Abstract
The elastic behaviors of the drawn/annealed thin films for syndiotactic-rich poly (vinyl alcohol), derived from vinyl trifluoroacetate, were studied by the repeated elongation/contraction cycles in water. For the drawn films annealed at temperatures below 125°C, the characteristic of deformation was divided into two regions in all cases, that is, low-elongated and high-elongated regions. The elastic deformation was dominant over the plastic deformation in the low-elongated region and vice versa in the high-elongated region. For the drawn films annealed at temperatures above 150°C, the characteristic of deformation was given roughly the high plastic deformation accompanying with elastic deformation.
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