Synthesis, characterization and associative properties of triblock and diblock perfluorinated poly(acrylamide)s

Summary A triblock perfluorinated poly(acrylamide) was produced by polymerization of acrylamide at 82 °C in acetonitrile using a di functional azo-derivative initiator bearing fl uorinated groups. The presence of triblock structures was rev ealed by GPC analyses by changing the nature of the solvent. Fractionation of a poly(acrylamide) sample allowed us to isolate the triblock fractions from the diblock ones. Polymerization with a small amount of initiator led to a sample with few triblock structures compared to a polymerization with a large amount of initiator. It can be concluded from this that acry lamide rather gives disproportionation according to the literature and that triblock formation comes from primary radical termination.