Williamson, Nathan H.Dower, April M.Codd, Sarah L.Broadbent, Amber L.Gross, DieterSeymour, Joseph D.2019-04-232019-04-232019-02Williamson, Nathan H., April M. Dower, Sarah L. Codd, Amber L. Broadbent, Dieter Gross, and Joseph D. Seymour. "Glass Dynamics and Domain Size in a Solvent-Polymer Weak Gel Measured by Multidimensional Magnetic Resonance Relaxometry and Diffusometry." Physical Review Letters 122, no. 6 (February 2019). DOI:10.1103/PhysRevLett.122.068001.1079-7114https://scholarworks.montana.edu/handle/1/15465Nuclear magnetic resonance measurements of rotational and translational molecular dynamics are applied to characterize the nanoscale dynamic heterogeneity of a physically cross-linked solvent-polymer system above and below the glass transition temperature. Measured rotational dynamics identify domains associated with regions of solidlike and liquidlike dynamics. Translational dynamics provide quantitative length and timescales of nanoscale heterogeneity due to polymer network cross-link density. Mean squared displacement measurements of the solvent provide microrheological characterization of the system and indicate glasslike caging dynamics both above and below the glass transition temperature.enThis Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).http://rightsstatements.org/vocab/InC/1.0/Article