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Methods for improved flexural mechanical properties of 3D-plotted PCL-based scaffolds for heart valve tissue engineeringRagaert, Kim ...While porous PCL scaffolds can be manufactured trough 3D plotting with high regularity and reproducibility, it has been a challenge in previous research to mimick the highly flexible behaviour of the ... natural valve leaflets. In this study, an exploration is made of two separate approaches for the improved flexibility of 3D plotted poly--caprolactone (PCL) scaffolds for heart valve leaflets. Firstly, the scaffold geometry is radically altered towards a very open woven-like structure, by adequately adapting the processing parameters during 3D plotting. Secondly, the base material itself is altered by blending a fraction of low-molecular weight poly-ethylene-oxide (PEO) in the PCL polymer. Scaffolds are 3D plotted for both series and their flexibility is evaluated in an uni-axial indentation experiment. The results are compared to those of the natural valve tissue and it is found that both methodologies result in the desired reduction of the stiffness of the scaffold.Source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Vol. 59, no. 11, Nov. 2013, str. 669-676, SI 136)Type of material - article, component partPublish date - 2013Language - englishCOBISS.SI-ID - 13219611
Author
Ragaert, Kim |
De Somer, Filip |
Van de Velde, Stieven |
Degrieck, Joris |
Cardon, Ludwig
Topics
ogrodje |
mehanske lastnosti |
upogibanje |
srčne zaklopke |
tkivni inženiring |
3D-tiskanje |
scaffolds |
mechanical properties |
flexure |
heart valves |
tissue engineering |
3D plotting
source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Vol. 59, no. 11, Nov. 2013, str. 669-676, SI 136)
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Ragaert, Kim | |
De Somer, Filip | |
Van de Velde, Stieven | |
Degrieck, Joris | |
Cardon, Ludwig |
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