Microstructure in Polyether-ester and Polyether-urethane Block Copolymers: Electric Polarization and X-ray Diffraction as Morphological Probes |
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Page 151
... polyurethane sequences , usually aromatic , interspersed with polyether Although light or polyester sequences , usually aliphatic . crosslinking is employed in many commercial applications , the elastomeric properties are due primarily ...
... polyurethane sequences , usually aromatic , interspersed with polyether Although light or polyester sequences , usually aliphatic . crosslinking is employed in many commercial applications , the elastomeric properties are due primarily ...
Page 177
... polyurethane crystallinity in polymers with compositions 1.7 : 0.7 : 1 and 2.8 : 1.8 : 1 ( MDI : BD : oligomeric polyether glycol ) . They did find such evidence in systems with longer polyurethane sequences , starting with composition ...
... polyurethane crystallinity in polymers with compositions 1.7 : 0.7 : 1 and 2.8 : 1.8 : 1 ( MDI : BD : oligomeric polyether glycol ) . They did find such evidence in systems with longer polyurethane sequences , starting with composition ...
Page 247
... polyurethane systems as well as in dynamic mechanical studies of similar materials ( Mc Crum , 1967 ; Allen , 1973 ) ... polyurethane sequences of the ten systems , it has the highest interblock junction point density . In order that ...
... polyurethane systems as well as in dynamic mechanical studies of similar materials ( Mc Crum , 1967 ; Allen , 1973 ) ... polyurethane sequences of the ten systems , it has the highest interblock junction point density . In order that ...
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