Free recovery effects of shape-memory polymers for cardiovascular stents

Conference Paper

The shape-memory effect was examined in polymer stents intended for cardiovascular applications. Four polymer networks were synthesized from polyethylene glycol) dimethacrylate and tert-butyl acrylate with 10 wt% and 20 wt% crosslinker, and with glass transition temperatures (Tg) of 52°C and 55°C. Solid and 50% porous stents were manufactured and tested for free strain recoverability at temperatures at or just above 37°C. Stents with lower glass transition temperatures and a higher degree of crosslinking recovered faster than their counterparts. Lower deformation (packaging) temperatures and higher recovery temperatures induce more rapid recovery. The presence of geometrical features, such as pores, initiated recovery sooner, but had negligible influence on overall recovery. © 2006 Materials Research Society.

Full Text

Duke Authors

Cited Authors

  • Yakacki, CM; Shandas, R; Lanning, C; Gall, K

Published Date

  • January 1, 2005

Published In

Volume / Issue

  • 898 /

Start / End Page

  • 184 - 191

International Standard Serial Number (ISSN)

  • 0272-9172

International Standard Book Number 10 (ISBN-10)

  • 1558998535

International Standard Book Number 13 (ISBN-13)

  • 9781558998537

Digital Object Identifier (DOI)

  • 10.1557/proc-0898-l15-01

Citation Source

  • Scopus