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Encapsulation of N, N-dimethyl-meta-toluamide and citronella oil via miniemulsion polymerization

Grant number: 16/13427-0
Support type:Scholarships in Brazil - Master
Effective date (Start): November 01, 2016
Effective date (End): February 28, 2018
Field of knowledge:Engineering - Chemical Engineering - Industrial Operations and Equipment for Chemical Engineering
Principal researcher:Liliane Maria Ferrareso Lona
Grantee:Guilherme Martinate Gomes
Home Institution: Faculdade de Engenharia Química (FEQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil


The use of insect repellents is a key preventive measure for the transmission of diseases such as dengue, malaria and chikungunya. Although some repellents can be applied to the skin in the form of lotions, their use is restricted because they cannot be applied in babies, which are extremely vulnerable to diseases mentioned above. Encapsulation of these substances and their use in ink as repellents surge as a promising alternative to prolong the repellent effect through controlled release and protect indoors.The miniemulsion polymerization is a simple technique that allows the encapsulation of substances in polymeric nanocapsules. The release of the repellent substance into the air is closely related to the properties of the polymer forming the shell of the nanocapsule.This project aims to encapsulate repellent substances (such as DEET and Citronella oil) via miniemulsion polymerization method using different methacrylic monomers. Synthesis of nanocapsules will be conducted to assess the effectiveness of encapsulation repellents. The polymer is characterized by thermal analysis, microscopy and molar mass distribution. Release experiments are performed for polymers with different glass transition temperatures (Tg), to determine a composition of monomers suitable to the purpose. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
GOMES, G. M.; BIGON, J. P.; MONTORO, F. E.; LONA, L. M. F.. Encapsulation of N,N-diethyl-meta-toluamide (DEET) via miniemulsion polymerization for temperature controlled release. Journal of Applied Polymer Science, v. 136, n. 9, . (16/13427-0)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
GOMES, Guilherme Martinate. Encapsulation of N,N-diethyl-meta-toluamide and citronella oil via miniemulsion polymerization. 2018. Master's Dissertation - Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Química Campinas, SP.

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Filed patent(s) as a result of this research project

Solicitação em análise e dentro do prazo legal de sigilo previsto na legislação BR1020180095250 - Universidade Estadual de Campinas (UNICAMP) . Solicitação em análise e dentro do prazo legal de sigilo previsto na legislação - May 2018, 10