INTEMA   05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Encapsulation technologies to achieve high loading of a biorepellent on textiles
Autor/es:
L. HERMIDA; J. ARATA; M. MIRÓ SPECOS; D. TOPOLLÁN; F. BUFFA; V. MUÑOZ; G.A. ABRAHAM
Lugar:
Bratislava
Reunión:
Congreso; International Conference on Bioencapsulation; 2014
Institución organizadora:
Bioencapsulation Research Group
Resumen:
Repellent textiles have been developed as an alternative strategy for the
control of different mosquito species, which are vectors of widely spread
diseases such as malaria and dengue. The repellent finishing of textile
materials is useful to avoid the contact with the skin and/or control the
release of volatile substances. Citriodiol is one of the biopesticides tested and registered by the EPA,
and included in the European Biocidal Products Directive 98/8/EC. We have
previously encapsulated citriodiol by complex coacervation, applied it to
cotton textiles and demonstrated its high repellent efficacy (Hermida 2011). A
great variety of repellent textile products can be designed for different
applications, therefore it is important to develop finishing treatments to
achieve a high loading of the repellent and modulate its release.
In this work we show the encapsulation of Citriodiol with
the biocompatible polymer Ethyl Cellulose (EC) using nanoprecipitation,
emulsion-solvent evaporation and electrospray. The micro/nanoparticles were
applied to cotton textiles and characterized. Alternatively, fabrics were
grafted with ciclodextrins and further treated with Citriodiol to achieve reloadable
textiles. The different developed technologies have been compared in order to
select the most suitable for further field assays.