Abstract
It has been shown that blends of starch with a poly(ethylene-vinyl-alcohol) copolymer, EVOH, designated as SEVA-C, present an interesting combination of mechanical, degradation and biocompatible properties, specially when filled with hydroxyapatite (HA). Consequently, they may find a range of applications in the biomaterials field. This work evaluated the influence of HA fillers and of blowing agents (used to produce porous architectures) over the viscoelastic properties of SEVA-C polymers, as seen by dynamic mechanical analysis (DMA), in order to speculate on their performances when withstanding cyclic loading in the body. The composite materials presented a promising performance under dynamic mechanical solicitation conditions. Two relaxations were found being attributed to the starch and EVOH phases. The EVOH relaxation process may be very useful in vivo improving the implants performance under cyclic loading. DMA results also showed that it is possible to produce SEVA-C compact surface/porous core architectures with a mechanical performance similar to that of SEVA-C dense materials. This may allow for the use of these materials as bone replacements or scaffolds that must withstand loads when implanted.
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References
T. Hayashi, Prog. Polym. Sci. 19 (1994) 663.
S. Vainionpaa, P. Rokkanen and P. Tormala, ibid. 14 (1989) 678.
K. P. Andriano, T. Pohojonen and P. Tormala, J. Appl. Biomater. 5 (1994) 133.
C. Mauli Agrawal, G. G. Niederauer and K. A. Athanasiou, Tiss. Eng. 1 (1995) 241.
W. W. Minuth, M. Sittinger and S. Kloth, Cell Tiss. Res. 291 (1998) 1.
S. Gogolewski, M. Jovanovic, S. M. Perren, J. C. Dillon and M. K. Hughes, J. Biomed. Mater. Res. 27 (1993) 1135.
R. L. Reis, S. C. Mendes, A. M. Cunha and M. J. Bevis, Polym. Int. 43 (1997) 347.
R. L. Reis and A. M. Cunha, J. Mater. Sci.: Mater. Med. 6 (1995) 786.
R. L. Reis, A. M. Cunha, P. S. Allan and M. J. Bevis, Adv. Polym. Technol. 16 (1997) 263.
R. L. Reis and A. M. Cunha, J. Polym. Adv. Technol. 7 (1996) 784.
R. L. Reis, I. B. Leonor, M. T. Rego, A. M. Cunha, M. H. Fernandes and R. N. Correia, in “Bioceramics 11”, New York, USA, 1998, edited by R. L. Legeros and J. P. Le Geros (World Scienti®c Pub., Singapore, 1998, p. 169.
S. C. Mendes, Y. P. Bovell, R. L. ReiS , A. M. Cunha, J. D. De Bruijn and C. A. Van Blitterswijk, Biomater submitted.
S. C. Mendes, R. L. Reis, A. M. Cunha, Y. P. Bovell, C. A. Van Blitterswijk and J. D. De Bruijn, in Proceedings of the 24th Annual Meeting of the Society for Biomaterials, (San Diego, USA, 1998), p. 9.
C. S. Pereira, M. E. Gomes, R. L. Reis and A. M. Cunha in “Foams and emulsions”, edited by J. F. Sadoc and N. Rivier (NATO/ASI Series (E: Applied Sciences), 354, 1999, p. 193.
M. E. Gomes, A. S. Ribeiro, P. B. Malafaya, R. L. Reis and A. M. Cunha in Proceedings of the 25th Annual Meeting of The Society For Biomaterials, (Providence, USA, 1999), p. 224.
J. D. Ferry, “Viscoelastic properties of polymers” (Wiley, New York, 1980).
N. G. Mccrum, B. E. Read and G. Williams, “Anelastic and dielectric effects in polymer solids” (Dover Publication, New York, 1991).
J. Richard, J. Polym. Adv. Technol. 7 (1996) 784.
J. F. Mano, R. L. Reis and A. M. Cunha, submitted.
R. L. Reis, A. M. Cunha and M. J. Bevis, in Proceedings of Antec'98±Plastics on my Mind, Society of Plastics Engineers, Atlanta, USA, (1998), p. 487.
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Mano, J.F., Vaz, C.M., Mendes, S.C. et al. Dynamic mechanical properties of hydroxyapatite-reinforced and porous starch-based degradable biomaterials. Journal of Materials Science: Materials in Medicine 10, 857–862 (1999). https://doi.org/10.1023/A:1008916901009
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DOI: https://doi.org/10.1023/A:1008916901009