Multiple shape memory polymers for self-deployable device

In this study, novel multiple shape memory polymers (MSMPs) are successfully prepared using the facile, inexpensive, and effective approach of multistage polymerization procedures. The resultant samples comprising three copolymers with well-separated glass transition temperatures can change their shapes in a pre-defined way over a broad temperature range with almost full recovery of all temporary shapes. We anticipate that a similar approach can be broadly applicable to other stimuli-responsive materials for the design and fabrication of diverse triple- or multiple-SMPs.