Modulus-Tunable 3D Printed Hydrogels Controlled by Thermal Stiffening Behavior
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초록
내용
In recent years, there is a high interest to study materials with a stimuli-tunable mechanical properties. Hydrogels, particularly, are the attractive candidate to be studied because it contains a high amount of water, which allows mechanical properties control through external stimuli. In this study, a hydrogel is made by a combination of hydrophobic association, micelles, and ionic bonding. The hydrophobic association allows for a fine mechanical tuning through temperature control. At higher temperature, there is a sharp stiffness change from rubbery to glassy material, induced by the transition hydrophilic to hydrophobic materials that leads to a phase separation. This property is attractive for the development of biomimetic materials, and safety equipment which requires both elastic and stiff property at room and high temperature.