Phys.org October 11, 2022
With the help of a 3D printer, researchers in Germany encapsulated the active ingredient IR3535, designed to repel mosquitoes, and formed it into the desired shape, such as a ring, or a bracelet. The item can be worn, and it releases the agent for a long time. The basic idea is that the insect repellent continuously evaporates and forms a barrier for insects. Mosquito sprays containing IR3535 are very gentle on the skin and have been used all over the world for many years. The rate at which the insect repellent evaporates depends on many different factors, including temperature, concentration and the structure of the polymer used. After conducting various experiments and simulations, the team predicted that the insect repellent needed well over a week to evaporate completely at a temperature of 37°C (98,6 °F, i.e., body temperature). Through prototypes they have proved the concept of wearable insect repellent, according to the researchers further research is needed to determine how well they function under actual conditions…read more. TECHNICAL ARTICLEÂ
Graphical abstract. Credit: International Journal of Pharmaceutics, Volume 624, 25 August 2022, 122023Â