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Relationship Between Dip-Coating Fabrication Parameters and the Elastic Properties of Rubber Latex Prosthesis

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Abstract

In the present work we are mainly interested in the use of the natural latex extract from the Hevea brasiliensis for medical applications. This presentation focuses on the influence of the fabrication parameters on the final elastic properties of the tubes obtained by dip-coating. The elastic properties of the prosthesis were investigated using tension-deformation experiments. The influence of important fabrication parameters were studied, such as: dip-coating velocity, final prosthesis thickness (which was varied as a function of the number of baths), and thermal treatment. Single and cycled tension-deformation experiments were performed with closed and opened samples considering longitudinal and axial directions. A model is proposed for the anisotropy of the elastic behavior, which involves the sulfur bonds between polymeric chains.

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Acknowledgments

This work was supported by IMMP - CNPq / PADCT III Milênio, project number 62.0061/01-4. We thank Prof. Dr. E. H. G. Lara and M. S. Ogasawara, for experimental assistance on the rheologic characterizations, and Prof. Dr. H. Panzeri, R.S. Antunes and E. Volta for experimental help on the stress-strain assays.

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Authors and Affiliations

  1. Departamento de Física e Matemática, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, 14040-901, Brazil

    W.F.P. Neves-Junior, T. C. dos Santos, M. Ferreira & M. Mulato

  2. Departamento de Bioquímica, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, 14040-901, Brazil

    J. Coutinho-Netto

Authors
  1. W.F.P. Neves-Junior
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  2. T. C. dos Santos
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  3. M. Ferreira
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  4. M. Mulato
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  5. J. Coutinho-Netto
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Neves-Junior, W., Santos, T.C.d., Ferreira, M. et al. Relationship Between Dip-Coating Fabrication Parameters and the Elastic Properties of Rubber Latex Prosthesis. MRS Online Proceedings Library 823, W11.9 (2004). https://doi.org/10.1557/PROC-823-W11.9

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  • DOI: https://doi.org/10.1557/PROC-823-W11.9

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