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Studies of P(L/D)LA 96/4 non-woven scaffolds and fibres; properties, wettability and cell spreading before and after intrusive treatment methods

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Abstract

Poly(L/D)lactide 96/4 fibres with diameters of 50 and 80 μm were produced. The smaller diameter fibres were carded and needle punched to form a non-woven mat. Fibres and non-woven mats were hydrolysed for a period of 20 weeks. Fibres and pressed non-woven discs were treated with low-temperature oxygen plasma and alkaline KOH hydrolysis and ethanol washing was used as a reference treatment. The non-wovens lost 50% of their tear strength after 8 weeks in vitro while the fibres still retained 65% tensile strength after 20 weeks. Hydrolysation time in KOH, treatment time and power settings of the oxygen plasma were all directly proportional to the mechanical properties of the fibres. Increasing time (and power) resulted in lower tensile properties. Rapid wetting of the scaffolds was achieved by oxygen plasma, KOH hydrolysation and ethanol washing. Cell culturing using fibroblast cell line was carried out for the treated and non-treated non-woven scaffolds. In terms of adhesion and the spreading of the cells into the scaffold, best results after 3-day culturing were obtained for the oxygen plasma treated scaffolds.

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Acknowledgements

Research funds from the European Union Project “Spare Parts” (QLRT-2000-00487) and National Technology Agency (TeKes) for the Center of Excellence of Biomaterials are greatly appreciated. This work was also partially supported by the European Union funded STREP Project HIPPOCRATES (NMP3-CT-2003-505758) and was carried out under the scope of the European NoE EXPERTISSUES (NMP3-CT-2004-500283). The authors would like to thank Eira Lehtinen, Milla Törmälä and Iva Pashkuleva for their help during this work.

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Authors and Affiliations

  1. Institute of Biomaterials, Tampere University of Technology, P. O. Box 589, 33101, Tampere, Finland

    Ville Ellä, Pertti Törmälä & Minna Kellomäki

  2. 3Bs Research Group – Biomaterials, Biodegradables and Biomimetics, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal

    Manuela E. Gomes & Rui L. Reis

  3. Department of Polymer Engineering, University of Minho, Campus de Azurém, 4800-058, Guimaraes, Portugal

    Manuela E. Gomes & Rui L. Reis

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  1. Ville Ellä
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  2. Manuela E. Gomes
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  3. Rui L. Reis
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  4. Pertti Törmälä
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  5. Minna Kellomäki
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Correspondence to Ville Ellä.

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Ellä, V., Gomes, M.E., Reis, R.L. et al. Studies of P(L/D)LA 96/4 non-woven scaffolds and fibres; properties, wettability and cell spreading before and after intrusive treatment methods. J Mater Sci: Mater Med 18, 1253–1261 (2007). https://doi.org/10.1007/s10856-007-0144-z

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  • DOI: https://doi.org/10.1007/s10856-007-0144-z

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