A Simple Method for the Determination of Fluorine Contents in Fluoropolymers

The methods were developed for the decompesition of fluoropolymers and for the subsequent analysis of fluorine in them. Decomposition was accomplished by heating the polymer in the K2CO3 capsule in an electric furnace at 600C for 30 min. The K2CO3 capsule was prepared from casting molten salt in a carbon die. The fluorine, changed into KF, was dissolved in water and determined by using a fluoride sensitive electrode. The method was rapid and simple and was applicable to the routine fluorine analysis of organic compounds containing fluorine.