Synthesis and Application of UV-Curing Materials Based on Hyperbranched Polymers

Abstract

This paper reviews synthesis and property of UV-curing materials based on hyperbranched polymers containing radical polymerizable groups acrylate and methacrylate at the ends. The hyper branched polymers could be synthesizded by A₂ + B₃ and AB₂ methods by various polymerization systems, such as ene-thiol reaction, [2 + 2]cycloaddition reaction, radical polymerization, polyaddition reaction and polycondensation reaction. The radical-polymerizable groups could also be introduced into the synthesized hyperbranched polymers to give corresponding UV-curing hyperbranched polymers. Furthermore, UV curing reactions of the synthesized UV-curing hyperbranched polymers were examined in the presence of photo-radical initiators in the film state by the UV irradiation and followed by heat at elevated temperature, yielding the corresponding cured films smoothly. The thermal stability and mechanical property of the obtained cured films were also examined, and their properties were superior to those of corresponding linear UV-curing polymers.