Restoration Temperature Control through Glass Transition Temperature Modulation of Shape Memory Polymer for Thermally Switchable Adhesive.

ABSTRACT: Shape memory polymers (SMPs) undergo changes between arbitrary shapes and programmed shapes upon exposure to specific stimulus, allowing them to restore their original shape. All kinds of external stimuli have a threshold to change the shape of the SMP. Especially, for the thermal type SMP, the critical temperature for shape restoration is typically near the glass transition temperature (T_g). In this study, the controllability of the restoration temperature is analyzed by adjusting the T_g of the polymer using Norland Optical Adhesive 63, which can be cured with UV irradiation. By varying the ambient temperature from 20 to 120 °C during UV exposure, T_g changes ranging from 35.84 to 50.50 °C are obtained, with corresponding changes in restoration temperature.

SUBMITTER: Park HJ 

PROVIDER: S-EPMC11234400 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature