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Characterization of Chitin Synthesized from Snail Shell

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TMS 2017 146th Annual Meeting & Exhibition Supplemental Proceedings

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

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Abstract

Thermogravimetric analysis was used to analyze chitin thermal stability present in unprocessed and processed snail shell samples using different concentrations of HCl and NaOH. The result shows that 42% of CaCO3 in the snail shell decomposes between 699–779 °C while decomposition of chitin (2.11%) starts at 275 °C and ends at 335 °C. De-mineralization and de-proteinization of the snail shell using 1.5 M HCl and 0.4 M NaOH eliminates CaCO3 formation and sample shows existence of 60% chitin decomposing between 346 and 412 °C. The XRD of virgin snail shell showing the main diffraction face intensity for CaCO3 occurring at 2θ = 29.5o with other CaCO3 peaks occur at 2θ =  30.2o, 39.3o, 41.0o, 44.2o, 45.9o, 48.9o, 51.5o, 53.1o and 55.6o. Chitin present occurs at reflection 2θ = 36.3o with weak intensity and the XRD shows no evidence of CaCO3 but two chitin crystalline peaks at 20.6o and 26.3o with 78% lowest crystallinity index.

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Acknowledgements

The research group acknowledge with grateful thanks the University of Lagos, Nigeria, for providing the platform for the TETFUND RESEARCH GRANT (CRC NO. 2015/19) used for this research. We equally recognise the assistance provided by staff of Metallurgical Laboratory, University of Lagos.

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Authors and Affiliations

  1. Department of Metallurgical and Materials Engineering, University of Lagos, Lagos, Nigeria

    S. O. Adeosun & O. P. Gbenebor

  2. Institut fur Verbundwerkstoffe GmbH, 67663, Kaiserslautern, Germany

    E. I. Akpan

  3. Department of Mechanical Engineering, University of Lagos, Lagos, Nigeria

    S. A. Olaleye

Authors
  1. S. O. Adeosun
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  2. O. P. Gbenebor
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  3. E. I. Akpan
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  4. S. A. Olaleye
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Correspondence to S. O. Adeosun .

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    The Minerals, Metals & Materials Society TMS

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Adeosun, S.O., Gbenebor, O.P., Akpan, E.I., Olaleye, S.A. (2017). Characterization of Chitin Synthesized from Snail Shell. In: TMS, T. (eds) TMS 2017 146th Annual Meeting & Exhibition Supplemental Proceedings. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-51493-2_25

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