Low-Density Nanocellular Foams Produced by High-Pressure Carbon Dioxide

Abstract : A new type of nanocellular polymeric material based on PMMA and a MAM triblock copolymer is presented. The production avoids the use of physical additives and leads to completely homogeneous nanostructured polymers with a large number of CO2 nucleation sites. The foamed materials show average cell sizes <200nm and relative foam densities of 0.4, presenting a homogeneous cell structure. A physical effect not measured before in nanocellular materials is demonstrated, which leads to an increase of the glass transition temperature due to the confining effect of PMMA chains in the cell walls of the nanocellular foam. The effects of changing saturation pressure and MAM content in the cellular structure are described, together with three-point bending Young's modulus measured using DMA.
Document type :
Journal articles
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-00956655
Contributor : Dominique Richard <>
Submitted on : Friday, March 7, 2014 - 9:38:22 AM
Last modification on : Thursday, January 11, 2018 - 6:28:09 AM

Links full text

Identifiers

Collections

Citation

José Antonio Reglero Ruiz, Michel Dumon, Javier Pinto, Miguel Angel Rodriguez Perez. Low-Density Nanocellular Foams Produced by High-Pressure Carbon Dioxide. Macromolecular Materials and Engineering, Wiley-VCH Verlag, 2011, 296 (8), pp.752-759. ⟨10.1002/mame.201000346⟩. ⟨hal-00956655⟩

Share

Metrics

Record views

68