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

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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), MA. 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.

Info:

Periodical:

Defect and Diffusion Forum (Volumes 326-328)

Edited by:

Prof. Andreas Öchsner, Prof. Graeme E. Murch, Ali Shokuhfar and Prof. João M.P.Q. Delgado

Pages:

434-439

DOI:

10.4028/www.scientific.net/DDF.326-328.434

Citation:

J. Pinto et al., "Solid Skin Characterization of PMMA/MAM Foams Fabricated by Gas Dissolution Foaming over a Range of Pressures", Defect and Diffusion Forum, Vols. 326-328, pp. 434-439, 2012

Online since:

April 2012

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Price:

$38.00

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