Summary
Extraction of monomers, additives, oligomers, and polymers from a blend is very time consuming and labor intensive. Now by use of a special guard column and multi-solvent gradient liquid chromatograph (HPLC), the extraction and analysis can be performed in one step.
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Staal, W.J., Cools, P., van Herk, A.M. et al. On-line extraction of polymers, oligomers, additives and monomers by multiple solvents on packed HPLC columns. Chromatographia 37, 218–220 (1993). https://doi.org/10.1007/BF02275864
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DOI: https://doi.org/10.1007/BF02275864