| 초록 |
Many natural or synthetic polymer hydrogels have attracted as primary materials in diverse fields, like drug delivery system, artificial skin and muscle, tendons and cartilage, corneal implants and contact lenses. Especially, attention to hydrogel systems crosslinked by gamma-ray irradiation has been increased. The gamma-ray irradiation method has merits, such as relatively simple manipulation without need of any extra agents for polymerization and crosslinking, and easy control of gamma irradiance. By using gamma-ray irradiation techniques, we prepared hydrogel actuator system with bilayer structure, which enable mechanical response to temperature. To evaluate the feasibility as soft actuators, the gel fraction, swelling kinetics, compressive strength, thermally responsive swelling-deswelling behavior and bending properties of hydrogels were determined. |
