Study on gradient domain structure in blend films of poly(2-ethylhexyl acrylate)/poly(methyl methacrylate)-graft-poly(dimethyl siloxane)

摘要

The morphology on cross sectional blend films of poly (2 - ethylhexyl acrylate) [P (2ERA)]/ Poly (methyl methacrylate)-graft-poly(dimethyl siloxane) (PMMA-graft-PDMS) was investigated. It was found at with PMMA-graft-PDMS-rich composition, blend film shows gradient domain structure and in the middle composition, hi-layer structure were observed. On the other hand, homogeneously dispersed sea-island structure was observed in P(2EHA)-rich composition. In addition, as increasing degree of polymerization of PDMS in graft copolymer, the gradient domain structure in P(2EHA)/PMMA-graft-PDMS blends seemed to become hi-layer structure.