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Mechanical properties of dense polylactic acid structures fabricated by three dimensional printing
Abstract
Polylactic acid (PLA) is a bioresorbable polymer that is used in a number of clinical situations. Complex shapes of PLA are commonly machined for bone fixation and reconstruction. Solid free from fabrication methods, such as 3D printing, can produce complex-shaped articles directly from a CAD model. This study reports on the mechanical properties of 3D-printed PLLA parts. 3D printing is a solid free-form fabrication process which produces components by ink-jet printing a binder into sequential powder layers. Test bars were fabricated from low and high molecular weight PLA powders with chloroform used as a binder. The binder printed per unit line length of the powder was varied to analyze the effects of printing conditions on mechanical and physical properties of the PLA bars. Furthermore, cold isostatic pressing was performed after printing to improve the mechanical properties of the printed bars. The maximum measured tensile strength for the low molecular weight PLLA (53 000) is 17.40 +/- 0.71 MPa and for high molecular weight PLLA (312 000) is 15.94 +/- 1.50 MPa.
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Cited by
The return of a forgotten polymer—Polycaprolactone in the 21st century
Woodruff, M. A., & Hutmacher, D. W. (2010) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2010.04.002 · Cited by 4,033
Recent progress in drug delivery
Li, C., Wang, J., Wang, Y., Gao, H., Wei, G., Huang, Y., Yu, H., Gan, Y., Wang, Y., Mei, L., et al. (2019) · Acta Pharmaceutica Sinica B · doi:10.1016/j.apsb.2019.08.003 · Cited by 818
Poly (lactic acid)-based biomaterials for orthopaedic regenerative engineering
Narayanan, G., Vernekar, V. N., Kuyinu, E. L., & Laurencin, C. T. (2016) · Advanced Drug Delivery Reviews · doi:10.1016/j.addr.2016.04.015 · Cited by 484
Lv, Q., & Feng, Q. (2006) · Journal of Materials Science: Materials in Medicine · doi:10.1007/s10856-006-0610-z · Cited by 117
Åkerlund, E., Diez-Escudero, A., Grzeszczak, A., & Persson, C. (2022) · Polymers · doi:10.3390/polym14163305 · Cited by 80
Development of a flow evolution network model for the stress-strain behavior of poly(L-lactide)
Dreher, M. L., Nagaraja, S., Bergstrom, J., & Hayman, D. (2017) · Journal of Biomechanical Engineering · doi:10.1115/1.4037071 · Cited by 12
Metadata
- Authors
- GIORDANO, R. A., Wu, B. M., Borland, S. W., Cima, L. G., Sachs, E. M., & Cima, M. J.
- Venue
- Journal of Biomaterials Science, Polymer Edition
- Publisher
- Informa UK Limited
- Published
- 1997-01
- Volume
- 8
- Issue
- 1
- Pages
- 63-75
- ISSN
- 0920-5063 (ISSN-L)
- 1568-5624
- OpenAlex
- W2014006687
- Cited by
- 413
- References
- 0
- FWCI
- 11.58
- Type
- journal article
- Language
- en
- Open access
- closed
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