SEARCH Articles Figures Tables Biodegradable Polymer-based Nanocomposites Nanostructure Control and Nanocomposite Foaming with the Aim of Producing Nano-cellular Plastics Flammability of Polymer Foams Polymer foams Polymers foaming Principles of Polymer Foam Classification Reconstruction of Closed-cell Polymer Foam Structure Stretching and Foaming of Polymers Three Generations of Foamed Polymers