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Issue 12, 2017
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Electrospinning and mechanical properties of P(TMC-co-LLA) elastomers

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Abstract

P(TMC-co-LLA) elastomers have shown great potential for various biomaterial and tissue engineering applications. This study systematically investigated properties key to such applications. Three P(TMC-co-LLA) copolymers with 9 to 32 mol% TMC were synthesised and processed into 3D fibrous scaffolds using solution electrospinning. A range of fiber diameters (0.5–5.9 μm) and pore sizes (3.5–19.8 μm) were achieved simply by adjusting the voltage, collector distance and feed rate during electrospinning. The morphological features of the electrospun scaffolds were affected by the copolymer composition such that the average fiber diameters decreased in the order of P(TMC20-co-LLA80) > P(TMC32-co-LLA68) > P(TMC9-co-LLA91), which suggests inherent properties of the copolymers influence the electrospinning process. In addition, the specific parameter combinations applied during electrospinning did not affect the thermal properties of the scaffolds, however, it was confirmed that rapid solidification of the fibers occurred during electrospinning which lowered the inherent crystallinity and caused deviations of the thermodynamic state from equilibrium. Mechanical testing revealed that the Young's modulus and ultimate tensile strength were dependent on the morphology of the fibrous scaffolds, while in contrast, the ductility and toughness were strongly composition dependent with P(TMC20-co-LLA80) scaffolds displaying lower ductility and toughness than P(TMC32-co-LLA68) scaffolds.

Graphical abstract: Electrospinning and mechanical properties of P(TMC-co-LLA) elastomers

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Publication details

The article was received on 12 Jan 2017, accepted on 27 Feb 2017 and first published on 07 Mar 2017


Article type: Paper
DOI: 10.1039/C7TB00137A
Citation: J. Mater. Chem. B, 2017,5, 2263-2272
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    Electrospinning and mechanical properties of P(TMC-co-LLA) elastomers

    J. Cork, A. K. Whittaker, J. J. Cooper-White and L. Grøndahl, J. Mater. Chem. B, 2017, 5, 2263
    DOI: 10.1039/C7TB00137A

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