Tracer Studies of Oxidation-Reduction Polymerization and Molecular Weight of "Teflon" Tetrafluoroethylene Resin By courtesy of: K. L. BERRY AND J. H. PETERSON JACS, 1951, 5195 and recent end-group study: End groups in fluoropolymers Maurizio Pianca*, Emma Barchiesi, Giuseppe Esposto, Stefano Radice Journal of Fluorine Chemistry 95 (1999) 71-84