• français
    • English
    français
  • Login
Help
View Item 
  •   Home
  • Institut de Mécanique et d’Ingénierie de Bordeaux (I2M)
  • View Item
  • Home
  • Institut de Mécanique et d’Ingénierie de Bordeaux (I2M)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Microcellular Foaming of Polymethylmethacrylate in a Batch Supercritical CO2 Process: Effect of Microstructure on Compression Behavior

Type
Articles dans des revues avec comité de lecture
Author
REGLERO RUIZ, Jose Antonio
247140 Laboratoire de Chimie des Polymères Organiques [LCPO]
VIOT, Philippe
164351 Institut de Mécanique et d'Ingénierie de Bordeaux [I2M]
DUMON, Michel
247140 Laboratoire de Chimie des Polymères Organiques [LCPO]

URI
http://hdl.handle.net/10985/8262
Date
2010
Journal
Journal of Applied Polymer Science

Abstract

Microcellular foaming of reinforced core/ shell Polymethylmethacrylate (PMMA) was carried out bymeans of supercritical CO2 in a single-step process. Samples were produced using a technique based on the saturation of the polymer under high pressure of CO2(300 bars,40 C), and cellular structure was controlled by varying the depressurization rate from 0.5 bar/s to 1.6 x10-2 bar/sleading to cell sizes from 1lm to 200l m, and densities from 0.8 to 1.0 g/cm3. It was found that the key parameter to control cell size was depressurization rate, and larger depressurization rates generated bigger cell sizes. On the other hand, variation of the density of the samples was not so considerable. Low rate compression tests were carried out, analyzing the dependence of mechanical parameters such as elastic modulus, yield stress and densification strain with cell size. Moreover, the calculation of the energy absorbed for each sample is presented, showing an optimum of energy absorption up to 50% of deformation in the micrometer cellular range (here at a cell size of about 5 µm). To conclude, a brief comparison between neat PMMA and the core/shell reinforced PMMA has been carried out, analyzing the effect of the core/shell particles in the foaming behavior and mechanical properties.

Files in this item

Name:
DUMAS_jofaps_viot_2010.pdf
Size:
2.265Mb
Format:
PDF
View/Open

Collections

  • Institut de Mécanique et d’Ingénierie de Bordeaux (I2M)

Related items

Showing items related by title, author, creator and subject.

  • Numerical simulation of the effect of adiabatic temperature increase in martensitic transformation of austenitic steels 
    ZAERA, Ramon; CASADO, Alvaro; RODRIGUEZ-MARTINEZ, José Antonio; RUSINEK, Alexis; PESCI, Raphaël; FERNANDEZ-SAEZ, José (2011)
    This work presents a constitutive model for metastable austenitic steels exhibiting Strain Induced Martensitic Transformation (SIMT). Based on the description of the kinetics of phase transformation proposed by Olson and ...
  • Experimental and numerical analysis on the martensitic transformation in AISI 304 steel sheets subjected to perforation by conical and hemispherical projectiles 
    RODRIGUEZ MARTINEZ, José Antonio; RUSINEK, Alexis; PESCI, Raphaël; ZAERA, Ramon (Elsevier, 2013)
    In this work, an experimental and numerical analysis of the martensitic transformation in AISI 304 steel sheets subjected to perforation by conical and hemispherical projectiles is conducted. Experiments are performed using ...
  • Thermo-mechanical behaviour of TRIP 1000 steel sheets subjected to low velocity perforation by conical projectiles at different temperatures 
    RODRIGUEZ MARTINEZ, José Antonio; PESCI, Raphaël; RUSINEK, Alexis; ARIAS, Angel; ZAERA, Ramon; PEDROCHE, David Arias (Elsevier, 2012)
    This paper presents and analyzes the behaviour of TRIP 1000 steel sheets subjected to low velocity perforation by conical projectiles. The relevance of this material resides in the potential transformation of retained ...
  • Induced drilling strains in glass fibre reinforced epoxy composites 
    NOBRE, Joao Paulo; STIFFEL, J.-H.; NAU, A.; OUTEIRO, José; BATISTA, Antonio; VAN PAEPEGEM, W.; SCHOLTES, B. (Elsevier, 2013)
    Residual strains induced by drilling of glass-fibre reinforced polymers (GFRP) were determined using a hybrid experimental-numerical methodology. Experimentally, a set of GFRP specimens were drilled under well-defined ...
  • Residual Stresses Induced by Dry and Cryogenic Cooling during Machining of AZ31B Magnesium Alloy 
    OUTEIRO, José; BATISTA, Antonio; MARQUES, M.J. (Trans Tech Publications, 2014)
    The major challenge of the Mg alloys has been their unsatisfactory corrosion resistance, which can be enhanced by improving the surface integrity. Cryogenic machining, where liquid nitrogen was used during machining, has ...

Browse

All SAMCommunities & CollectionsAuthorsIssue DateCenter / InstitutionThis CollectionAuthorsIssue DateCenter / Institution

Newsletter

Latest newsletterPrevious newsletters

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales