The red polyester cluster focuses mostly on the types of polymers that compose microplastics, especially those associated with microfibers and the textile industry (textiles, polyurethane, rayon). It also demonstrates research interest related to modification of these polymers (polyamides, fluoropolymers), textile preparations (nonwoven fabric), and other mitigation efforts (filtration, extraction, sand) to prevent the release of microplastics into the environment.