Preparation of skinless polymer foam with supercritical carbon dioxide and its application to a photoinduced hydrogen evolution system

Skinless polymer foam was prepared by treating poly(methyl methacrylate) (PMMA) with supercritical carbon dioxide (scCO2). The film was immersed in scCO2 with ethanol to nucleate, and then incubated in a hot water bath to induce nuclear growth and to prepare skinless PMMA foam. The obtained polymer...

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Bibliographic Details
Published inPolymer (Guilford) Vol. 49; no. 6; pp. 1611 - 1619
Main Authors Morisaki, M., Ito, T., Hayvali, M., Tabata, I., Hisada, K., Hori, T.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 17.03.2008
Elsevier
Subjects
Applied sciences
Cellular
Exact sciences and technology
Forms of application and semi-finished materials
Hydrogen evolution
Organic polymers
Physicochemistry of polymers
Polymer industry, paints, wood
Properties and characterization
Skinless foam
Special properties (catalyst, reagent or carrier)
Supercritical fluid
Technology of polymers
Supercritical fluid
Skinless foam
Hydrogen evolution
Immersion method
Cell structure
Ethanol
Photocatalysis
Carbon dioxide
Methyl methacrylate polymer
Experimental study
Cellular plastic
Hot water
Mixed solvent
Porphyrin
Foaming process
Morphology
Visible radiation
Supercritical solvent
Kinetics
Manufacturing
Plastics
Catalyst activity
Hydrogen production
Catalyst support
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Summary:Skinless polymer foam was prepared by treating poly(methyl methacrylate) (PMMA) with supercritical carbon dioxide (scCO2). The film was immersed in scCO2 with ethanol to nucleate, and then incubated in a hot water bath to induce nuclear growth and to prepare skinless PMMA foam. The obtained polymer foam had a low density and cells were connected to each other to make channels through the skin layer. Low molecular weight PMMA formed skinless foam with larger cells through expansion. PMMA film containing tin meso-tetraphenyl porphyrin was also foamed with same procedure and the foam was used for photoinduced hydrogen evolution. A larger amount of hydrogen evolved from the photocatalyst on the skinless PMMA foam in comparison with the foam with skin. Enlargement of effective surface area of solid support and light scattering within the foam could enhance turnover number (TON) of photocatalyst.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2008.01.049