Size exclusion chromatography of urea formaldehyde resins in dimethylformamide containing lithium chloride

A rapid, reproducible method for investigating the molecular mas distribution of urea formaldehyde resins by size exclusion chromatography has been developed. By using concentrated lithium chloride solution to prepare the sample, materials of high viscosity and high molecular mass can be easily diss...

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Bibliographic Details
Published in:Journal of applied polymer science 1984-12, Vol.29 (12), p.3863-3872
Main Authors: Ludlam, P. R., King, J. G.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Structure, morphology and analysis
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Summary:A rapid, reproducible method for investigating the molecular mas distribution of urea formaldehyde resins by size exclusion chromatography has been developed. By using concentrated lithium chloride solution to prepare the sample, materials of high viscosity and high molecular mass can be easily dissolved. Chromatography in dimethyl formamide containing lithium chloride eliminates hydrogen bonding and ensures that realistic values for molecular mass averages are obtained.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.1984.070291219