Study of diffusion coefficient of anhydrous trehalose glasses by using PFG-NMR spectroscopy

Hyun Joung Kwon, Reiji Takekawa, Junichi Kawamura, Michio Tokuyama

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    We investigated the temperature dependent long time self-diffusion coefficient of the anhydrous trehalose supercooled liquids by using pulsed field gradient nuclear magnetic resonance (PFG-NMR) spectroscopy. At the same temperature ranges, the diffusion coefficient convoluted from the α-relaxation time as Einstein-Smoluchowski relaxation, measured by using the dielectric loss spectroscopy are well overlapped with diffusion coefficients within experimental error. The temperature dependent diffusion coefficients obtained from different methods are normalized by fictive temperature and well satisfied the single master curve, proposed by Tokuyama.

    Original languageEnglish
    Title of host publication4th International Symposium on Slow Dynamics in Complex Systems
    Subtitle of host publicationKeep Going Tohoku
    Pages503-506
    Number of pages4
    DOIs
    Publication statusPublished - 2013
    Event4th International Symposium on Slow Dynamics in Complex Systems: Keep Going Tohoku - Sendai, Japan
    Duration: 2012 Dec 22012 Dec 7

    Publication series

    NameAIP Conference Proceedings
    Volume1518
    ISSN (Print)0094-243X
    ISSN (Electronic)1551-7616

    Other

    Other4th International Symposium on Slow Dynamics in Complex Systems: Keep Going Tohoku
    CountryJapan
    CitySendai
    Period12/12/212/12/7

    Keywords

    • PFG-NMR
    • diffusion coefficient
    • master curves
    • trehalose

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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