Microstructure in Polyether-ester and Polyether-urethane Block Copolymers: Electric Polarization and X-ray Diffraction as Morphological Probes |
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Page 21
... increasing temperature showing a sharp decrease in slope at a temperature on the range 350 to 375 K ; that temperature increased with increasing polymerization . number - average , polyurethane - 21 Hydrogen Bonding.
... increasing temperature showing a sharp decrease in slope at a temperature on the range 350 to 375 K ; that temperature increased with increasing polymerization . number - average , polyurethane - 21 Hydrogen Bonding.
Page 172
... increasing polyurethane segment length . A molecular interpretation of this transition is offered in the discussion section . At temperatures between 410 K and 520 K , Q1 through Q10 all exhibited endotherms in their 20 K / min DSC ...
... increasing polyurethane segment length . A molecular interpretation of this transition is offered in the discussion section . At temperatures between 410 K and 520 K , Q1 through Q10 all exhibited endotherms in their 20 K / min DSC ...
Page 186
... increasing the average polyether and polyurethane - segment lengths serves to enhance the rubbery plateau modulus ( Van Bogart , 1983 ) . Similarly , given a constant distribution of polyether segment lengths , increasing average ...
... increasing the average polyether and polyurethane - segment lengths serves to enhance the rubbery plateau modulus ( Van Bogart , 1983 ) . Similarly , given a constant distribution of polyether segment lengths , increasing average ...
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