Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.361, 269-274, 2001
Morphology, dielectric relaxation and conductivity of the novel polyurethane ionomers based on poly(thetramethylene oxide)
The thermal transitions, microphase structure, local segmental and conductivity relaxation of the novel polyurethanes (PUs) based on the poly(tetramethylene glycol) as soft segments (SSs) and 4,4 ' -diphenylmethane diisocyanate-1,4-butane diol sequences of various length as hard segments (HSs) containing ionic groups in SSs are studied by calorimetry, X-ray scattering and dielectric relaxation spectroscopy.