resumo
Bioactive glass powders synthesized by solgel are usually porous and exhibit high specific surface areas, conferring them poor ability for scaffolds fabrication using colloidal processing approaches. The difficulties associated with colloidal processing of solgel glass have hindered so far the processing of 3-D scaffolds by robocasting. This research paper investigates the importance of calcination temperature (CT) and balls to powder ratio (BPR) used upon wet milling on the maximum achievable solid loading in aqueous media. The effects of CT, BPR, and solid loading on the flow behavior and viscoelastic properties of the suspensions/pastes were evaluated in this preliminary work. The aim is to disclose the sets of experimental variables that are most promising for the formulation of printable inks, and open the way for the future fabrication of porous scaffolds by robocasting and other 3-D additive manufacturing techniques.
palavras-chave
PARTICLE-SIZE DISTRIBUTION; DRYING-SHRINKAGE BEHAVIOR; SCAFFOLDS; MICROSTRUCTURE; SUSPENSIONS; PACKING
categoria
Materials Science
autores
Ben-Arfa, BAE; Neto, AS; Salvado, IMM; Pullar, RC; Ferreira, JMF
nossos autores
Ana Sofia Neto
Estudante de doutoramento
Basam Abobaker Emhmed Ben-Arfa
Investigador
Isabel Margarida Miranda Salvado
Professor associado
José Maria da Fonte Ferreira
Professor(a) Jubilado(a)
Rob Pullar
ColaboradorGrupos
G4 - Materiais Renováveis e Economia Circular
G5 - Materiais Biomiméticos, Biológicos e Vivos
Projectos
agradecimentos
Fundacao para a Ciencia e a Tecnologia, Grant/Award Number: IF/00681/2015, PTDC/EPH-PAT/6281/2014, UID/CTM/50011/2013