Heterogeneity of Network Structures and Water Dynamics in ?-Carrageenan Gels Probed by Nanoparticle Diffusometry #DNPNMR

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Heterogeneity of Network Structures and Water Dynamics in ?-Carrageenan Gels Probed by Nanoparticle Diffusometry #DNPNMR

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11-25-2018, 06:02 AM

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Heterogeneity of Network Structures and Water Dynamics in ?-Carrageenan Gels Probed by Nanoparticle Diffusometry #DNPNMR

From The DNP-NMR Blog:

Heterogeneity of Network Structures and Water Dynamics in ?-Carrageenan Gels Probed by Nanoparticle Diffusometry #DNPNMR

Kort, Daan W. de, Erich Schuster, Freek J.M. Hoeben, Ryan Barnes, Meike Emondts, Henk M. Janssen, Niklas Lorén, Songi Han, Henk Van As, and John P.M. van Duynhoven. “Heterogeneity of Network Structures and Water Dynamics in ?-Carrageenan Gels Probed by Nanoparticle Diffusometry.” Langmuir 34, no. 37 (September 18, 2018): 11110–20.

https://doi.org/10.1021/acs.langmuir.8b01052.

<div style="text-align: justify;">A set of functionalized nanoparticles (PEGylated dendrimers, d = 2.8 - 9 nm) was used to probe the structural heterogeneity in Na+/K+ induced ?-carrageenan gels. The self-diffusion behavior of these nanoparticles as observed by 1H PFG NMR, FRAP and RICS revealed a fast and a slow component, pointing towards microstructural heterogeneity in the gel network. The self-diffusion behavior of the faster nanoparticles could be modelled with obstruction by a coarse network (average mesh size

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