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Synthesis and characterization of aliphatic-aromatic aromatic hyperbranched polyesters

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4 Author(s)
Tang, Limine ; Department of Chemical Engineering, Tsinghua University, Beijing 100084, China ; Zhang, Xiaolonq ; Qiu, Teng ; Liu, Deshan

Hyperbranched polymers possess special architectures and have potential applications in various areas. In this study, two AB2 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 'H-nuclear magnetic resonance (1H-NMR), differential scanning calorimetry (OSC), 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.

Published in:

Tsinghua Science and Technology  (Volume:7 ,  Issue: 1 )