The design and synthesis of novel linear-dendritic and amphiphilic block copolymers with a linear PAA as hydrophiphilic block and a dendritic poly (benyl ether) as hydrophobic block were described. The synthetic process consists of two steps, the PMA-poly(benzyl ether) dendrimers were synthesized using atom transfer radical polymerization (ATRP), and then the amphiphilic block copolymers, PAA- poly (benzyl ether) dendrimers, were obtained through hydrolysis of linear PMA block into PAA. These block copolymers were characterized by ^1H NMR, FT-IR and SEC, and exhibit well-defined architectures and low polydispersities.

Key words: BLOCK COPOLYMER, POLYACRYLIC ACID