Polymer/mosquito-repellent
scaffolds exhibit increasing importance
in long-lasting human skin protection to be used as wearable devices
and allowing for controlled release of repellents. In this study,
ethyl butylacetylaminopropionate (IR3535) was
used as a human and environmental friendly active mosquito-repellent
serving as a solvent to form functional poly(l-lactic acid)
(PLLA) scaffolds by crystallization-based solid–liquid thermally
induced phase separation. Crystallization of PLLA in the presence
of IR3535 is faster than melt-crystallization of neat PLLA, and in
the investigated concentration range from 5 to 50 mass % PLLA, its
maximum crystallization rate increases with the PLLA content, by both,
increases of the maximum crystal growth rate and of the nuclei density.
By adjusting the polymer concentration and the crystallization temperature,
microporous scaffolds of different fine structures are obtained, hosting
the mosquito-repellent in intra- and interspherulitic pores for its
intended later evaporation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.