Abstract
The intent of this work is to establish a method for evaluating the chemical compositional distribution (CCD, in this case, nitrogen content (Nc)) and the molecular weight distribution (MWD) of cellulose nitrate (CN) using open and vapor-programed (VP) thin-layer chromatography (TLC). CCD could be determined with a nitromethane—methanol mixture in open TLC and with acetone—methanol—chloroform in VP-TLC. With mainly the former, the change in the rate of flow Rf was based on the adsorption—desorption mechanism and with the latter, the separation of polymer according to Nc was interpreted by the phase separation mechanism. Both methods gave similar CCD for given CN samples. The most effective method for evaluating the weight-average molecular weight was achieved with 1,4-dioxane—methanol—isopropanol mixture in VP-TLC, for which the phase separation mechanism was operative.
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Kamide, K., Okada, T., Terakawa, T. et al. Characterization of Cellulose Nitrate by Thin-Layer Chromatography. Polym J 10, 547–556 (1978). https://doi.org/10.1295/polymj.10.547
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DOI: https://doi.org/10.1295/polymj.10.547