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Poster

Nanocellular PMMA with tunable cellular structure by changing the rheological behaviour of the polymer matrix.

Wednesday (24.10.2018)
19:15 - 19:18
Part of:
Line-Up:
- Poster Battery housings for electric vehicles using CFRP and aluminium foam 0 Joachim Baumeister
- Poster Manufacturing and characterization of open-cell stainless steel foams by investment casting 1 Jan Frömert
- Poster Interface formation of Mg2X (X = Si, Sn) in cellular Si infiltrated by Mg(Sn) alloys 1 Alexander M. Matz
- Poster Production of microcellular PMMA using the bead foaming technology 1 Mikel Mugica
- Poster Nanocellular PMMA with tunable cellular structure by changing the rheological behaviour of the polymer matrix. 1 Judith Martín de León
- Poster Production of thermoplastic polyurethane foams synthesized with different contents of hard segment and graphene nanoplatelets by the gas dissolution foaming process 1 Ph.D. Mercedes Santiago-Calvo
- Poster Surface functionalized filters for aluminum melt filtration 1 Dr.-Ing. Claudia Voigt
- Poster Nanocellular polymers based on PMMA/sepiolite nanocomposites: characterization of the mechanical behaviour 1 Victoria Bernardo
- Poster Impact resistant foams based on PP/POE blends 1 Ph.D. Santiago Munoz Pascual
- Poster Crosslinked open cell ethylene butyl acrylate copolymer (EBA) foams: properties and applications 1 Ph.D. Eduardo López
- Poster Influence of molecular weight in the solubility,diffusivity and the subsequent cellular structure of polystyrene foams 1 Ph.D. Alberto Ballesteros
- Poster Crushing strength measurement at reticulated ceramic foams ex situ and in situ CT analysis 1 Dr.-Ing. Claudia Voigt
- Poster Initiation of plateau region during compression test of porous metals with aligned unidirectional pores 1 Tomoya Tamai
- Poster Active meta-materials with adjustable pore size 1 Dr. Reza Hedayati
- Poster Polymeric foams 3D numerical mechanical modelling 1 Stefano Tagliabue
- Poster Characterisation of NiTi cellular materials fabricated by the powder-metallurgy spaceholder technique 1 Dr. Karl Dahm
- Poster Accurate separation of open cell metal foams using remote laser cutting technique 1 Robert Baumann
- Poster Generation of artificial foam structures and evaluation of their thermo-mechanical, flow and filtration characteristics (Poster) 1 Christoph Settgast
- Poster Surface modification of magnesium-based foams by Directed Plasma Nanosynthesis 1 Viviana Marcela Posada Pérez

General Topic P: Postersession
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The production of nanocellular polymers is a topic with increasing interest, due to the unique properties of these materials. Multiple polymer matrices have been chosen for this purpose, such as polyphenylsulfone, polycarbonate or polyetherimide. However, the most promising results have been obtained using polymethylmethacrylate (PMMA) as polymer matrix.

In order to change the cellular structure of nanocellular PMMA and therefore its final properties, different strategies have been followed. One approach is to use the heterogeneous nucleation mechanisms by adding nanoparticles or by using a nanostructured polymer blend. On the other hand, it has been proved that process parameters strongly affect the final cellular structure. Nevertheless, the effect of the rheological behavior of the polymer matrix is also a key parameter that has to be taken into account when evaluating the influence of the processing parameters in the cellular structure.

In this work, the effect of the rheological behavior of PMMA has been studied. Nanocellular PMMA has been produced by means of gas dissolution foaming process by using polymers with different viscosities. On the other hand, various processing conditions (saturation pressures and temperatures) have been tested. Finally, a relationship between the rheological behavior of the polymeric matrix and the density and cellular structure has been established allowing to control the final cellular structure by changing the properties of the solid matrix.

Speaker:
Judith Martín de León
University of Valladolid
Additional Authors:
  • Victoria Bernardo
    University of Valladolid
  • Prof. Dr. Miguel Ángel Rodríguez-Pérez
    University of Valladolid