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13C NMR spin-lattice relaxation in solid poly(methyl methacrylate)

Effects of tacticity and of plasticizers

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Summary

13C spin-lattice relaxation rates R1 in samples of solid PMMA have been measured with CP MAS NMR. Isotactic, atactic, syndiotactic, and the 1∶2 i-s PMMA complex were measured, along with atactic samples containing bisdioxan or the monomer as a plasticizer. The reorientation of the α-methyl protons is the dominant relaxation source for the methylene, α-methyl and quarternary carbon nuclei. Increased mobility of the polymer in the presence of a plasticizer is not reflected in significant changes in R1.

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Authors and Affiliations

  1. Department of Molecular Spectroscopy, Faculty of Science, University of Nijmegen, Toernooiveld, 6525, ED Nijmegen, The Netherlands

    Hommo T. Edzes & Wiebren S. Veeman

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  1. Hommo T. Edzes
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  2. Wiebren S. Veeman
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Edzes, H.T., Veeman, W.S. 13C NMR spin-lattice relaxation in solid poly(methyl methacrylate). Polymer Bulletin 5, 255–261 (1981). https://doi.org/10.1007/BF00254711

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  • DOI: https://doi.org/10.1007/BF00254711

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