Functionalized recyclable polymer homopolymer and preparation method and application thereof

The invention discloses a functionalized recyclable polymer homopolymer and a preparation method and application thereof. The preparation method comprises the following steps: uniformly mixing a lactone monomer with an initiator, then adding an organic magnesium catalyst into the formed mixture, and carrying out a reaction so as to obtain the functionalized recyclable high-molecular homopolymer. Compared with conventional materials, the homopolymer has the advantage of capability of being completely recycled; and the recycled monomer can be directly re-polymerized to prepare the same polymer material, so the powerful advantage of chemical cycle is obtained, and a solution is provided for solving the problem of plastic treatment. Meanwhile, the homopolymer with a functionalized tail end hasa wide application scope and excellent thermal properties, and meets the requirements of different fields. Compared with the prior art, the method is simple to operate; the catalyst is a commercial compound and is wide in so