期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 579, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2019.123633
关键词
Clustering; Mesostructured liquid phase; Glycine; Scattering
资金
- EPSRC [EP/P0068X/1]
- Synchrotron SOLEIL
- EPSRC [EP/P00668X/1, EP/P006965/1] Funding Source: UKRI
In this work DLS, NTA, SAXS and NMR were used to investigate populations, size distributions and structure of clusters in undersaturated aqueous solutions of glycine. Molecular and colloidal scale (mesoscale) clusters with radii around 0.3-0.5 nm and 100-150 nm, respectively, were observed using complementary experimental techniques. Molecular clusters are consistent with hydrated glycine dimers present in equilibrium with glycine monomers in aqueous solutions. Mesoscale clusters previously observed in supersaturated glycine solutions appear to be indefinitely stable, in mutual equilibrium within mesostructured undersaturated solutions across all glycine concentrations investigated here, down to as low as 1 mg/g of water.
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