|About this Abstract
||2010 TMS Annual Meeting & Exhibition
||Processing Materials for Properties
||Radiation Crosslinked Polyacrylates with Shape Memory
||Walter Voit, Taylor Ware, Ken Gall
|On-Site Speaker (Planned)
Shape-memory polymers (SMPs) are active smart materials with tunable stiffness changes at specific, tailored temperatures. Thermoplastic SMPs lose “memory” properties near melt temperatures and have large residual strains, while network (thermoset) SMPs fully recover, limiting device disfiguration. However the use of thermoset SMPs has been limited in mass-manufacture and commodity applications because low-cost plastics processing techniques like injection molding and blow molding are not possible with network polymers. In this study of thermoset SMPs, beyond adjusting the glass transition temperature (Tg) between 28 and 60 °C and tuning the recoverable force between 0.5 and 13 MPa, a novel manufacturing process, Mnemosynation, is described. The customizable mechanical properties of traditional SMP are coupled with traditional plastic processing techniques to enable a new generation of mass producible plastic products with thermosetting shape-memory properties: low residual strains, tunable recoverable force and adjustable Tg.
||Definite: A CD-only volume