Collect. Czech. Chem. Commun. 1989, 54, 1269-1275

Cationic modifications of polyalkenes II. Effect of a single or continuous supply of Co-initiator

Miloslav Kučera, Dušan Kimmer, Karla Majerová and Zdeněk Fiala

Chemopetrol, Research Institute of Macromolecular Chemistry, 656 49 Brno


For an effective modification of polyalkenes leading to the formation of block and/or graft copolymers, the presence of co-initiating water is absolutely necessary. We have compared two procedures used in the co-initiation of cationic reactions on polymers. Gradually supplied air moisture raises the efficiency of modification of isotactic polypropylene with poly(oxyethylene) several times, compared with a single addition of co-initiating water.