Microstructure in Polyether-ester and Polyether-urethane Block Copolymers: Electric Polarization and X-ray Diffraction as Morphological Probes |
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Page 96
... melting endotherms for 10 K / min heating scans of the 6 segmented Scans at 5 and 20 K / min produced similar traces . polyether - esters . In order to integrate the areas of the melting endotherms , it was necessary to construct ...
... melting endotherms for 10 K / min heating scans of the 6 segmented Scans at 5 and 20 K / min produced similar traces . polyether - esters . In order to integrate the areas of the melting endotherms , it was necessary to construct ...
Page 174
... endotherms below 450 K with single maxima , Q9 and Q10 exhibit complex multi - peaked endotherms that that extend almost to 420 K , the region in which the MDI / BD urethane homopolymer exhibits melting ( MacKnight , 1968 ) . As ...
... endotherms below 450 K with single maxima , Q9 and Q10 exhibit complex multi - peaked endotherms that that extend almost to 420 K , the region in which the MDI / BD urethane homopolymer exhibits melting ( MacKnight , 1968 ) . As ...
Page 241
... melting endotherm apparent in the heating trace . The polyether crystallization exotherm which occurs during cooling becomes larger as the cooling rate is decreased , while the exotherm which occurs during heating becomes smaller . At a ...
... melting endotherm apparent in the heating trace . The polyether crystallization exotherm which occurs during cooling becomes larger as the cooling rate is decreased , while the exotherm which occurs during heating becomes smaller . At a ...
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