| Surface activity of myristic acid in the poly(methyl methacrylate)/supercritical carbon dioxide system. | |
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MedLine Citation:
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PMID: 15248701 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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To confirm the surface activity of myristic acid in the dispersion polymerization of vinyl monomers in scCO2, the interfacial tension (IFT) at the polymer/supercritical carbon dioxide (scCO2) interface has been measured. For the IFT measurements, a high-pressure pendant drop apparatus was constructed. The IFT data was obtained by the axisymmetric drop shape analysis of melt polymer droplets formed at the tip of a capillary. The reliability of the apparatus was confirmed by measuring the IFT of polystyrene (PS)/scCO2 and polypropylene (PP)/CO2 systems. The IFT of the poly(methyl methacrylate) (PMMA)/scCO2 system with and without myristic acid was also measured. The IFT decreased on addition of myristic acid. The magnitude of the IFT depression due to the myristic acid was comparable to that of PS/scCO2 systems with the block copolymer surfactant, PS-b-poly(fluorooctyl acrylate). The surface activity of the myristic acid was confirmed by the decrease of IFT. |
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Authors:
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Katsuto Otake; Masanori Kobayashi; Yoshinobu Ozaki; Satoshi Yoda; Yoshihiro Takebayashi; Tsutomu Sugeta; Noriaki Nakazawa; Hideki Sakai; Masahiko Abe |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Langmuir : the ACS journal of surfaces and colloids Volume: 20 ISSN: 0743-7463 ISO Abbreviation: Langmuir Publication Date: 2004 Jul |
Date Detail:
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Created Date: 2004-07-13 Completed Date: 2006-06-07 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9882736 Medline TA: Langmuir Country: United States |
Other Details:
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Languages: eng Pagination: 6182-6 Citation Subset: - |
Copyright Information:
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Copyright 2004 American Chemical Society |
Affiliation:
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National Institute of Advanced Industrial Science and Technology, Nanotechnology Research Institute, Higashi 1-1-1, Tsukuba Central 5, Tsukuba, Ibaraki 305-8565, Japan. katsuto-otake@aist.go.jp |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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