Robocasting: Prediction of ink printability in solgel bioactive glass

abstract

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.

keywords

PARTICLE-SIZE DISTRIBUTION; DRYING-SHRINKAGE BEHAVIOR; SCAFFOLDS; MICROSTRUCTURE; SUSPENSIONS; PACKING

subject category

Materials Science

authors

Ben-Arfa, BAE; Neto, AS; Salvado, IMM; Pullar, RC; Ferreira, JMF

our authors

acknowledgements

Fundacao para a Ciencia e a Tecnologia, Grant/Award Number: IF/00681/2015, PTDC/EPH-PAT/6281/2014, UID/CTM/50011/2013

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".