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Title: Shape memory polymers

New shape memory polymer compositions, methods for synthesizing new shape memory polymers, and apparatus comprising an actuator and a shape memory polymer wherein the shape memory polymer comprises at least a portion of the actuator. A shape memory polymer comprising a polymer composition which physically forms a network structure wherein the polymer composition has shape-memory behavior and can be formed into a permanent primary shape, re-formed into a stable secondary shape, and controllably actuated to recover the permanent primary shape. Polymers have optimal aliphatic network structures due to minimization of dangling chains by using monomers that are symmetrical and that have matching amine and hydroxl groups providing polymers and polymer foams with clarity, tight (narrow temperature range) single transitions, and high shape recovery and recovery force that are especially useful for implanting in the human body.
Inventors:
;
Issue Date:
OSTI Identifier:
1377883
Assignee:
Lawrence Livermore National Security, LLC LLNL
Patent Number(s):
9,745,402
Application Number:
13/893,033
Contract Number:
AC52-07NA27344
Resource Relation:
Patent File Date: 2013 May 13
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 60 APPLIED LIFE SCIENCES

Works referenced in this record:

Shape memory polymers based on uniform aliphatic urethane networks
journal, January 2007
  • Wilson, T. S.; Bearinger, J. P.; Herberg, J. L.
  • Journal of Applied Polymer Science, Vol. 106, Issue 1, p. 540-551
  • DOI: 10.1002/app.26593

Shape-Memory Polymers
journal, June 2002