| 초록 |
Self-assembly of block copolymers from evaporative emulsion allows the production of various microparticles with well-defined shape and nanostructures. In this research, we investigate the self-assembly of pH-responsive block copolymers, polystyrene-block-poly(4-vinyl pyridine), which shows the swelling/deswelling behavior in response to the changes in acidity. While no particles were produced at high pH conditions, a decrease in the pH value led to an increase in the overall amphiphilicity of the PS-b-P4VP, resulting in the successful production of spherical or porous particles. The effects of the solvent, molecular weight, and volume fraction of block copolymers on particle formation were investigated. |
