Microstructure in Polyether-ester and Polyether-urethane Block Copolymers: Electric Polarization and X-ray Diffraction as Morphological Probes |
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Page 89
... number - average molecular weight of 1000 . oxide ) with a [ ( CO COOCH2CH2CH2CH20 ) x ( CH2CH2CH2CH20 ) yn Here y averages 12 to 13. The number - average molecular weight of the copolymers is typically 25,000 to 30,000 . The average ...
... number - average molecular weight of 1000 . oxide ) with a [ ( CO COOCH2CH2CH2CH20 ) x ( CH2CH2CH2CH20 ) yn Here y averages 12 to 13. The number - average molecular weight of the copolymers is typically 25,000 to 30,000 . The average ...
Page 217
... number- average molecular weight and stereoregularity . Scanning calorimetric data indicate that crystallization and subsequent melting of soft segments accompany the shoulder in E " , as seen in Chapter 5 . To study further the energy ...
... number- average molecular weight and stereoregularity . Scanning calorimetric data indicate that crystallization and subsequent melting of soft segments accompany the shoulder in E " , as seen in Chapter 5 . To study further the energy ...
Page 294
... number - average , expected ones . PTMT - segment degree of polymerization . To illuminate possible mechanisms that might explain these crystallization kinetics , an experimental program is proposed . Based on the study of segmented ...
... number - average , expected ones . PTMT - segment degree of polymerization . To illuminate possible mechanisms that might explain these crystallization kinetics , an experimental program is proposed . Based on the study of segmented ...
Contents
THE CONDENSATION BLOCK COPOLYMER LITERATURE | 8 |
Schematic representation of different types of hard | 19 |
THE MEASUREMENT OF INTERFACIAL POLARIZATION | 30 |
20 other sections not shown
Common terms and phrases
amorphous phase analysis approximately average block copolymers calculated calorimetry component composition crystalline phase decreasing degree of polymerization dielectric spectroscopy differential scanning calorimetry diffraction lines DSC traces equation exhibit films frequency glass transition temperature gradients heat of fusion heating traces homopolymer hydrogen bonding increasing integral isotropic lamellae lattice Lilaonitkul maxima measured melting endotherm melting point microdomains microscopy microstructures modulus mold molecular weight N/cm² nucleation number-average paracrystalline parameters permittivity poly(tetramethylene polyester polyester crystallites polyether crystallization polyether melting polyether segments polyether sequences polymers polyurethane segments polyurethane sequences primary transition PTMEG PTMO PTMO-PTMT PTMT reaction regions rubbery plateau sample SAXS scanning scattering angle scattering patterns segment lengths segmented polyesters segmented polyether-esters segmented polyether-urethanes segmented polyurethanes shown in Figure spectra spectrometer spherulites Subaudio subcooling superlattice Table temperature range thermal thermoplastic elastomers urethane values volume fraction weight fraction X-ray diffraction X-ray scattering