According to the equation of cluster dynamics in reacting system

combining with the kinetics equatin of BA VAc emulsion copolymerization in batch and semi continuous process

the development of particle morphology was simulated.The results are as follows:1.For the batch process

when VAc homopolymer is beginning

some clusters are randomly distributed in the copolymer latex particle.With the increase of time

the clusters

which were growing by both polymerization and coagulation

migrated toward the surface of particle.At last

a single core-shell structure is formed.2.For the semi-continuos process

the final particle morphology revealed microphase separation structure

the faster the import speed of monomers

the greater the separated degree.During the slowest import speed

a multi-core-shell structure is formed.These simulation results are in agreement with the literature reports.