Preparation of biocompatible films from aqueous dispersions of zein nanoparticles Article Swipe
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· 2019
· Open Access
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· DOI: https://doi.org/10.5281/zenodo.4007087
· OA: W3207150246
In this work, a stable aqueous zein dispersion i.e. zein pseudolatex (latex - colloidal dispersion<br> of polymer particles in a liquid) was prepared by spontaneous antisolvent precipitation of 10%<br> w/w zein solution in 90% v/v aqueous ethanol. The prepared dispersion was concentrated in a<br> rotary evaporator to a concentration of 4%. The method used for film preparation was by casting<br> the zein dispersions in polystyrene dishes and vacuum-drying them at 60°C. During the film<br> formation process several steps took place including water loss, deformation and coalescence<br> of nanoparticles, resulting in homogenous film. Zein films prepared without a plasticizer are<br> brittle, therefore zein films were plasticized with either propylene glycol (PG), glycerol (GLY),<br> polyethylene glycol 200 (PEG 200) or polyethylene glycol 600 (PEG 600).
