Phase Behavior of Blends of Poly (Ethylene Glycol) with MMA/EOEMA Copolymer

The phase behavior of Poly Ethylene Glycol (PEG) with Methyl Methacrylate and 2-Ethoxy Ethylmethacrylate (MMA/EOEMA) copolymer was investigated using viscometric, FT-IR, DSC thermal analysis and surface morphology studies. The studies were carried out at various blend compositions with chloroform as common solvent. From the viscosity data based on sign convention involved in the criterion, the values of μ and α for PEG with copolymer blends system was computed and found to be partially positive indicating it is partially phase separation for all blends composition. The phase separations of the blends were also supported by DSC thermal analysis method. The properties of specific, intermolecular and hydrogen bonding interactions of PEG with copolymer blends are studied by spectroscopic techniques such as FT-IR and the obtained results were further confirmed by surface morphology studies. The phase separation behaviour of the copolymers with PEG blend is clearly visible from the Scanning Electron Microscopy patterns.