Open AccessFundamental studies of polymer filtration
Author(s) -
Barbara Smith,
M. T. Lu,
Thomas W. Robison,
Y.C. Rogers,
Kennard V. Wilson
Publication year - 1998
Language(s) - English
Resource type - Reports
DOI - 10.2172/563828
Subject(s) - polymer , metal ions in aqueous solution , chemistry , ultrafiltration (renal) , metal , size exclusion chromatography , ligand (biochemistry) , ionic strength , selectivity , polymer chemistry , inorganic chemistry , chemical engineering , organic chemistry , chromatography , aqueous solution , engineering , biochemistry , receptor , enzyme , catalysis
This is the final report of a one-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). The objectives of this project were (1) to develop an enhanced fundamental understanding of the coordination chemistry of hazardous-metal-ion complexation with water-soluble metal-binding polymers, and (2) to exploit this knowledge to develop improved separations for analytical methods, metals processing, and waste treatment. We investigated features of water-soluble metal-binding polymers that affect their binding constants and selectivity for selected transition metal ions. We evaluated backbone polymers using light scattering and ultrafiltration techniques to determine the effect of pH and ionic strength on the molecular volume of the polymers. The backbone polymers were incrementally functionalized with a metal-binding ligand. A procedure and analytical method to determine the absolute level of functionalization was developed and the results correlated with the elemental analysis, viscosity, and molecular size