Reaction mechanism to long-chain branched PP

We have shown in the present article, starting from the high capacity PP's on the market, the development of long-chain branched PP which means melt s trength PP. As a basis, the radical mechanism were used to synthesize long- chain branched PP. Most known is the process at low temperature by using el ectron-beam-irradiation developed by Montell. It is shown that by using com onomers like styrene and vinylsiloxan also long-chain branched structures a re produceable. To prove the melt strength, the melt rheology in dependence of shear rate, as well as the tensile force via velocity of the melt with the Rheotens-apparatus, are described.