期刊
POLYMERS
卷 9, 期 8, 页码 -出版社
MDPI AG
DOI: 10.3390/polym9080381
关键词
shape memory polymer; polymer foam; medical device
资金
- National Science Foundation Graduate Research Fellowship [1252521]
- National Institutes of Health/National Institute of Neurological Disorders and Stroke [U01-NS089692]
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.
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