A simple recipe for direct writing complex 45S5 Bioglass (R) 3D scaffolds

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abstract

Direct-writing fabrication techniques, such as robocasting, have been ignored up to date for the production of scaffolds from 45S5 Bioglass (R), probably due to difficulties in the preparation of stable high solids loading colloidal suspensions (inks) from 45S5 Bioglass (R) powders using traditional approaches. Here, we report how these difficulties can be overcome. Aqueous suspensions containing 45 vol% of 45S5 Bioglass (R) were successfully prepared using carboxymethyl cellulose (CMC) as single multifunctional (dispersant, binder, gelation agent) processing additive. Playing with the molecular weight (MW) and amount of CMC enabled tuning the theological properties of the inks to meet the stringent requirements of robocasting. An incomplete surface coverage allowing bridging flocculation to occur is the key to obtain highly performing inks. (C) 2012 Elsevier B.V. All rights reserved.

keywords

BIOACTIVE GLASS SCAFFOLDS; PHOSPHATE SCAFFOLDS; CERAMIC SCAFFOLDS; BONE; CALCIUM; REGENERATION

subject category

Materials Science; Physics

authors

Eqtesadi, S; Motealleh, A; Miranda, P; Lemos, A; Rebelo, A; Ferreira, JMF

our authors

foto Isabel Alexandra Fernandes Lemos

Isabel Alexandra Fernandes Lemos

Post-doc Fellowship
foto José Maria da Fonte Ferreira

José Maria da Fonte Ferreira

Retired Professor

Groups

G5 - Biomimetic, Biological and Living Materials

acknowledgements

This study was supported by the Junta de Extremadura and FEDER Funds under Grant IB10006. The support of DEMac/CICECO, University of Aveiro, is highly appreciated.

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Publication Details

type
Journal Article
year
2013
journal
MATERIALS LETTERS
volume
93
publisher
ELSEVIER SCIENCE BV
issn
0167-577X
digital object identifier
10.1016/j.matlet.2012.11.043
web of science article identifier
WOS:000315608300020

Journal Metrics (JCR 2019)

Journal Impact Factor
3.204
Journal Impact Factor (5 yrs)
2.785
category normalized journal percentile
66.536

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