Poly(vinylidene chloride-methyl acrylate)-b-poly(acrylic acid) (PVDC-b-PAA) block copolymers with different compositions were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization

and their micellization behavior was investigated by dynamic light scattering

surface tension measurement and transmission electron microscope analysis.It was found that PVDC-b-PAA copolymers could be self-assembled to form transparent micelle aqueous solutions by dissolving of the copolymer in N

N-dimethylformamide and dialysis by water.The critical micelle concentrations of PVDC-b-PAA copolymers were ranged from 9.9 to 19.6 mg/L

and increased with increasing PAA content in the copolymer.The micelles were almost in spherical morphology with a size range of 70.9~110.9 nm and with narrow size distributions.The pH value of aqueous phase affected the zeta potential and aggregation of micelles.When pH value was decreased from 3 to 1

the zeta potential of micelles was changed from a negative value to a positive value

the aggregation degree and the average size of micelle aggregates were rapidly increased

and the size distribution became wider.