|256. Ruckdäschel, H.; Rausch, J.; Sandler, J.K.W.; Altstädt, V.; Schmalz, H.; Müller, A.H.E.: Foaming of Miscible and Immiscible Polymer Blends, Mater. Res. Soc. Symp. Proc., 977E (2007) -- PDF|
Batch-foaming of miscible, immiscible and compatibilized polymer blend systems over a wide compositional range was carried out using carbon dioxide as a physical blowing agent. The resulting foam morphology was characterized by a detailed evaluation of foam density as well as of the cellular parameters. With regard to multiphase blends, transmission electron microscopic observations further provided a detailed insight into the cell wall morphology. The role of the melt-elongational properties and of the glass transition behavior of the various blend systems on the foaming characteristics was systematically elucidated. While the miscible blends showed a simple additivity behavior with regard to their foaming characteristics and properties, a significant influence of the initial blend morphology is demonstrated for the multiphase blends.
- Project: SFB 481 TP A10: Morphology Development of Polymer Blends and Block Copolymers During Foaming with Selective Solvents