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Characterization of Urea Encapsulated by Biodegradable Starch-PVA-Glycerol

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Abstract

The influence of the blending ratio of biodegradable starch/polyvinyl alcohol (PVA)/glycerol in encapsulating urea has been investigated. It is found that water absorption capacity increased approximately 135 % as the amounts of starch, PVA and glycerol in the composite film increase. Therefore, the swell ability of the composite film is increased and the urea is released from the composite film in the wet environment. The FTIR shows that the urea had been encapsulated successfully in the composite films. Moreover, the soil burial biodegradation results indicated that the biodegradability of the starch/PVA/glycerol/urea composite film strongly depended on the PVA proportion in the composite film matrix. The DSC results show that the higher the amount of PVA in the composite film, the less change of the melting enthalpy value. The crystalline region of PVA remains after biodegradation.

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Acknowledgements

The authors are very thankful to the Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka (UTeM) for providing the facilities and constant encouragement, also the funding from long term grant under LRGS/2011/FKP/TK02/1R00001.

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Authors and Affiliations

  1. Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100, Durian Tunggal Melaka, Malaysia

    Yip Hing Lum, Azizah Shaaban, Mohd Fairuz Dimin, Noraiham Mohamad, Nadiah Hamid & Sian Meng Se

  2. Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100, Durian Tunggal Melaka, Malaysia

    Nona Merry M. Mitan

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  1. Yip Hing Lum
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  2. Azizah Shaaban
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  3. Nona Merry M. Mitan
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  4. Mohd Fairuz Dimin
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  5. Noraiham Mohamad
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  6. Nadiah Hamid
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  7. Sian Meng Se
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Correspondence to Yip Hing Lum.

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Lum, Y.H., Shaaban, A., Mitan, N.M.M. et al. Characterization of Urea Encapsulated by Biodegradable Starch-PVA-Glycerol. J Polym Environ 21, 1083–1087 (2013). https://doi.org/10.1007/s10924-012-0552-0

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  • DOI: https://doi.org/10.1007/s10924-012-0552-0

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