Syntheses of poly(methyl methacrylate)/poly(dimethyl siloxane) graft copolymers and their surface enrichment of their blend with acrylate adhesive copolymers

摘要

Several types of poly(methyl methacrylate)/poly(dimethyl siloxane) graft copolymers (PMMA-g-PDMS) were synthesized using macromonomer technology. Three types of PMMA-g-PDMS with different PDMS chain length were obtained. The effect of siloxane chain length on surface segregation of PMMA-g-PDMS/poly(2-ethylhexyl acrylate-co-acrylic acid-co-vinyl acetate)[P(2EHA-AA-VAc)] blends was investigated. The blends of PMMA-g-PDMS with P(2EHA-AA-VAc) showed surface segregations of PDMS components. The surface enrichments of PDMS in the blends depended on the PDMS chain length, significantly. (C) 2002 Wiley Periodicals, Inc. [References: 18]