Microstructure in Polyether-ester and Polyether-urethane Block Copolymers: Electric Polarization and X-ray Diffraction as Morphological Probes |
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Page ix
... segmented polyether- urethanes ( Lilaonitkul , 1977 ) PAGE • 12 • 14 · 18 2-3 2-4 DSC traces for a compression - molded MDI / BD / PTMO polyether- urethane block copolymer ( Van Bogart , 1981 ) · Schematic representation of different ...
... segmented polyether- urethanes ( Lilaonitkul , 1977 ) PAGE • 12 • 14 · 18 2-3 2-4 DSC traces for a compression - molded MDI / BD / PTMO polyether- urethane block copolymer ( Van Bogart , 1981 ) · Schematic representation of different ...
Page 279
... segmented polyether - esters and polyether - urethanes based on PTMO are similar in several aspects , but different in others . Differences in microstructure are directly related to the extent of hard segment ( polyester or polyurethane ) ...
... segmented polyether - esters and polyether - urethanes based on PTMO are similar in several aspects , but different in others . Differences in microstructure are directly related to the extent of hard segment ( polyester or polyurethane ) ...
Page 283
... segmented polyurethanes from Chapter 5. All are based on 1000 MW PTMO segments and all have hard - segment weight fractions in the range 0.426 to 0.465 . In the temperature range of the rubbery plateau , there is considerable difference ...
... segmented polyurethanes from Chapter 5. All are based on 1000 MW PTMO segments and all have hard - segment weight fractions in the range 0.426 to 0.465 . In the temperature range of the rubbery plateau , there is considerable difference ...
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