Synthesis and characterization of polyurea microcapsules containing essential oils with antigerminative activity |
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| Authors: | Paola Scarfato Elvira Avallone Pio Iannelli Vincenzo De Feo Domenico Acierno |
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| Affiliation: | 1. Department of Chemical and Food Engineering, University of Salerno, 84084 Fisciano (SA), Italy;2. Department of Pharmaceutical Sciences, University of Salerno, 84084 Fisciano (SA), Italy;3. Department of Materials and Production Engineering, University of Naples “Federico II”, 80125 Naples, Italy |
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| Abstract: | In this paper we report on the preparation and characterization of polyurea‐based microencapsulated systems, containing essential oils as core materials, for potential applications in controlled‐release formulations of agrochemicals. Microcapsules were synthesized by interfacial polymerization in o/w emulsion between polyfunctional isocyanates and diamines, to investigate the effect of the monomer kind on the morphology and properties of the produced samples. The synthetic conditions that gave the best results were used to microencapsulate four essential oils, able to interfere with the seed germination and radicle elongation of some test plants. The produced samples were characterized, with the aim to analyze their morphology and to verify the effectiveness of essential oil microencapsulation. Moreover, preliminary bioassay based on seed germination and subsequent radical growth were carried out to study the effects of the microencapsulated essential oils. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007 |
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| Keywords: | microcapsules polyurea interfacial polymerization essential oils antigerminative effects |
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