By a News Reporter-Staff News Editor at Life Science Weekly -- Data detailed on Oxides have been presented. According to news reporting originating in Tokyo, Japan, by NewsRx journalists, research stated, "Liquid and supercritical carbon dioxide (LCO2, SCCO2) have been used as a porogen to swell self-organized nano-structure of an amphiphilic side-chain type liquid crystalline PEO-b-PMA(Az) copolymer. Carbon dioxide interacts with the hydrophilic PEO domain rather than the PMA matrix."
The news reporters obtained a quote from the research from Tokyo Metropolitan University, "The preferential interactions of PEO component with carbon dioxide result in a solvent-induced surface topology changes and the generation of a nano-porous template. The area density of the nano-pores is identical to that of the original copolymer film while keeping the hexagonally packed PEO nano-scale organization. Since the process is based on the gases diffusion on solid surfaces under controlled temperature and since neither polymer block is fundamentally altered by the sorption effect, the process is fully reversible. The supercritical condition of CO2 treatment gives rise to the highest expansion of pre-patterned PEO cylinders and consecutively induces the retardation of PEO crystallization."
According to the news reporters, the research concluded: "This versatile thermo-diffuso approach would be applied to a wide variety of pre-patterned copolymers systems for nano-templating applications requiring nano-scale features sizes and/or area feature densities."
For more information on this research see: Carbon dioxide as a porogen on self-organized nano-structure of amphiphilic side-chain type liquid crystalline di-block copolymers. Journal of Thermal Analysis and Calorimetry, 2013;113(3):1565-1576. Journal of Thermal Analysis and Calorimetry can be contacted at: Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands. (Springer - www.springer.com; Journal of Thermal Analysis and Calorimetry - www.springerlink.com/content/1388-6150/)
Our news correspondents report that additional information may be obtained by contacting S.A.E. Boyer, Tokyo Metropolitan University, Grad Sch Urban Environm Sci, Tokyo 158, Japan. Additional authors for this research include C. Iwamoto and H. Yoshida (see also Oxides).
Keywords for this news article include: Asia, Tokyo, Japan, Chemicals, Chemistry, Carbon Dioxide, Inorganic Carbon Compounds
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