Microstructure in Polyether-ester and Polyether-urethane Block Copolymers: Electric Polarization and X-ray Diffraction as Morphological Probes |
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Page ix
... 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 types of hard- segment ...
... 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 types of hard- segment ...
Page 25
... urethane group on a neighboring chain . Blackwell's three - dimensional model , based on a twelve - reflection fiber pattern , predicts that each urethane group participates in two hydrogen bonds with urethane groups on two neighboring ...
... urethane group on a neighboring chain . Blackwell's three - dimensional model , based on a twelve - reflection fiber pattern , predicts that each urethane group participates in two hydrogen bonds with urethane groups on two neighboring ...
Page 214
... URETHANE BLOCK COPOLYMERS Ten polyether - urethane thermoplastic elastomers of varying chemical structure have been characterized by dielectric spectroscopy and scanning calorimetry . In the temperature range corresponding to the rubber ...
... URETHANE BLOCK COPOLYMERS Ten polyether - urethane thermoplastic elastomers of varying chemical structure have been characterized by dielectric spectroscopy and scanning calorimetry . In the temperature range corresponding to the rubber ...
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