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Open AccessArticle

Surface Etching of 3D Printed Poly(lactic acid) with NaOH: A Systematic Approach

1
Institute of Chemistry, University of Potsdam, D-14476 Potsdam, Germany
2
Faculty of Chemistry, Jagiellonian University, PL-30-387 Kraków, Poland
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(8), 1711; https://doi.org/10.3390/polym12081711
Received: 19 June 2020 / Revised: 20 July 2020 / Accepted: 24 July 2020 / Published: 30 July 2020
(This article belongs to the Special Issue 3D and 4D Printing of (Bio)Materials)
The article describes a systematic investigation of the effects of an aqueous NaOH treatment of 3D printed poly(lactic acid) (PLA) scaffolds for surface activation. The PLA surface undergoes several morphology changes and after an initial surface roughening, the surface becomes smoother again before the material dissolves. Erosion rates and surface morphologies can be controlled by the treatment. At the same time, the bulk mechanical properties of the treated materials remain unaltered. This indicates that NaOH treatment of 3D printed PLA scaffolds is a simple, yet viable strategy for surface activation without compromising the mechanical stability of PLA scaffolds. View Full-Text
Keywords: surface modification; sodium hydroxide etching; poly(lactic acid), 3D printing; roughness; wettability; erosion surface modification; sodium hydroxide etching; poly(lactic acid), 3D printing; roughness; wettability; erosion
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Schneider, M.; Fritzsche, N.; Puciul-Malinowska, A.; Baliś, A.; Mostafa, A.; Bald, I.; Zapotoczny, S.; Taubert, A. Surface Etching of 3D Printed Poly(lactic acid) with NaOH: A Systematic Approach. Polymers 2020, 12, 1711.

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