ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Carnauba wax microparticles produced by melt dispersion technique
Jelena Milanovic, Steva Levic, Verica Manojlovic, Viktor Nedovic, and Branko Bugarski
Department of Chemical Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11120 Belgrade, Serbia
Abstract: Melt dispersion technique was investigated for carnauba wax microparticles production. Microbeads with spherical shape and
narrow size distribution were produced. The main objective of this study was to investigate the effect of significant process
variables (initial wax concentration, stirring speed, stirring time, and surfactants) on sphericity, size distribution, and
morphological properties of wax microparticles. Optimal conditions were evaluated on the basis of particle size distribution
and visual analysis. Surface morphology of microparticles was characterized by scanning electron microscopy (SEM). Effects
of process conditions on the size distribution of particles were evaluated by sieve analysis. Main purpose of these investigations
was to apply optimized parameters to aroma encapsulation for their use in food and feed industry.
Keywords: melt dispersion – carnauba wax – surfactants – microparticles
Full paper is available at www.springerlink.com.
Chemical Papers 65 (2) 213–220 (2011)