Adhesion-controllable hydrogel and preparation method and magnetic driving adhesion method thereof

Abstract

The invention discloses adhesion-controllable hydrogel, a preparation method thereof and a magnetic driving adhesion method. The preparation method comprises the following steps: transferring an AAPM magnetic gel solution containing a magnetic material to a glass plate and preparing a glass plate polymerization mold; injecting the P (AAm-co-AAc) gel solution into a mold, and performing thermal polymerization to obtain a hydrogel film; after the thin film is swelled, dome-shaped protrusions are formed on the magnetic gel part, and the adhesion controllable hydrogel of a bistable structure is prepared. The magnetic gel part of the hydrogel is used for adhering an object, and the magnetic gel part is magnetically driven to jump to separate the object, so that controllable adhesion is realized. The adhesion-controllable hydrogel disclosed by the invention adopts a bistable structure, and the position or distribution of a magnetic part is regulated and controlled by utilizing a magnetic material and changing a magnetic field, so that accurate control on the behavior of the hydrogel is realized. The magnetic drive has the advantages of non-contact, remote control and high response speed, and controllable adhesion of hydrogel can be realized.

Images