Poly(aryl piperidinium) copolymer ionomer grafted with propargyl group, cross-linked anion-exchange membrane, and method for preparing same

A method for preparing a poly(aryl piperidinium) copolymer ionomer grafted with a propargyl group, comprising:

• (I) a step dissolving (a) two or more different compounds represented by the following structural formulas as monomers, and (b) 1-methyl-4-piperidone in an organic solvent to form a solution;
• (R=H or CH3),
• (R=H, OH or a C1-5 alkoxy),
• (n is an integer from 1 to 10)
• (II) a step of slowly adding a strong acid catalyst to the solution, and stirring and reacting the mixture to obtain a viscous solution;
• (III) a step of precipitating, washing and drying the viscous solution to obtain a solid polymer;
• (IV) a step of adding potassium carbonate, propargyl bromide, and an excess amount of halomethane to a polymer solution in which the solid polymer is dissolved in an organic solvent and conducting reaction to form a quaternary piperidinium salt grafted with a propargyl group;
• and
• (V) a step of precipitating, washing and drying the mixed solution.