Investigation of chain dynamics in poly(n-alkyl methacrylate)s by solid-state NMR : comparison with poly(n-alkyl acrylate)s

Marianne Gaborieau, Robert Graf, Hans Wolfgang Spiess

    Research output: Contribution to journalArticle

    Abstract

    PnAMAs exhibit a local nanophase separation associated with intriguing chain dynamics (Macromol. Chem. Phys. 2005, 206, 142). PnAMAs of high molar mass, as determined by SEC and MHKS parameters, were investigated in the melt with a recently-developed solid-state NMR method (NOE with dipolar filter; Solid State Nucl. Magn. Res. 2005, 28, 160). The correlation times are assigned to the relaxation of the alkyl nanodomains, as coupled motions of the main chain and hindered local modes in the side chain. Comparison with poly(n-alkyl acrylates) shows a higher anisotropy of the main chain motions and a better organized local nanophase separation in PnAMAs.
    Original languageEnglish
    Pages (from-to)2078-2086
    Number of pages9
    JournalMacromolecular Chemistry and Physics
    Volume209
    Issue number20
    Publication statusPublished - 2008

    Keywords

    • polymers
    • nuclear magnetic resonance

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