Publication detail

Improving the strength of β-TCP scaffolds produced by Digital Light Processing using two-step sintering

PAREDES SÁNCHEZ, C. ROLEČEK, J. MIRANDA, P.

Original Title

Improving the strength of β-TCP scaffolds produced by Digital Light Processing using two-step sintering

Type

journal article in Web of Science

Language

English

Original Abstract

Digital Light Processing is combined with two-step sintering to obtain bioactive scaffolds with improved strength and mechanical isotropy. Highly loaded photosensitive suspensions were prepared from beta-TCP powder to create scaffolds consisting of interpenetrating struts with two different designs. Two sintering methods were used: conventional sintering (CS) and two-step sintering (2SS). The latter resulted in a microstructure with uniformly shaped grains and reduced porosity. Their compressive strength was determined by uniaxial testing under two different load configurations, with the force applied parallel or perpendicular to the building plane of the scaffolds. Design optimisation and fine-tuning of the sintering process helped in reducing the presence of interlayer defects and minimise the shear-dominated fractures. Isotropic fracture behaviour was achieved, with similar central values of the Weibull distribution (49 +/- 1 MPa vs. 51 +/- 1 MPa) along both testing directions, showing a great potential for their use in load-bearing bone tissue engineering applications.

Keywords

Scaffolds; Calcium phosphate; Mechanical properties; Digital Light Processing; Two-step sintering

Authors

PAREDES SÁNCHEZ, C.; ROLEČEK, J.; MIRANDA, P.

Released

1. 4. 2024

Publisher

ELSEVIER SCI LTD

Location

London

ISBN

1873-619X

Periodical

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY

Year of study

44

Number

4

State

United Kingdom of Great Britain and Northern Ireland

Pages from

2571

Pages to

2580

Pages count

10

URL

https://www.sciencedirect.com/science/article/pii/S0955221923009160?via%3Dihub

BibTex

@article{BUT187122,
  author="Claudia Isabel {Paredes Sánchez} and Jakub {Roleček} and Pedro {Miranda}",
  title="Improving the strength of β-TCP scaffolds produced by Digital Light Processing using two-step sintering",
  journal="JOURNAL OF THE EUROPEAN CERAMIC SOCIETY",
  year="2024",
  volume="44",
  number="4",
  pages="2571--2580",
  doi="10.1016/j.jeurceramsoc.2023.11.028",
  issn="1873-619X",
  url="https://www.sciencedirect.com/science/article/pii/S0955221923009160?via%3Dihub"
}