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Abstract
Radiation initiated post-polymerisation of trioxane has been studied by irradiating the super dry monomer at dry ice temperature and annealing them at higher temperatures. The mode of termination is presumed to be predominantly by chain transfer to the monomer. Kinetic expression has been derived for the same. Using the rate constant ratio k tr/k p from the data on in-source polymerisation the molecular weights were calculated to be of the order of 3.6 × 105. This was experimentally observed for various conversions.