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- Title
Increased X-ray Visualization of Shape Memory Polymer Foams by Chemical Incorporation of Iodine Motifs.
- Authors
Nash, Landon D.; Monroe, Mary Beth Browning; Yong-Hong Ding; Ezell, Kendal P.; Boyle, Anthony J.; Kadirvel, Ramanathan; Kallmes, David F.; Maitland, Duncan J.
- Abstract
Shape memory polymers can be programmed into a secondary geometry and recovered to their primary geometry with the application of a controlled stimulus. Porous shape memory polymer foam scaffolds that respond to body temperature show particular promise for embolic medical applications. A limitation for the minimally invasive delivery of these materials is an inherent lack of X-ray contrast. In this work, a triiodobenzene containing a monomer was incorporated into a shape memory polymer foam material system to chemically impart X-ray visibility and increase material toughness. Composition and process changes enabled further control over material density and thermomechanical properties. The proposed material system demonstrates a wide range of tailorable functional properties for the design of embolic medical devices, including X-ray visibility, expansion rate, and porosity. Enhanced visualization of these materials can improve the acute performance of medical devices used to treat vascular malformations, and the material porosity provides a healing scaffold for durable occlusion.
- Subjects
SHAPE memory polymers; BENZENE; MONOMERS; IODINE; TISSUE scaffolds
- Publication
Polymers (20734360), 2017, Vol 9, Issue 8, p381
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym9080381