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Polymers 2018, 10(3), 275; https://doi.org/10.3390/polym10030275

Co-Deposition of a Hydrogel/Calcium Phosphate Hybrid Layer on 3D Printed Poly(Lactic Acid) Scaffolds via Dip Coating: Towards Automated Biomaterials Fabrication

1
Institute of Chemistry, University of Potsdam, D-14476 Potsdam, Germany
2
Institute of Earth and Environmental Sciences, University of Potsdam, D-14476 Potsdam, Germany
*
Author to whom correspondence should be addressed.
Received: 23 October 2017 / Revised: 16 February 2018 / Accepted: 28 February 2018 / Published: 7 March 2018
(This article belongs to the Special Issue Bio-inspired and Bio-based Polymers)
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Abstract

The article describes the surface modification of 3D printed poly(lactic acid) (PLA) scaffolds with calcium phosphate (CP)/gelatin and CP/chitosan hybrid coating layers. The presence of gelatin or chitosan significantly enhances CP co-deposition and adhesion of the mineral layer on the PLA scaffolds. The hydrogel/CP coating layers are fairly thick and the mineral is a mixture of brushite, octacalcium phosphate, and hydroxyapatite. Mineral formation is uniform throughout the printed architectures and all steps (printing, hydrogel deposition, and mineralization) are in principle amenable to automatization. Overall, the process reported here therefore has a high application potential for the controlled synthesis of biomimetic coatings on polymeric biomaterials. View Full-Text
Keywords: 3D printing; dip-coating; poly(lactic acid); PLA; calcium phosphate; gelatin; chitosan; hydrogel; calcium phosphate hybrid material; biomaterials 3D printing; dip-coating; poly(lactic acid); PLA; calcium phosphate; gelatin; chitosan; hydrogel; calcium phosphate hybrid material; biomaterials
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Schneider, M.; Günter, C.; Taubert, A. Co-Deposition of a Hydrogel/Calcium Phosphate Hybrid Layer on 3D Printed Poly(Lactic Acid) Scaffolds via Dip Coating: Towards Automated Biomaterials Fabrication. Polymers 2018, 10, 275.

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