Abstract
For a series of diphenylmethane-4,4′-diisocyanate (MDI) and 3-chloro-1,2-propanediol (CPDO), propanediol (PDO), or polyoxyethyleneoxidediane (POEOD) based polyurethanes degradation profiles and flammability were investigated by thermogravimetric analysis (TGA) alone or coupled with Fourier transform infra-red spectroscopy (FT-IR), differential scanning calorimetry (DSC), and oxygen index (OI) method. It was found that several correlations between the thermal parameters, such as initial decomposition temperature (IDT) or mass loss at given conversion degree, and oxygen index (or oxygen concentration) occur, thus making it possible to predict the thermal behavior of modificated polyurethanes on the basis of thermogravimetric data only. TGA with FT-IR proved to be a valuable extension of methods of thermal analysis commonly used to provide continuous monitoring of the IR spectra of evolving volatiles as well as quantitative analysis of gases produced during the decomposition process.
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Pielichowski, K. Thermal Behavior and Flammability of Polyurethanes Based on Diphenylmethane-4,4′-diisocyanate and Incorporating 3-Chloro-1,2-propanediol in the Main Chain. Polym J 29, 848–853 (1997). https://doi.org/10.1295/polymj.29.848
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DOI: https://doi.org/10.1295/polymj.29.848