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Hyperbranched polymers possess special architectures and have potential applications in various areas. In this study, two AB 2 monomers, dipropyl 5 (hydroxyethoxy) isophthalate (I) and 5 hydroxyethoxyisophthaic acid (II), were prepared. By bulk polycondensation of each monomer, two aliphatic aromatic hyperbranched polyesters were prepared and characterized by 1H nuclear magnetic resonance ( 1H NMR), differential scanning calorimetry (DSC), thermogravimetry analysis (TGA), and scanning electron microscopy (SEM). Compared with all aromatic hyperbranched polyesters, the prepared polymers showed lower glass transition temperatures in connection with the moderate decrease in their decomposition temperatures.
Hyperbranched polymers possess special architectures and have potential applications in various areas. In this study, two AB 2 monomers, dipropyl 5 (hydroxyethoxy) isophthalate (I) and 5 hydroxyethoxyisophthaic acid (II), were prepared. By bulk polycondensation of each monomer, two aliphatic aromatic hyperbranched polyesters were prepared and characterized by 1H nuclear magnetic resonance (1H NMR), differential scanning calorimetry (DSC), thermogravimetry analysis (TGA), and scanning electron microscopy (SEM). Compared with all aromatic hyperbranched polyesters, the prepared polymers showed lower glass transition temperatures in connection with the moderate decrease in their decomposition temperatures.