Hydrophobically modified poly(vinyl alcohol) and bentonite nanocomposites thereof: Barrier, mechanical, and aesthetic properties

JOHANSSON, Caisa and CLEGG, Francis (2015). Hydrophobically modified poly(vinyl alcohol) and bentonite nanocomposites thereof: Barrier, mechanical, and aesthetic properties. Journal of Applied Polymer Science, 132 (13), p. 41737.

[img]
Preview
PDF
Clegg - Hydrophobically modified polyvinyl alcohol - AM.pdf - Accepted Version
All rights reserved.

Download (689kB) | Preview
Official URL: http://onlinelibrary.wiley.com/doi/10.1002/app.417...
Link to published version:: https://doi.org/10.1002/app.41737
Related URLs:

    Abstract

    Composite films were formed by incorporating three different bentonites into an ethylene modified, water-soluble poly(vinyl alcohol), EPVOH. The interaction of EPVOH with both hydrophilic and hydrophobic bentonites was investigated. EPVOH provided lower water vapor and oxygen transmission rates compared to a conventional PVOH grade when exposed at high relative humidities (70-90% RH). EPVOH films which exhibited oxygen barrier properties comparable to that of a biaxially oriented PET packaging film at 80% RH were produced. High compatibility between EPVOH and hydrophilic bentonites provided an even distribution of clay platelets in the composites. A strong increase in Young's modulus with increased addition of any of the three bentonites was found. At low addition levels the hydrophobic bentonite proved to be effective in terms of maintaining high elongation at break, high transparency and high gloss.

    Item Type: Article
    Uncontrolled Keywords: composites, clay, films, packaging, mechanical properties
    Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Polymers Nanocomposites and Modelling Research Centre > Polymers, Composites and Spectroscopy Group
    Identification Number: https://doi.org/10.1002/app.41737
    Page Range: p. 41737
    Depositing User: Helen Garner
    Date Deposited: 02 Feb 2015 17:11
    Last Modified: 18 Mar 2021 04:03
    URI: http://shura.shu.ac.uk/id/eprint/9316

    Actions (login required)

    View Item View Item

    Downloads

    Downloads per month over past year

    View more statistics