Polymer–Clay Nanocomposite Foams Prepared Using Carbon Dioxide


  • The authors gratefully acknowledge financial support from the National Science Foundation and NSF I/UCR Center for Advanced Polymer and Composite Engineering (CAPCE) at The Ohio State University.


Poly(methylmethacrylate) and polystyrene–clay nanocomposites have been synthesized and exfoliated clay dispersion has been achieved (see Figure). Nanocomposite foams have been prepared using CO2 as the foaming agent. Orders of magnitude increase in nucleation efficiency was accomplished by manipulation of clay dispersion and polymer–clay–CO2 interaction.