Solid Skin Characterization of PMMA/MAM Foams Fabricated by Gas Dissolution Foaming over a Range of Pressures

Abstract : A new model for solid skin formation on submicrocellular foams based on PMMA is presented. Structural foams has been produced by the solid state foaming technique using as precursor material a blend of poly(methyl methacrylate) PMMA and a triblock copolymer [poly(methyl methacrylate)-block poly(butyl acrylate)-block poly(methyl methacrylate), MAM]. An analysis on the skin thickness and densification has been carried based on x-ray high resolution radiography. The obtained results have been related to the fabrication parameters, i.e. MAM content of the blend and foaming pressure, and provide us a new vision about the processes that control the formation of a solid unfoamed, or partially unfoamed, skin in these materials.
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https://hal.archives-ouvertes.fr/hal-00817188
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Submitted on : Wednesday, April 24, 2013 - 8:52:03 AM
Last modification on : Thursday, January 11, 2018 - 6:28:10 AM

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Javier Pinto, Samuel Pardo, E. Solorzano, M. A. Rodriguez-Perez, Michel Dumon, et al.. Solid Skin Characterization of PMMA/MAM Foams Fabricated by Gas Dissolution Foaming over a Range of Pressures. Ochsner, A; Murch, GE; Shokuhfar, A; Delgado, JMPQ. DIFFUSION IN SOLIDS AND LIQUIDS VII, TRANS TECH PUBLICATIONS LTD, LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND, Vol 326-328, pp 434-439, 2012, Book Series: Defect and Diffusion Forum, ISSN 1012-0386. ⟨10.4028/www.scientific.net/DDF.326-328.434⟩. ⟨hal-00817188⟩

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