Microstructure in Polyether-ester and Polyether-urethane Block Copolymers: Electric Polarization and X-ray Diffraction as Morphological Probes |
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Page 87
... approximately 1000 molecular - weight , polydisperse a - hydro , w - hydroxy PTMO oligomers . PTMO crystallization appears to be suppressed during solidification of the undiluted polymer melts . Differential scanning calorimetry ( DSC ) ...
... approximately 1000 molecular - weight , polydisperse a - hydro , w - hydroxy PTMO oligomers . PTMO crystallization appears to be suppressed during solidification of the undiluted polymer melts . Differential scanning calorimetry ( DSC ) ...
Page 90
... approximately 10 g . Sample weights measured in air and upon immersion in Dow Corning 200 fluid , a dimethylpolysiloxane of known density , were used to calculate sample densities which are summarized in Table 4-2 . TABLE 4-1 ...
... approximately 10 g . Sample weights measured in air and upon immersion in Dow Corning 200 fluid , a dimethylpolysiloxane of known density , were used to calculate sample densities which are summarized in Table 4-2 . TABLE 4-1 ...
Page 100
... approximately geometrical , i.e. the fraction of crystallizable blocks with degree of polymerization X is ( 1 - p ) px - 1 , where X is a a positive integer and p is a constant in the range 0 to 1. No assumptions need need be made be ...
... approximately geometrical , i.e. the fraction of crystallizable blocks with degree of polymerization X is ( 1 - p ) px - 1 , where X is a a positive integer and p is a constant in the range 0 to 1. No assumptions need need be made be ...
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