Main content

Structure and Dynamics of Aqueous Dispersions of Highly-Branched Monodisperse Phytoglycogen Nanoparticles

Show full item record

Title: Structure and Dynamics of Aqueous Dispersions of Highly-Branched Monodisperse Phytoglycogen Nanoparticles
Author: Atkinson, John
Department: Department of Physics
Program: Biophysics
Advisor: Dutcher, John
Abstract: Phytoglycogen is a natural monodisperse polysaccharide nanoparticle isolated from sweet corn. The particles are highly hydrophilic resulting in high water retention, low viscosity, and extraordinary stability in water. We use neutron scattering to study the structure and dynamics of aqueous dispersions of phytoglycogen. Small angle neutron scattering (SANS) showed that the particles have uniform density with radius 17.4 ± 1.6 nm, and allowed the determination of the concentration dependence of the inter-particle spacing, and the hydration number (nH = 22.5 ± 2.5 nm per glucose monomer). Quasielastic neutron scattering showed sub-diffusive motion of the hydration water and provided an independent value of the hydration number (nH = 25.8 ± 4.6 nm per glucose monomer), in agreement with the SANS result. Taken together, the results show that between 250-285% of the hydrated particle mass is due to hydration water.
URI: http://hdl.handle.net/10214/9127
Date: 2015-08
Rights: Attribution 2.5 Canada
Terms of Use: All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.


Files in this item

Files Size Format View Description
Atkinson_John_201508_MSc.pdf 2.107Mb PDF View/Open Final Copy of Atkinson Thesis

This item appears in the following Collection(s)

Show full item record

Attribution 2.5 Canada Except where otherwise noted, this item's license is described as Attribution 2.5 Canada