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Title: Solution Behavior of Modified Polyethylenimine (PEI) Polymers by Light Scattering Investigations

Solution Behavior of Modified Polyethylenimine (PEI) Polymers by Light Scattering Investigations The eight average molecular weights, as well as other characteristics such as the second virial coefficients and root-mean-square (RMS) radii of gyration of poly (ethyleneimine) (PEI) and various derivatives, have been determined in solution light scattering studies. The solution dynamics of PEI and carboxylated and phosphorylated derivatives were studied a pH of 3.3, 7.0 and 10.0. Measurements were made in freshly distilled and de-ionized water as well as in 0.1 M, 1 M and 5-M solutions of sodium chloride in water. Molecular weights were calculated from Berry plots. The purified polymer, PEI-1, gave a molecular weight of 39,600 g/mol., while the same polymer, which was not purified, PEI-2, has MW of 43,100 g/mol.
Authors: ; ; ; ;
Publication Date:
OSTI Identifier:822405
Report Number(s):DOE/ER/14764
TRN: US200413%%19
DOE Contract Number:FG07-97ER14764
Resource Type:Technical Report
Data Type:
Resource Relation:Other Information: PBD: 18 Mar 2004
Research Org:University of Massachusetts Lowell, Research Foundation (US)
Sponsoring Org:(US)
Country of Publication:United States
Language:English
Subject: 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; LIGHT SCATTERING; MOLECULAR WEIGHT; ORGANIC POLYMERS; SODIUM CHLORIDES; WATER; PH VALUE