Abstract
In this study, a polydioxanone (PDO) and poly(L-lactic acid) (PLLA) sheath-core biphasic monofilament was designed to develop an esophageal stent with improved mechanical properties and controlled biodegradability. The radial force of PDO/PLLA sheath-core stent was 10.24 N, while that of PDO stent was 5.64 N. Deteriorations of tensile strength, elastic modulus and elongation during degradation test were also delayed on PDO/PLLA group. Hyaluronic acid–dopamine conjugate and BaSO4/PDO conjugate coating layers provided improved tissue adhesion strength and reasonable X-ray contrast, respectively. Taken all together, the sheath-core filaments with tissue adhesive and radiopaque properties will be useful in designing esophageal stents.
| Original language | English |
|---|---|
| Pages (from-to) | 396-406 |
| Number of pages | 11 |
| Journal | Journal of Industrial and Engineering Chemistry |
| Volume | 67 |
| DOIs | |
| State | Published - 25 Nov 2018 |
| Externally published | Yes |
Keywords
- Esophageal stent
- Poly(L-lactic acid)
- Polydioxanone
- Sheath-core monofilament
- Surface treatments
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