resumo
Capsules with a liquefied core were fabricated via the assembly of polymeric droplets induced by superamphiphobic surfaces. These highly repellent substrates exhibit distinct features such as (i) an easy and precise control over the particle size and shape, (ii) a high encapiulation efficiency, (iii) mild processing conditions, and (iv) the possibility to include any Object in either a water or oil-based liquid core, which are not found on the current available strategies. As proof of concept, a photo cross-linkable derivative of chitosan was used to produce the polymeric shell while a wealth variety of template cores were tested using a reversible cross-linking mechanism, interfacial gelation process or ice. Owing to the widespread application of polymeric capsules, the developed strategy is poised to usher the development of the next generation of materials not only for biomedical purposes but also for cosmetics, agriculture and electronics.
palavras-chave
SUPERHYDROPHOBIC SURFACES; MICROPARTICLES; MICROCAPSULES; FABRICATION; PARTICLES; CARRIERS; CELLS
categoria
Chemistry
autores
Costa, AMS; Mano, JF
nossos autores
Ana Margarida Silva Costa
Estudante de doutoramento
João Mano
Vice-DiretorGrupos
G4 - Materiais Renováveis e Economia Circular
G5 - Materiais Biomiméticos, Biológicos e Vivos
agradecimentos
A.M.S.C. thanks Fundacao para a Ciencia e Tecnologia (FCT) for the financial support through the Ph.D. grant (SFRH/BD/101748/2014). This work was supported by European Research Council grant agreement ERC-2014-ADG-669858 for project ATLAS.