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In vitro degradation behavior of functionalized cellulosic fibers reinforced PLA composite

M.reza Foruzanmehr1, Mathieu R. Robert1, Pascal Vuillaume2 and Said Elkoun1
  • 1 Universite de Sherbrooke, Carrefour of Innovative Technologies and Ecodesign, Canada
  • 2 Centre de Technologie Minérale et de Plasturgie, Canada

Cellulosic fibers are renewable and also light in weight which make them a good candidate as reinforcing elements in bio-composites. Having hydrophilic nature resulted by presence of hydroxyl groups in the structure of these fibers restricts their application in the polymeric matrices because of poor interfacial adhesion, and the low dispersion within the matrix. To resolve these problems this study tried firstly to functionalize the flax fibers with selective oxidation. This improves the adhesion of subsequent amphiphilic TiO2 thin films created by Sol-Gel technique. The PLA matrices were reinforced by using non/functionalized, TiO2/ non –coated flax fibers. The composites were conditioned in simulated body solution at 37°C to induce the degradation. The behaviour of the PLA/glass composite has been analysed during its degradation in simulated physiological condition. Physical and mechanical properties of the composites and the interfacial strength between the matrix and the fibers were characterized quantitatively and qualitatively. The results showed better interfacial properties within functionalized flax fiber reinforced composites comparing to non-functionalized ones. Functionalized TiO2 coated flax reinforced composites showed better mechanical properties within the first 15 weeks of conditioning comparing to the control samples.

References:
[1] M. Foruzanmehr, P.Y. Vuillaume, M. Robert, S. Elkoun, The effect of grafting a nano-TiO2 thin film on physical and mechanical properties of cellulosic natural fibers, Materials & Design, 85 (2015) 671-678.
[2] S.K. Chattopadhyay, S. Singh, N. Pramanik, U.K. Niyogi, R.K. Khandal, R. Uppaluri, A.K. Ghoshal, Biodegradability studies on natural fibers reinforced polypropylene composites, Journal of Applied Polymer Science, 121 (2011) 2226-2232.
[3] P.A. Weiss, Renewable Resources: A Report to the Committee on Natural Resources of the National Academy of Sciences-National Research Council, 1st ed., National Academy of Sciences-National Research Council, Washington, D.C., 1962.
[4] Q.H. Shubhra, A.K.M.M. Alam, M.A. Gafur, S. Shamsuddin, M. Khan, M. Saha, D. Saha, M.A. Quaiyyum, J. Khan, M. Ashaduzzaman, Characterization of plant and animal based natural fibers reinforced polypropylene composites and their comparative study, Fibers Polym, 11 (2010) 725-731.
[5] Yan, N. Chouw, K. Jayaraman, Effect of UV and water spraying on the mechanical properties of flax fabric reinforced polymer composites used for civil engineering applications, Materials & Design, 71 (2015) 17-25.

Keywords: in vitro, mechanical property, Polymeric material, biodegredation

Conference: 10th World Biomaterials Congress, Montréal, Canada, 17 May - 22 May, 2016.

Presentation Type: Poster

Topic: Mechanical properties of biomaterials

Citation: Foruzanmehr M, Robert MR, Vuillaume P and Elkoun S (2016). In vitro degradation behavior of functionalized cellulosic fibers reinforced PLA composite. Front. Bioeng. Biotechnol. Conference Abstract: 10th World Biomaterials Congress. doi: 10.3389/conf.FBIOE.2016.01.02540

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Received: 27 Mar 2016; Published Online: 30 Mar 2016.