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The study of surface segregation and the formation of gradient domain structure at the blend of poly(methyl methacrylate)/poly(dimethyl siloxane) graft copolymers and acrylate adhesive copolymers

“…Because polysiloxanes and their copolymers have very interesting properties such as elastomeric behavior; good thermal, UV, and oxidative stabilities; good weatherability; low surface energy; high gas permeability; biocompatibility; and electrical properties, they should be useful materials having surface segregations. [5][6][7][8] In our previous studies, 9 -13 surface segregation and gradient domain structure of poly(2-ethylhexyl acrylate-co-acrylic acid-co-vinyl acetate) [P(2EHA-AAVAc)]/poly(vinylidene fluoro-co-hexafluoro-acetone) [P(VDF-HFA)] blends were investigated. It was found that the P(VDF-HFA) component was enriched on the surface, and P(2EHA-AA-VAc)component was precipitated on the bottom (contact with substrate: PDMS-coated paper) by using SEM, attenuated total reflection (ATR)-FTIR, X-ray, photoelectron spectroscopy (XPS), and so on.…”