Fabrication of osteoconductive Ca3–xM2x(PO4)2 (M = Na, K) calcium phosphate bioceramics by stereolithographic 3D printing
- Authors: Putlyaev V.I.1, Evdokimov P.V.1, Safronova T.V.1, Klimashina E.S.1, Orlov N.K.1
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Affiliations:
- Moscow State University
- Issue: Vol 53, No 5 (2017)
- Pages: 529-535
- Section: Article
- URL: https://journals.rcsi.science/0020-1685/article/view/158225
- DOI: https://doi.org/10.1134/S0020168517050168
- ID: 158225
Cite item
Abstract
Osteoconductive ceramic implants based on Ca3–xM2x(PO4)2 (M = Na, K) double phosphates and having the Kelvin structure, tailored macropore size (in the range 50–750 μm), and a total porosity of 70–80% have been produced by stereolithographic 3D printing. We demonstrate that, to maintain the initial geometry of a model and reach sufficiently high strength characteristics of macroporous ceramics (compressive strength up to 9 MPa and fracture toughness up to 0.7 MPa m1/2), the polymer component should be removed under specially tailored heat treatment conditions. Based on our results on polymer matrix destruction kinetics, we have found heat treatment conditions that ensure a polymer removal rate no higher than 0.1 wt%/min and allow one to avoid implant cracking during the firing process.
About the authors
V. I. Putlyaev
Moscow State University
Author for correspondence.
Email: valery.putlyaev@gmail.com
Russian Federation, Moscow, 119991
P. V. Evdokimov
Moscow State University
Email: valery.putlyaev@gmail.com
Russian Federation, Moscow, 119991
T. V. Safronova
Moscow State University
Email: valery.putlyaev@gmail.com
Russian Federation, Moscow, 119991
E. S. Klimashina
Moscow State University
Email: valery.putlyaev@gmail.com
Russian Federation, Moscow, 119991
N. K. Orlov
Moscow State University
Email: valery.putlyaev@gmail.com
Russian Federation, Moscow, 119991
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