By a News Reporter-Staff News Editor at Physics Week -- Fresh data on Macromolecular Chemistry and Physics are presented in a new report. According to news reporting out of Sakura, Japan, by VerticalNews editors, research stated, "Polymer-clay nanocomposite (P-NC) microspheres are synthesized through in situ free-radical polymerization in aqueous media without the use of surfactants. Uniform aqueous dispersions of P-NC microspheres without flocculation/precipitation are obtained for five types of (co)polymers with different hydrophilic/hydrophobic natures, in which the exfoliated clay platelets play an important role as crosslinkers and stabilizers in water."
Our news journalists obtained a quote from the research from the Kawamura Institute of Chemical Research, "The sol-gel boundary, transparency of the aqueous dispersion, microsphere particle size, etc. vary depending on the compositions and polymerization methods. Aqueous dispersions of P-NC microspheres with a well-defined lower critical solution temperature (LCST)-type thermosensitive transition are obtained by using N-isopropylacrylamide (NIPA), 2-methoxyethylacrylate (MEA), and N,N-dimethylacrylamide (DMAA) as the (co)monomers. In the case of P-NC microspheres consisting of inorganic clay and NIPA-DMAA or MEA-DMAA copolymers, the LCST is controlled over a wide range, particularly depending on the DMAA content."
According to the news editors, the research concluded: "The P-NC microspheres applied within double-layer glass plates are examined as reversible and efficient thermosensitive optical shutters.
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For more information on this research see: Polymer-Clay Nanocomposite Microspheres and their Thermosensitive Characteristics. Macromolecular Chemistry and Physics, 2014;215(3):295-305. Macromolecular Chemistry and Physics can be contacted at: Wiley-V C H Verlag Gmbh, Boschstrasse 12, D-69469 Weinheim, Germany. (Wiley-Blackwell - www.wiley.com/; Macromolecular Chemistry and Physics - onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-3935)
Our news journalists report that additional information may be obtained by contacting K. Haraguchi, Kawamura Inst Chem Res, Mat Chem Lab, Sakura, Chiba 2850078, Japan.
Keywords for this news article include: Asia, Japan, Sakura, Macromolecular Chemistry and Physics
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