Available online at www.sciencedirect.com ScienceDirect Materials Today: Proceedings 5 (2018) 22621–22629 www.materialstoday.com/proceedings 2214-7853© 2018 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility ofInternational Conference on Advances in Science & Engineering ICASE - 2017. ICASE_2017 Microencapsulation of Cypermethrin Via Interfacial Polymerization for Controlled Release Application Vinayak Kamble, Manohar Sawant, Prakash Mahanwar* Department of Polymer and Surface Engineering, Institute of Chemical Technology, Matunga Mumbai-400019, India Abstract The microencapsulation of pesticides has growing attention recently, which is a promising approach to achieve the controlled release and improve the stability of active ingredients.In this study we prepared cypermethrin/polyurea microcapsules by interfacial polymerization. The microcapsules were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, and their release kinetics, were also detected.The microcapsules had excellent encapsulationefficiency and loading ability for cypermethrin 96.23%. A sustainable release cypermethrin was observed over 60-daytrial for the different score to shell ratio. Faster release was observed for core to shell ratio of 5:1 which produces the thinner shell material which results in the high amount of diffusion of the cypermethrin through shell as compared to other formulation. The slower cypermethrin release was observed for the lower core to shell ratio (2.5:1). The maximum sustained release content of cypermethrin was found to be 94% for the ratio of 5:1 (core to shell). While slower release was obtained for the ratio of 2.5:1 (65.95%). © 2018 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility ofInternational Conference on Advances in Science & Engineering ICASE - 2017. Keywords:Cyperemethrin; polyurea; microencapsulation; interfacial polymerization 1. Introduction Agriculture is the largest and most important component of the world, there has been increase the agricultural yield in recent years due to population growth. Increase in the yield has been achieved by improved seed and crops, applications of fertilizers and pesticides, and use of advanced heavy agricultural machinery [1]. Pesticides, the agrochemicals cover a wide range of compounds includes insecticides, herbicides rodenticides, molluscicides, nematicides, plant growth regulators and others, that are used to crop protection and controlling pest * Corresponding author Tel.: +91-22-33612401; fax: +91-22-33611020. E-mail address: pa.mahanwar@ictmumbai.edu.in