NATURE is a MSCA-ITN European Industrial Doctorate project run by two institutions: one non-academic (POLYKEY POLYMERS, Spain) and one academic (University of Birmingham, UK). NATURE is currently recruiting four highly motivated PhD candidates. The offered positions are available to start August-September 2021 with a duration of 3 years. All positions entail mobility between two countries: UK and Spain. All PhD students will spend 50% of their total employment time at POLYKEY POLYMERS (Spain).