Microstructure in Polyether-ester and Polyether-urethane Block Copolymers: Electric Polarization and X-ray Diffraction as Morphological Probes |
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Page 30
... Gradients at Domain Boundaries In principle SAXS data can be used to detect the presence of electron density gradients at interdomain boundaries and to calculate the profiles of such gradients . These gradients could be due to ...
... Gradients at Domain Boundaries In principle SAXS data can be used to detect the presence of electron density gradients at interdomain boundaries and to calculate the profiles of such gradients . These gradients could be due to ...
Page 154
... gradients to occur across the mold's thickness during the course of the reaction . These temperature gradients were responsible for the formation of distinctly different microstructures and molecular - weight distributions at the ...
... gradients to occur across the mold's thickness during the course of the reaction . These temperature gradients were responsible for the formation of distinctly different microstructures and molecular - weight distributions at the ...
Page 205
... gradients on some local scale . MDI and diisocyanate oligomers formed primarily from low - molecular - weight concentrate apart from oligomers formed primarily from high- molecular - weight PTMEG . Rigorous phase separation does not ...
... gradients on some local scale . MDI and diisocyanate oligomers formed primarily from low - molecular - weight concentrate apart from oligomers formed primarily from high- molecular - weight PTMEG . Rigorous phase separation does not ...
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