Nanoporous polymeric materials are porous materials with pore sizes in the nanometer range (that is, below 500 nm), processed as bulk or film materials, and from a wide set of polymers. Over the last several years, research and development on these novel materials have progressed significantly, because it is believed that the reduction of the pore size to the nanometer range could strongly influence some of the properties of porous polymers, providing unexpected and improved properties compared to conventional porous and microporous polymers and non-porous solids.

In recent years, the CellMat laboratory has become a reference in this field. The research carried out at CellMat has made it possible to demonstrate for the first time the presence of the Knudsen effect in this type of breathable materials, to demonstrate the possibility of producing transparent foams and to verify the improvement of the mechanical properties of these novel materials.

The promising properties of these materials make them interesting for a variety of applications.

Javier Pinto

Professor of Condensed Matter Physics

Miguel Ángel Rodríguez

Full Professor of Condensed Matter Physics

Research services offer

Cellular structure of a Microcellular and a Nanocellular polymer based on PMMA

Nanocellular polymers: Confinement effects

Fields of activity

  • Development of systems and formulations for the production of nanocellular polymers.
  • Analysis of the foaming mechanisms that take place in the production of nanocellular polymers using extreme or conventional processing conditions.
  • Evaluation of the composition – process – structure – properties relationship.
Nanocellular polymers: Potential areas of applications
Experimental data of the thermal conductivity of the gas phase as a function or cell size. The experimental data fit the Knudsen equation
Transparent nanocellular polymer with a relative density of 0.4 and a cell size of 11 nm.  The sample with the same relative density but 225 nm of cell size is opaque


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