Succinic acid is a sustainable raw material growing in use for 2000 Da polyester polyols, although there is a lack of fundamental information about the compatibility and crystallization behavior in polyol blends and copolymers. To explore these issues, DSC characterization, crystallization kinetics, thermodynamics, and powder x-ray diffraction studies were performed on succinic acid-based polyols made with 1,4-butanediol, 1,6-hexanediol, their blends, and on copolyester polyols made at 20%, 50%, and 80% molar ratios of the diols. The polyol blends show incompatibility with separate crystallization dynamics from butanediol and hexanediol polyesters in the blends. The copolyester polyols show compatibility and new crystal morphologies. We will report the synthesis, Johnson-Mehl-Avrami-Kolmogorov crystallization kinetics, powder diffraction results, and thermodynamics for the crystallization processes of the polyol blends and copolymers.

Succinate polyester polyol copolymers and blends: Synthesis, compatibility, crystallization kinetics, and crystal morphologies

253rd National Meeting (2017)

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