FOIM: Thermal Foaming of Shape Memory Polyurethane Foil

Abstract

Inside Front Cover: On the bottom left-hand side of the cover, three people are sitting in front of a movie screen watching the film “FOIM”, a neologism from “FOIl” and “foaM”. This film is shown in five individual images on the right-hand side of the cover. It shows the gradual transformation of a foil of shape memory polymer into a foam, triggered by the application of heat. To illustrate the required temperature increase, the images contain a color gradient from cold (blue) to warm (red). The background of the cover exhibits a microscopic image of the foam, which is also colored using the same gradient. More details can be found in article 2401103 by Anna-Lisa Poser and Thorsten Pretsch.