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- W1981958951 abstract "A gel filtration chromatographic column standardization technique for a phenolic resin under a given set of operating conditions such as column, solvent and elution rate is presented. Sephacryl S-200 (high resolution) was used in this work for gel filtration chromatography fractionation of a high-molecular-weight alkaline resole phenolic resin. The individual fractions were put through the analytical column to determine their elution times. The weight-average molecular weight of each of the phenolic fractions (samples) was determined by ultracentrifuge sedimentation equilibrium methods. The chromatographic column was standardized against the readily available sodium polystyrene sulfonates. Plotted data from both the sodium polystyrene sulfonates and ultracentrifuged samples gave essentially straight lines. Subtracting the equation of the least squares line of the sodium polystyrene sulfonate from that of the phenolic gave an approximate correction factor to be added to any newly standardized sodium polystyrene sulfonate column and gives an approximate phenolic standardization without resorting to the ultracentrifuge. The standardization technique will be of interest to researchers and developers of phenolic resins and other water soluble polymers." @default.
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- W1981958951 date "1988-01-01" @default.
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- W1981958951 title "Gel filtration chromatography of resole phenolic resins" @default.
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- W1981958951 doi "https://doi.org/10.1016/s0021-9673(01)84549-0" @default.
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