Abstract
AbstractThe effect of the annealing temperature on the extension of thin film of syndiotacticityrich poly(vinyl alcohol)(PVAVTFA) derived from vinyl trifluoroacetate is investigated in water. For the samples annealed at the temperature of above 125°C, the time of initiation of elongation and Young's modulus increase steeply with the elevation of annealing temperature, and the time required to maximum elongation and the maximum elongation ratio decrease quietly. The elongation ratio at break during the elevation of temperature of water decreases with the increase in the annealing temperature, that is, from 6.5 to 1.5. Reversely, the temperature at break increases from 85 to 97°C, but it is minimum at the annealing temperature of 125°C.
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