A star carrier fixing carbon dioxide and a preparation method and preparation method of membrane materials

The present invention discloses a carbon dioxide-immobilized carrier star, characterized in that: the CD as the core, PGED of polymer arms. In atom transfer radical polymerization constructed, the method of polymerization reaction smoothly, is easy to control, and may be prepared according to need stellate, different numbers of arms, arms of different length, different molecular weights, CO2 immobilized carrier narrow molecular weight distribution. CO2-immobilized carrier obtained good storage stability, which CO2 is amino arm facilitate the transfer of the carrier material can thus be used as a separation membrane, having selective permeation properties of CO2, permselectivity of high CO2 / CH4 system, biogas purification purification technology has potential applications.