Post polymerization cure shape memory polymers
AssigneeLawrence Livermore National Security, LLC
InventorsThomas S. Wilson, Michael Keith Hearon, II, Jane P. Bearinger
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Abstract
This invention relates to chemical polymer compositions, methods of synthesis, and fabrication methods for devices regarding polymers capable of displaying shape memory behavior (SMPs) and which can first be polymerized to a linear or branched polymeric structure, having thermoplastic properties, subsequently processed into a device through processes typical of polymer melts, solutions, and dispersions and then crossed linked to a shape memory thermoset polymer retaining the processed shape.
Claims15
A method of making a polymeric article(s) having shape memory properties comprising:
- forming a thermoplastic linear or branched linear polymer having shape memory properties, processing the polymer into a shape,
- curing or crosslinking the polymer to convert it to a thermoset polymer is formed that has the desired article shape and form as a permanent shape and that may be made to take a stable secondary shape through the application of stress or strain at a temperature above its actuation transition, then held at the secondary shape while cooled to a temperature below its transition temperature.
Dependencies are inferred from the claim text.