How to cite this article: Luczynski KW, Brynk T, Ostrowska B, Swieszkowski W, Reihsner R, Hellmich C. 2013. Consistent quasistatic and acoustic elasticity determination of poly-L-lactide-based rapid-prototyped tissue engineering scaffolds. J Biomed Mater Res Part A 2013:101A:138–144.
Consistent quasistatic and acoustic elasticity determination of poly-L-lactide-based rapid-prototyped tissue engineering scaffolds†
Article first published online: 24 JUL 2012
Copyright © 2012 Wiley Periodicals, Inc.
Journal of Biomedical Materials Research Part A
Volume 101A, Issue 1, pages 138–144, January 2013
How to Cite
Luczynski, K. W., Brynk, T., Ostrowska, B., Swieszkowski, W., Reihsner, R. and Hellmich, C. (2013), Consistent quasistatic and acoustic elasticity determination of poly-L-lactide-based rapid-prototyped tissue engineering scaffolds. J. Biomed. Mater. Res., 101A: 138–144. doi: 10.1002/jbm.a.34316
- Issue published online: 23 NOV 2012
- Article first published online: 24 JUL 2012
- Manuscript Accepted: 15 JUN 2012
- Manuscript Revised: 31 MAY 2012
- Manuscript Received: 2 FEB 2012
- Seventh Framework Program of the European Commission (FP7), theme FP7-2008-SME-1, within project BIO-CT-EXPLOIT. Grant Number: 232164
- quasistatic unloading tests;
- ultrasound tests;
- PLLA scaffold;
- elastic energy
This paper is concerned with reliable and physically sound elasticity determination of rapid-prototyped tissue engineering scaffolds made of poly-L-lactide (PLLA), with and without small portions of tricalcium phosphate (TCP) inclusions. At the level of overall scaffolds, that is, that of several millimeters, multiple uniaxial loading–unloading (quasistatic) tests were performed, giving access to the scaffolds' Young's moduli, through stress–strain characteristics during unloading. In addition, acoustic tests with 0.05 MHz frequency delivered an independent access to elastic properties, in terms of the normal components of the scaffolds' stiffness tensors. The latter strongly correlate, in a linear fashion, with the Young's moduli from the unloading tests, revealing porosity independence of Poisson's ratio. The magnitude of the latter is in full agreement with literature data on polymers. Both of these facts underline that both ultrasound tests and quasistatic unloading tests reliably provide the elastic properties of tissue engineering scaffolds. © 2012 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 101A:138–144, 2013.