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Showing 1–2 of 2 results
Advanced filters: Author: Katsuhiro Horata Clear advanced filters

  • Two new urea-containing polysilsesquioxane-based membranes were prepared. One of these membranes demonstrated impressive performance, achieving a CO₂ permeance of 4000 GPU and a CO₂/N₂ permselectivity of 13. A prediction model was generated using machine learning based on previous data to predict membrane performance. The model exhibited potential for membrane design, despite limited accuracy owing to the small number of explanatory variables used.

    • Yusuke Kanematsu
    • Katsuhiro Horata
    • Joji Ohshita
    ResearchOpen Access
    Polymer Journal
    P: 1-12

  • Amine-containing polysilsesquioxane (PSQ) membranes were studied with regard to their CO2 separation ability. PSQ membranes were prepared by using amine-containing monomers, bis(triethoxysilylpropyl)amine (BTESPA), (aminopropyl)triethoxysilane (APTES), and (aminoethylaminopropyl)triethoxysilane (AEAPTES). The CO2 permeances of the membranes prepared by 1:1 copolymerization with bis(triethoxysilyl)ethane increased in the order of AEAPTES-derived membranes < APTES-derived membranes < BTESPA-derived membranes, and their CO2/N2 permselectivities decreased in the same order. Copolymerization under acidic conditions resulted in the formation of ammonium-containing membranes with improved CO2 permeances and acceptable CO2/N2 permselectivities.

    • Joji Ohshita
    • Takatoshi Okonogi
    • Toshinori Tsuru
    Research
    Polymer Journal
    Volume: 54, P: 875-882