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>Kinetic studies on copolycondensation processes. V. Investigations on sequence distribution of fully aromatic copolyester by PMR spectroscopy
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Kinetic studies on copolycondensation processes. V. Investigations on sequence distribution of fully aromatic copolyester by PMR spectroscopy
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机译：Kinetic studies on copolycondensation processes. V. Investigations on sequence distribution of fully aromatic copolyester by PMR spectroscopy
AbstractPMR spectroscopy and lanthanide shift reagents were used to determine sequence distribution of units of poly(dimethyldian‐phenolphtalein)terephthalate. The calculated values of degree of randomness confirm the theory that the copolyester obtained at the isokinetic temperature (200°C) has random distribution of comonomer units and copolyesters obtained at temperatures above and below this temperature have a tendency to form block units along the macromolecular cha
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