Summary
A double endothermic peak appears in the DSC curve of a PTHF oligomer. In order to investigate this phenomenon, a two-component blend of PTHF was prepared with a number average molecular mass of M=1400, and the double endothermic phenomena were investigated by TM-DSC. The larger the amount of the long chain component in the PTHF blend, the smaller the difference between the Cp-T curve and the normal DSC curve. The amounts of endothermic energy ΔHendo,1, ΔHendo,2 and exothermic energy ΔHexo,1, ΔHexo,2 in each peak at infinite modulation frequency were estimated.
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Tsuchiya, M., Kojima, T. The double endothermic phenomenon of polytetrahydrofurans in the melting temperature region. J Therm Anal Calorim 80, 159–162 (2005). https://doi.org/10.1007/s10973-005-0629-2
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DOI: https://doi.org/10.1007/s10973-005-0629-2