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Poly(ε-caprolactone) and Poly(ε-caprolactone)-polyvinylpyrrolidone-iodine Blends as Ureteral Biomaterials: Characterisation of Mechanical and Surface Properties, Degradation and Resistance to Encrustation in Vitro by David S Jones; Jasmina Djokic; Colin P McCoy; Sean P Gorman is a Engineering article available to read on EtoBox.

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This study describes the physicochemical properties and in vitro resistance to encrustation of solvent cast films composed of either poly(epsilon-caprolactone) (PCL), prepared using different ratios of high (50,000) to low (4000) (molecular weight) m.wt., or blends of PCL and the polymeric antimicrobial complex, poly(vinylpyrrolidone)-iodine (PVP-I). The incorporation of PVP-I offered antimicrobial activity to the biomaterials. Films were characterised in terms of mechanical (tensile analysis, dynamic mechanical thermal analysis) and surface properties (dynamic contact angle analysis, scanning electron microscopy), whereas degradation (at 37 degrees C in PBS at pH 7.4) was determined gravimetrically. The resistance of the films to encrustation was evaluated using an in vitro encrustation model. Reductions in the ratio of high:low-m.wt. PCL significantly reduced the ultimate tensile strength, % elongation at break and the advancing contact angle of the films. These effects were attributed to alterations in the amorphous content and the more hydrophilic nature of the films. Conversely, there were no alterations in Young's modulus, the viscoelastic properties and glass-transition temp

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Author

David S Jones; Jasmina Djokic; Colin P McCoy; Sean P Gorman

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0142-9612)

Published

2002

Language

EN

Field

Engineering (Physical Sciences)