Novel approach based on autoclave bead foaming to produce expanded polycarbonate (EPC) bead foams with microcellular structure and controlled crystallinity

Polycarbonate (PC) is a widely used engineering thermoplastic. Also, bead foaming technology method to produce high-performance, low-density foams with complex geometries. In this work, expanded polycarbonate (EPC) microcellullar structure and low density have been produced for the first time using autoclave technique. The effect of processing parameters, such as saturation temperature time, on characteristics EPC foams, analyzed. Contrary total amorphous solid material, obtained present crystalline phase characterized by melting peak around 235 °C. crystallization process might be taking place during samples CO2. Results show that allows controlling density, whereas can tool control crystallinity degree in range from 7.5 45 min, without clear influence cellular structure. densities between 116 592 kg/m3, cell sizes approximately 4–5 µm, crystallinities ranging 0–11% were proper modification parameters. Then, use different parameters thermal properties EPC, thanks process.