Skip to main content
placeholder image

Incorporation of glass-reinforced hydroxyapatite microparticles into poly(lactic acid) electrospun fibre mats for biomedical applications

Journal Article


Download full-text (Open Access)

Abstract


  • Tissue engineering is constantly evolving towards novel materials that mimic the properties of the replaced injured tissue or organ. A hybrid electrospun membrane of electroactive poly(l-acid lactic) (PLLA) polymer with glass reinforced hydroxyapatite (Bonelike®) microparticles placed among the polymer fibres in a morphology like “islands in the sea” was processed. The incorporation of 60 to 80 wt% Bonelike® bone grafts granules with ≤ 150 μm into the polymer solution lead to an amorphous polymeric fibre membranes, and a decrease of the average polymer fibre diameter from 550 ± 150 nm for neat PLA down to 440 ± 170 nm for the hybrid composite. The presence of Bonelike® in the polymer mats reduced the activation energy for thermal degradation from 134 kJ·mol− 1, obtained for the neat PLLA membranes down to 71 kJ·mol− 1, calculated for the hybrid composite membranes. In vitro cell culture results suggest that the developed processing method does not induce cytotoxic effects in MG 63 osteoblastic cells, and creates an environment that enhances cell proliferation, when compared to the neat PLLA membrane. The simplicity and scalability of the processing method suggests a large application potential of this novel hybrid polymer-microparticles fibre membranes for bone regenerative medicine.

UOW Authors


  •   Santos, Daniel (external author)
  •   Correia, Cristina (external author)
  •   Silva, D M. (external author)
  •   Gomes, P S. (external author)
  •   Fernandes, M H. (external author)
  •   Santos, J D. (external author)
  •   Gomes da Silva Sencadas, Vitor

Publication Date


  • 2017

Citation


  • Santos, D., Correia, C. O., Silva, D. M., Gomes, P. S., Fernandes, M. H., Santos, J. D. & Sencadas, V. (2017). Incorporation of glass-reinforced hydroxyapatite microparticles into poly(lactic acid) electrospun fibre mats for biomedical applications. Materials Science and Engineering C: Materials for Biological Applications, 75 1184-1190.

Scopus Eid


  • 2-s2.0-85014936778

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1240&context=eispapers1

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/239

Number Of Pages


  • 6

Start Page


  • 1184

End Page


  • 1190

Volume


  • 75

Abstract


  • Tissue engineering is constantly evolving towards novel materials that mimic the properties of the replaced injured tissue or organ. A hybrid electrospun membrane of electroactive poly(l-acid lactic) (PLLA) polymer with glass reinforced hydroxyapatite (Bonelike®) microparticles placed among the polymer fibres in a morphology like “islands in the sea” was processed. The incorporation of 60 to 80 wt% Bonelike® bone grafts granules with ≤ 150 μm into the polymer solution lead to an amorphous polymeric fibre membranes, and a decrease of the average polymer fibre diameter from 550 ± 150 nm for neat PLA down to 440 ± 170 nm for the hybrid composite. The presence of Bonelike® in the polymer mats reduced the activation energy for thermal degradation from 134 kJ·mol− 1, obtained for the neat PLLA membranes down to 71 kJ·mol− 1, calculated for the hybrid composite membranes. In vitro cell culture results suggest that the developed processing method does not induce cytotoxic effects in MG 63 osteoblastic cells, and creates an environment that enhances cell proliferation, when compared to the neat PLLA membrane. The simplicity and scalability of the processing method suggests a large application potential of this novel hybrid polymer-microparticles fibre membranes for bone regenerative medicine.

UOW Authors


  •   Santos, Daniel (external author)
  •   Correia, Cristina (external author)
  •   Silva, D M. (external author)
  •   Gomes, P S. (external author)
  •   Fernandes, M H. (external author)
  •   Santos, J D. (external author)
  •   Gomes da Silva Sencadas, Vitor

Publication Date


  • 2017

Citation


  • Santos, D., Correia, C. O., Silva, D. M., Gomes, P. S., Fernandes, M. H., Santos, J. D. & Sencadas, V. (2017). Incorporation of glass-reinforced hydroxyapatite microparticles into poly(lactic acid) electrospun fibre mats for biomedical applications. Materials Science and Engineering C: Materials for Biological Applications, 75 1184-1190.

Scopus Eid


  • 2-s2.0-85014936778

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1240&context=eispapers1

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/239

Number Of Pages


  • 6

Start Page


  • 1184

End Page


  • 1190

Volume


  • 75