Synthesis and characterization of hyperbranched copolyamides from AB,AB_2 and B_3 monomers by direct melt-polycondensation

摘要

Ever since the original findings of Denkewalter and Tomalia,the amide linkage has been a recurrent moiety in dendritic polymer chemistry.Boty perfect polyamide dendrimers or less defined hyperbranched polymers have been reported.The latter were synthetized either out of specially desngined AB_2 monomers by melt or solution condensation or out of readily available monomers but only by solution polymerization.