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    Morphological Investigation into Starch Bio-Nanocomposites via Synchrotron Radiation and Differential Scanning Calorimetry

    181061_40030_Pub_62676.pdf (4.819Mb)
    Access Status
    Open access
    Authors
    Liu, Huihua
    Chaudhary, Deeptangshu
    John, Joseph
    Tade, Moses
    We studied a hydrophilic, plasticized bionanocomposite system involving sorbitol plasticizer, amylose biopolymer, and montmorillonite (MMT) for the presence of competitive interactions among them at different moisture content. Synchrotron analysis via small angle X-ray scattering (SAXS) and thermal analysis using differential scanning calorimetry (DSC) were performed to understand crystalline growth and the distribution of crystalline domains within the samples. The SAXS diffraction patterns showed reduced interhelix spacing in the amylose network indicating strong amylose-sorbitol interactions. Depending on the sorbitol and MMT concentration, these interactions also affected the free moisture content and crystalline domains. Domains of around 95 Å and 312 Å were found in the low-moisture-content samples as compared to a single domain of 95 Å in the high-moisture-content samples. DSC measurements confirmed that the MMT increased the onset and the melting temperature of nanocomposites. Moreover, the results showed that the ternary interactions among sorbitol-amylose-MMT supported the crystalline heterogeneity through secondary nucleation.
    Date
    2011
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Liu, Huihua and Chaudhary, Deeptangshu and John, Joseph and Tade, Moses O. 2011. Morphological Investigation into Starch Bio-Nanocomposites via Synchrotron Radiation and Differential Scanning Calorimetry. Journal of Nanotechnology. 2011: ID 924582, 14 p.
    Source Title
    Journal of Nanotechnology
    DOI
    10.1155/2011/924582
    ISSN
    16879503
    School
    Department of Chemical Engineering
    Remarks

    This article is published under the Open Access publishing model and distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/ Please refer to the licence to obtain terms for any further reuse or distribution of this work.

    URI
    http://hdl.handle.net/20.500.11937/45822
    Collection
    • Curtin Research Publications

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