Microstructure in Polyether-ester and Polyether-urethane Block Copolymers: Electric Polarization and X-ray Diffraction as Morphological Probes |
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Page 87
... PTMO segments are derived from approximately 1000 molecular - weight ... PTMT crystalline phase in samples prepared from undiluted melts . Broad ... PTMO - PTMT systems follow the averaging rule proposed by Gordon and Taylor ( Gordon ...
... PTMO segments are derived from approximately 1000 molecular - weight ... PTMT crystalline phase in samples prepared from undiluted melts . Broad ... PTMO - PTMT systems follow the averaging rule proposed by Gordon and Taylor ( Gordon ...
Page 142
... PTMO - PTMT block copolymers . When combined with the average PTMT segment contour lengths , 4.2 nm for H1 to 11.4 nm for H4 , these lamellar thicknesses are compatible with Hoffman's region III cluster model ( Hoffman , 1983 ) , where ...
... PTMO - PTMT block copolymers . When combined with the average PTMT segment contour lengths , 4.2 nm for H1 to 11.4 nm for H4 , these lamellar thicknesses are compatible with Hoffman's region III cluster model ( Hoffman , 1983 ) , where ...
Page 294
... PTMO - PTMT Zhu , et al . ( Zhu , segmented copolymers exhibited isotropic , PTMT - crystallization kinetics which followed [ 7-11 ] . In accordance with theory , m did not vary with temperature , although the values of m measured were ...
... PTMO - PTMT Zhu , et al . ( Zhu , segmented copolymers exhibited isotropic , PTMT - crystallization kinetics which followed [ 7-11 ] . In accordance with theory , m did not vary with temperature , although the values of m measured were ...
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