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.

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Volume29, Issue12

December 1984

Pages 3863-3872

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

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

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