DSC Step Annealing for Fingerprinting Molecular Structure in PVDF

摘要

DSC step annealing is explored to study the fine molecular structure of poly(vinylidene fluoride) (PVDF) homopolymers and copolymers. The melting pattern, obtained after step annealing, is a characteristic fingerprint for small variations in structure, as opposed to standard (heat-cool-reheat) DSC measurements. This fingerprint allows detection of variations in the polymerization process, the molecular weight of the polymer, the fraction and the nature of the co-monomer.