Scaffolds of PDLLA/bioglass 58S produced via selective laser sintering
AUTOR(ES)
Pereira, Rafaela do Vale, Salmoria, Gean Vitor, Moura, Marcela Oliveira Caldeira de, Aragones, Águedo, Fredel, Márcio Celso
FONTE
Mat. Res.
DATA DE PUBLICAÇÃO
30/05/2014
RESUMO
Scaffolds of PDLLA were produced to be implemented in maxilofacial surgeries inducing bone repair and regeneration. To prepare these scaffolds, bioglass (BG58S) was synthesized by sol-gel method, in order to be applied as osteoconductive dispersed particles in PDLLA matrix. Once presenting greater facility on parts fabrication, this polymeric matrix enables complex geometries production besides presenting compatible degradation rate for scaffold absorption and bone regeneration. Scaffolds production was performed by selective laser sintering in order to obtain tailored-made parts. FTIR and XRD analyses were carried out to observe the composition and evaluate the presence of crystalized phases in bioglass, obtaining Wollastonite. SEM was used to observe the BG particle distribution in PDLLA matrix and flexural test was performed to evaluate the composite mechanical properties. Results showed that was possible to obtain pieces using SLS method and with addition of 10%wt BG to polymeric matrix, flexural modulus and strength increased regarding to pure polymer.
Documentos Relacionados
- Rapid manufacturing of polyethylene parts with controlled pore size gradients using selective laser sintering
- Surface Finishes for Ti-6Al-4V Alloy Produced by Direct Metal Laser Sintering
- Laser Raman evidence for new cloverleaf secondary structures for eukaryotic 5.8S RNA and prokaryotic 5S RNA.
- Estruturação tridimensional de scaffolds de policaprolactona via manufatura aditiva
- Porous titanium scaffolds produced by powder metallurgy for biomedical applications