Kou HG, Asif A, Shi WF (2002) Photopolymerizable acrylated hyperbranched polyisophthalesters used for photorefractive materials I. Synthesis and characterization. European Polymer Journal 38(10), 1931-1936. [In English]
Web link: http://dx.doi.org/10.1016/s0014-3057(02)00105-2
Keywords:
hyperbranched polymer; polyisophthalester; graded-index polymeric; material; photopolymerization kinetics; chromophores; reactivity; kinetics;
Abstract: UV-curable acrylated hyperbranched prepolymers with different numbers of acrylic end-groups were synthesized by modifying the hyperbranched polyisophthalester (HPIPE) with hydroxyethyl acrylate and P-naphthol, and characterized by FT-IR, H-1 NMR and VPO measurements. The effect of naphthyl end-group concentration of the prepolymer on their refractive index (RI) was investigated by an Abel Refractive Apparatus. It was found that the RI increases gradually as naphthyl end-group concentration increases. The acrylate-modified HPIPEs with or without co-monomer trimethylolpropane triacrylate addition were photopolymerized rapidly in the presence of a photo-fragmenting initiator under UV irradiation. Thermal properties of the UV-cured films were also studied by DMTA and TGA measurements. (C) 2002 Elsevier Science Ltd. All rights reserved.
