Cover Image, Volume 138, Issue 26

Abstract

Foaming of rubbery polymers with physical foaming agents in confinement using a mold leads to the alteration of surface texture of the polymer foam and influences the development of pore morphology. Joseph Sarver and Erdogan Kiran explore the consequences of confined foaming on rubbery elastomers and review the use of molds in polymer foaming with carbon dioxide. The cover image shows an SEM micrograph of poly(ethylene‐co‐vinyl acetate‐co‐carbon monoxide) films foamed between porous metal plates which leads to a foam with ridge‐like structure on the surface. DOI:https://doi.org/10.1002/app.50698

Impacts of cellulose nanofibers on the morphological behavior and dynamic mechanical thermal properties of extruded polylactic acid/cellulose nanofibril nanocomposite foam

“…Contrary to the batch process in order to generate foam, extrusion, thanks to being a continuous process, is more broadly applied for industrial purposes. Many activities have been done to improve the mechanical properties of PLA, but these actions do not meet the requirements of industrialization due to the type of process 58–60 …”