Abstract: Aseries of poly (methyl methacrylate-methacrylic acid)/poly (ethylene oxide) intermacro-molecular complex has been successfully prepared through hydrogen bonding by mastication through a twin-roller. The experimental results show that the the complex can not be extracted by methanol and has a better thermal stability as compared with its constituent. The complex is an efficacious compati-bilizer for quite a few polymer blend systems. PMMA/PEO (67/33) after blending with a small amount of the complex [PMMA/PEO/P(MMA-MAA)/PEOcomplex), 63/30/7] is plasticized quite well, and its mechanical properties get improved. SEMand TEM observations reveal that the presence of P(MMA-MAA)/PEO complex will reduce the size of the domains and increase the homogeneity of the system.

Key words: Poly (methyl methacrylate-methacrylic acid), Poly(ethylene oxide), Hydrogen bonding complex, Compatibilizing effect