Poly(vinyl fluoride) polymers prepared at different polymerization temperatures have been examined in the melt, oriented, and solid state by infrared spectroscopy. Bands arising from the head‐to‐tail and head‐to‐head‐tail‐to‐tail portions of the polymer have been isolated and assigned. The head‐to‐head‐tail‐to‐tail portion of the polymer crystallizes in the head‐to‐tail unit cell except for a portion of the 1,2‐difluorethylene units which apparently have the gauche (out‐of‐plane) structure. The head‐to‐tail portion of the polymer is nearly atactic, but is somewhat rich in syndiotactic chain structure. Bands arising from local syndiotactic order are observed.
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Koenig et al. (1966) studied this question.
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