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- W2766267216 abstract "Conduits currently used to reconstruct the right ventricular outflow tract (RVOT) have no growth potential and require reoperations, resulting in an increased level of morbidity and mortality. This work investigates the effect of electrospinning parameters on the mechanical properties and biocompatibility of bioresorbable tubular scaffolds, as part of a programme to develop a tissue-engineered valved tube for RVOT replacement. Electrospinning was used to develop tubular scaffolds of polydioxanone, with the experimental parameters systematically varied. Three electrospinning parameters (volume of liquid, flow rate, and speed of mandrel rotation) were investigated, and their effects on the mechanical properties and cellular response of the scaffolds were analysed using uniaxial tensile tests, cell viability and cytotoxicity assays. Mechanical properties were compared to those of the native RVOT reported in the literature. Increasing the mandrel rotation speed tended to increase fibre alignment slightly, and an increase from 50 to 500 rpm led to more profound rises in the stress at failure and Young's modulus. An increase in flow rate also increased the rigidity of the tubes. Cell viability and cytotoxicity assays showed all the tubes produced to have excellent biocompatibility. Through variation of the processing parameters, it is possible to tune mechanical properties of medical-grade polymer tubes over a wide range. Electrospinning therefore offers great promise in the development of scaffolds to match the properties of the native RVOT, paving the way to a future bioresorbable device to replace the RVOT in children." @default.
- W2766267216 created "2017-11-10" @default.
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- W2766267216 date "2018-01-29" @default.
- W2766267216 modified "2023-10-16" @default.
- W2766267216 title "The influence of electrospinning parameters on polydioxanone scaffold properties" @default.
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- W2766267216 doi "https://doi.org/10.1088/2057-1976/aa979f" @default.
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