Shape Memory Polymers

Shape memory polymers (SMPS) are thermo-responsive materials which switch from a temporary shape to a permanent shape by heating above its transition temperature. The development of this shape memory polymers enables high recovery stress levels as well as novel functions such as electrical conductivity, magnetism, and biofunctionality. Dr. Grunlan’s lab is working on developing shape memory polymers with silicon-containing segments in order to achieve excellent mechanical properties such as shape fixity, and shape recovery. SMPs were prepared by photocuring diacrylated PCL_n-block-PDMS₃₇-block-PCL_n macromers with tailored PDMS [polydimethylsiloxane] and PCL [poly(ε-caprolactone)] segment lengths. Both solid SMPs and shape memory foams are being studied.

In the biomedical field, shape memory polymers may permit the development of superior interventional devices. This technology could help my grandfather potentially someday. Currently, my grandfather suffers from reoccurring blood clots. The SMPs can be used for blood clot removal by forming a self-expanding stent.

 

http://link.springer.com/chapter/10.1007%2F978-3-642-12359-7_28?LI=true#