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Research Article

Polyamide microcapsules containing jojoba oil prepared by inter-facial polymerization

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Pages 471-486 | Received 26 Sep 2004, Accepted 10 Jan 2005, Published online: 03 Oct 2008
 

Abstract

Jojoba oil containing polyamide microcapsules having diameter of ∼5 µm were prepared by inter-facial polycondensation by direct method (oil-in-water). Qualitative effects of both the formulation and the process parameters on microcapsules characteristics were investigated by SEM observations. Morphological analysis showed the dependence of the external membrane compactness on the chemical nature of the water-soluble polyamine and the oil-soluble acid polychloride: 1,6-hexamethylenediamine (HMDA) and terephthaloyl dichloride (TDC) were found to favour the production of smooth and dense surfaces. The use of ultrasonic irradiations during the dispersion step to get a further reduction of microcapsules size was also evaluated.

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