Rescaling approach to molecular orientation for NMR and optical properties of polymer networks

M. E. Ries, M. G. Brereton, I. M. Ward, J. I. Cail, R. F T Stepto

    Research output: Contribution to journalArticlepeer-review

    Abstract

    A single scale invariant chain model is used to describe quantitatively the stress-optical, stress-strain, and NMR properties of polyethylene networks. The results of previous Monte Carlo simulations have been used to determine a rescaling constant for polyethylene, which enables accurate estimates of junction point densities to be made from NMR and stress-optical measurements. From the rescaling constant the stress-optical coefficient for polyethylene is calculated and is in good agreement with previous experimental values. NMR spin-echo data are used in conjunction with the rescaling constant to determine the rheological entanglement length in polyethylene melts.
    Original languageEnglish
    Pages (from-to)5665-5669
    Number of pages4
    JournalMacromolecules
    Volume35
    Issue number14
    DOIs
    Publication statusPublished - 2 Jul 2002

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