Shape memory polyurethane-urea foams with improved toughness

Alexandra D. Easley, Mary Beth Browning Monroe, Sayyeda M. Hasan, Andrew C. Weems, Jane Frederick, Duncan J. Maitland

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Current vascular aneurysm treatments often require either highly invasive strategy to surgically occlude an aneurysm or endovascular occlusion via metal coils. While endovascular coils are safer, they have limited efficacy. Endovascular coils that are integrated with shape memory polymer (SMP) foams have the potential to improve occlusion and reduce coil risks; however, the mechanical performance and limited homogeneity of SMP foams can hinder their effective use. To address this issue, SMP foams are synthesized using the monomer diethanolamine (DEA) in place of triethanolamine (TEA) to provide improved mechanical properties for medical device applications. Mechanical testing and micro-fracture analysis were performed on DEA and TEA foams. DEA foams show improved toughness and reduced micro-fractures compared to the control. This work presents the utility of DEA in SMP synthesis to enable the potential production of safer aneurysm treatment.

Original languageEnglish (US)
Article number47268
JournalJournal of Applied Polymer Science
Volume136
Issue number14
DOIs
StatePublished - Apr 10 2019

Keywords

  • polyurethane
  • shape memory polymer foam

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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