Abstract

Multiple shape memory polymers can memory multiple shapes and they are useful in many fields. In this work, poly(methyl methacrylate)/poly(dimethylsiloxane-b-ethylene oxide) methyl terminated (PMMA/PDMS-PEO) semi-interpenetrating polymeric networks (semi-IPNs) with broadened glass transition were prepared through ultraviolet-initiated radical polymerization. These novel semi-IPNs can provide many transition temperatures for multiple-step shape fixation and recovery and thus can realized dual, triple, and quadruple shape memory effects in a shape memory cycle.

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