cellulose foam (IMAGE) Graz University of Technology Caption The production of bio-based materials (pictured here: foam made from microfibrillar cellulose) is the focus of research interest at the Institute of Bioproducts and Paper Technology. Credit © TU Graz / BPTI Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.