ac.uk//id/eprint/3577/1/Fernandez_Gonzalez_12_PhD.pdf 3577 1 1 application/pdf application/pdf en public

Fernandez_Gonzalez_12_PhD.pdf

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http://eprints.org/relation/isVersionOf http://etheses.bham.ac.uk/id/document/47385 http://eprints.org/relation/isVolatileVersionOf http://etheses.bham.ac.uk/id/document/47385 http://eprints.org/relation/isIndexCodesVersionOf http://etheses.bham.ac.uk/id/document/47385 archive 4031 disk0/00/00/35/77 2012-07-12 13:11:20 2019-01-23 09:56:36 2012-07-12 13:11:20 thesis show 0 Fernandez-Gonzalez Angel Zhang Zhibing University of Birmingham Stabilization of functional ingredients by microencapsulation:Interfacial polymerisation unpub TP 10col_ephy Embargo to 31 December 2015; No response from author (emailed 07/01/2016); apply Option A Perfume is an expensive ingredient for most laundry detergents. To target its delivery to the fabric fibres at the right moment after the wash, improve its performance and reduce costs, using perfume microcapsules is one of the technologies that have been developed. Old technology based on melamine-formaldehyde resins presents some safety and environmental issues and current microcapsules made by interfacial polymerisation techniques do not provide the desired performance. In this work it has been done a deep study of the interfacial polymerisation process focusing on the effect that the formulation and process conditions have on the final properties of the microcapsules produced. The microcapsule walls have been characterized by SEM, TEM and FTIR. The encapsulation efficiency, release profile of the perfume from the microcapsules and their mechanical properties have also been measured. Microcapsules prepared at low temperature with a mix of trimesoyl and terephthaloyl chloride as organic monomers and diethylenetriamine, hexamethylenediamine and ethylenediamine as aqueous monomers showed good mechanical strength and low permeability which make them of industrial interest. Microencapsulation of glycerol for its potential use in lipsticks and other cosmetic products has also been achieved. The use of a salt (magnesium sulphate) greatly stabilized the emulsion and permitted to form small and uniform microcapsules. The process conditions selected may also be applied to encapsulate other oil-based or water soluble active ingredients for various industrial applications. 2012-07 2011-11 graduation eng This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder. public 223 University of Birmingham School of Chemical Engineering d_ph na 2012-07 graduation