Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry and Computational Chemistry


Encapsulation of Carbon Black through Miniemulsion Polymerization as Hydrophobic Coating for Packaging Materials

Author(s): Omar R. Soliman and Saber A. Ibrahim

Polymer encapsulations of three different grades of easy dispersible carbon black, Nipex 35 with particle size 14, Nipex 90 of particle size 25 and Nipex 150 with particle size 31 nm were carried out using silica particles as a surfactant. The encapsulation was carried out by miniemulsion polymerization of styrene/butyl acrylateas a hydrophobe coating in presence of hexadecane. High initiator percentage wasessential because carbon black is an efficient radicaltrap. The morphology of the prepared encapsulated particles was investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The effect of hydrophobic coating on the life time of the food emulsion model of soybean soluble polysaccharides was studied. Moreover,the stabilityof emulsion that prepared by different Nipexgrades were studied to find the most appropriate carbon black for emulsion stabilization.

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