Abstract
Polyvinylchloride fiber was decomposed by ultra-violet ray in vacuum system. From the results, the reaction rate, υp, is expressed as follows were, K is a constant, (Pa) is amorphous region content in sample fiber, and φ(I) is intensity of absorbed ray.
at the photodecomposition of the undrawn fiber, activation energy is about 14 kcal/mol, which agrees with the one obtained from thermal decomposition of same fiber.
The following relation between the liberated hydrogen chloride volume x, and time t, is obtained k and m are constants, a is initial polymer content.
