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    Compatibilizing role of carbon nanotubes in poly(vinyl alcohol)/starch blend

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    Type
    Article
    Authors
    Jose, Jobin Vinodh
    De, Sadhankumar
    Ma'adeed, Mariam Al Ali Al
    Bhadra Dakua, Jolly
    Sreekumar, P. A.
    Sougrat, Rachid cc
    Al-Harthi, Mamdouh Ahmed
    KAUST Department
    Imaging and Characterization Core Lab
    Core Labs
    Date
    2014-10-03
    Online Publication Date
    2014-10-03
    Print Publication Date
    2015-01
    Permanent link to this record
    http://hdl.handle.net/10754/563787
    
    Metadata
    Show full item record
    Abstract
    Polymer nanocomposites based on poly(vinyl alcohol)/starch blend and carbon nanotubes (CNT) were prepared by solution mixing, followed by casting. Glycerol was used as a plasticizer and added in the starch dispersion. The uniform dispersion of CNT in water before mixing with PVA/starch blend, was achieved by using an Ultrasonicator probe. The composites were characterized by measurement of tensile properties, thermal analysis, FE-SEM, TEM, XRD studies, and water uptake. It was observed that the decrease in tensile strength, modulus, and elongation at break on addition of starch into PVA can be arrested by incorporation of CNT. The strong physical bonding such as hydrogen bonding among the hydroxyl groups of polymer components and oxygen containing groups on CNT surface resulted in a more tortuous path for the water to follow, lowering of water uptake. Thermal analysis and spectroscopic images showed an increase in blend homogeneity in the presence of CNT.
    Citation
    Jose, J., De, S. K., AlMa’adeed, M. A.-A., Dakua, J. B., Sreekumar, P. A., Sougrat, R., & Al-Harthi, M. A. (2014). Compatibilizing role of carbon nanotubes in poly(vinyl alcohol)/starch blend. Starch - Stärke, 67(1-2), 147–153. doi:10.1002/star.201400074
    Sponsors
    Thanks to the Deanship of Scientific Research for financial assistance through project number DSR IN121016. Thanks also to the Department of Chemical Engineering, KFUPM, for providing the necessary facilities.
    Publisher
    Wiley
    Journal
    Starch - Stärke
    DOI
    10.1002/star.201400074
    ae974a485f413a2113503eed53cd6c53
    10.1002/star.201400074
    Scopus Count
    Collections
    Articles; Imaging and Characterization Core Lab

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