National University of Singapore,
Keywords: nanofibrous, air filters, self-organizing
Summary:Particulate matter pollution in air poses a serious health threat and is responsible for thousands of deaths annually. Among PM particles, PM 2.5 mainly causes even more morbidity and mortality worldwide after prolonged exposures, owing to their small particle size can penetrate human bronchi and lungs compared to other larger size resulting in lung disease, emphysema and lung cancer, especially in susceptible individuals and those suffering from respiratory and heart disease, their condition may be worsened by these particulate matter particles. A nanofiber technology which relies on electrostatically charged nanofibers for capturing harmful PM 2.5 particles and PM 10 particles and simultaneously provides shielding from harmful UV radiations has been developed. The novel nanofibers design is mimicked from a species of spider which capture insects due to its electrostatic nature. Also the design of fibers which is based on self assembly of organic material resembles the shape design of the spider web. The developed filters can be used for personal face masks and window based air filter as a standalone device for achieving healthier indoor living environment.