A neutron-scattering study of polyethylene deformed by rolling

SPELLS, S. J. and OKOROAFOR, E. U. (1994). A neutron-scattering study of polyethylene deformed by rolling. Polymer, 35 (21), 4590-4594.

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Link to published version:: https://doi.org/10.1016/0032-3861(94)90807-9
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    Abstract

    Polyethylene mixed crystal mats have been studied after rolling at room temperature to roll ratios up to 2.5, using the LOQ instrument at the ISIS pulsed neutron source (RAL, Chilton). Radius of gyration measurements for vertical (R(v)) and horizontal (R(H)) sectors, where the vertical sector includes the roll direction, show that R(H) is virtually unchanged by rolling, whereas R(V) is increased significantly. Combined with an unchanged intensity from extrapolation to zero angle, these results indicate the absence of local melting during deformation. Intermediate angle measurements show a decrease in intensity, while the 'sheet-like' form of the scattering is retained. This is consistent with the breakup of lamellae into progressively smaller blocks, within which the original stem arrangement is preserved.

    Item Type: Article
    Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Centre for Automation and Robotics Research > Sheaf Solutions
    Materials and Engineering Research Institute > Polymers Nanocomposites and Modelling Research Centre > Polymers, Composites and Spectroscopy Group
    Identification Number: https://doi.org/10.1016/0032-3861(94)90807-9
    Page Range: 4590-4594
    Depositing User: Hilary Ridgway
    Date Deposited: 12 May 2010 10:44
    Last Modified: 18 Mar 2021 09:15
    URI: http://shura.shu.ac.uk/id/eprint/1818

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