Journal of Applied Polymer Science · 1975 · 27 citations · 0 references
Natural SciencesChemistryMaterials ScienceAnalytical ChemistryPolymer ChemistryPolymer MaterialsChromatographyPolymer AnalysisPolymer CharacterizationPolymer Physical ChemistryPolymer PhysicsPolymer StructureCopolymer Composition AnalysisCopolymer Molecular Weight DistributionCopolymerizationMolecular Weight Dependence Of Polymer PropertiesMolecular Weight DeterminationPolymer Copolymer Composition AnalysisPolymer Molecular Weight DistributionPolymer Quantification
A gel permeation chromatograph using an infrared spectrometer detector is described. Operation in a stop-and-go fashion permits rapid determination of copolymer composition as a function of molecular weight. A broad distribution copolymer, poly(vinyl chloride–co–vinyl stearate), showed marked compositional changes with molecular weight. The changes observed are not in agreement with those predicted from reactivity ratios.