Structure and Hydration of Highly-Branched, Monodisperse Phytoglycogen Nanoparticles
| العنوان: | Structure and Hydration of Highly-Branched, Monodisperse Phytoglycogen Nanoparticles |
|---|---|
| المؤلفون: | Nickels, Jonathan D. Oak Ridge National Lab. , Oak Ridge, TN . Joint Inst. for Neutron Sciences, Univ. of Tennessee, Knoxville, TN . Dept. of Physics, Oak Ridge National Lab. , Oak Ridge, TN . Biology and Soft Matter Division, Atkinson, John Univ. of Guelph, ON . Dept. of Physics, Papp-Szabo, Erzsebet Univ. of Guelph, ON . Dept. of Physics, Stanley, Christopher Oak Ridge National Lab. , Oak Ridge, TN . Biology and Soft Matter Division, Diallo, Souleymane O. Oak Ridge National Lab. , Oak Ridge, TN . Chemical and Engineering Materials Division, Perticaroli, Stefania Univ. of Guelph, ON . Dept. of Physics, Baylis, Benjamin Univ. of Guelph, ON . Dept. of Physics, Mahon, Perry Univ. of Guelph, ON . Dept. of Physics, Ehlers, Georg Oak Ridge National Lab. , Oak Ridge, TN . Quantum Condensed Matter Division, Katsaras, John Oak Ridge National Lab. , Oak Ridge, TN . Joint Inst. for Neutron Sciences, Dutcher, John R. Univ. of Guelph, ON . Dept. of Physics |
| سنة النشر: | 2023 |
| المجموعة: | SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
| مصطلحات موضوعية: | 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY |
| الوصف: | Phytoglycogen is a naturally occurring polysaccharide nanoparticle made up of extensively branched glucose monomers. It has a number of unusual and advantageous properties, such as high water retention, low viscosity, and high stability in water, which make this biomaterial a promising candidate for a wide variety of applications. For this paper, we have characterized the structure and hydration of aqueous dispersions of phytoglycogen nanoparticles using neutron scattering. Small angle neutron scattering results suggest that the phytoglycogen nanoparticles behave similar to hard sphere colloids and are hydrated by a large number of water molecules (each nanoparticle contains between 250% and 285% of its mass in water). This suggests that phytoglycogen is an ideal sample in which to study the dynamics of hydration water. To this end, we used quasielastic neutron scattering (QENS) to provide an independent and consistent measure of the hydration number, and to estimate the retardation factor (or degree of water slow-down) for hydration water translational motions. These data demonstrate a length-scale dependence in the measured retardation factors that clarifies the origin of discrepancies between retardation factor values reported for hydration water using different experimental techniques. Finally, the present approach can be generalized to other systems containing nanoconfined water. |
| نوع الوثيقة: | other/unknown material |
| وصف الملف: | application/pdf |
| اللغة: | unknown |
| Relation: | http://www.osti.gov/servlets/purl/1261307; https://www.osti.gov/biblio/1261307; https://doi.org/10.1021/acs.biomac.5b01393 |
| DOI: | 10.1021/acs.biomac.5b01393 |
| الاتاحة: | http://www.osti.gov/servlets/purl/1261307 https://www.osti.gov/biblio/1261307 https://doi.org/10.1021/acs.biomac.5b01393 |
| رقم الانضمام: | edsbas.ECDBC5F5 |
| قاعدة البيانات: | BASE |
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