Photopolymerized thiol-ene systems as shape memory polymers

Add time:09/02/2019    Source:sciencedirect.com

In this study we introduce the use of thiol-ene photopolymers as shape memory polymer systems. The thiol-ene polymer networks are compared to a commonly utilized acrylic shape memory polymer and shown to have significantly improved properties for two different thiol-ene based polymer formulations. Using thermomechanical and mechanical analysis, we demonstrate that thiol-ene based shape memory polymer systems have comparable thermomechanical properties while also exhibiting a number of advantageous properties due to the thiol-ene polymerization mechanism which results in the formation of a homogeneous polymer network with low shrinkage stress and negligible oxygen inhibition. The resulting thiol-ene shape memory polymer systems are tough and flexible as compared to the acrylic counterparts. The polymers evaluated in this study were engineered to have a glass transition temperature between 30 and 40 °C, exhibited free strain recovery of greater than 96% and constrained stress recovery of 100%. The thiol-ene polymers exhibited excellent shape fixity and a rapid and distinct shape memory actuation response.

We also recommend Trading Suppliers and Manufacturers of THIOL DIETHYLENE GLYCOL DIACRYLATE (cas 19721-37-0). Pls Click Website Link as below: cas 19721-37-0 suppliers

Prev:New allyl-functional catalytic comonomers for sequential thiol-Michael and radical thiol-ene reactions
Next:Elucidating the mechanism of chain termination switching in the picromycin (cas 19721-56-3)/methymycin polyketide synthase)