Photopolymerizable hyperbranched (meth)acrylated poly(amine ester)

Abstract

Abstract A hyperbranched (meth)acrylated poly(amine ester) (HPAE‐2‐A) was synthesized by the modification of the hydroxyl end groups of the second generation of a hyperbranched poly(amine ester) with acryloyl chloride and methacrylic anhydride. The photopolymerization kinetics were investigated with photo‐differential scanning calorimetry and Fourier transform infrared. The properties of HPAE‐2‐A, including the dynamic viscosity, pendulum hardness, and shrinkage, were also studied in comparison with those of a hyperbranched methacrylated poly(amine ester) (HPAE‐2‐MA) prepared in the laboratory and traditional epoxy acrylate and epoxy methacrylate. HPAE‐2‐A polymerized rapidly under UV irradiation in the presence of a photoinitiator and had a higher final conversion of double bonds. The thermomechanical properties of UV‐cured HPAE‐2‐MA films were compared with those of EB‐cured films measured with a dynamic mechanical thermal analyzer. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 87: 168–173, 2003