Synthesis of nano-ZnO/poly(methyl methacrylate) composite microsphere through emulsion polymerization and its UV-shielding property |
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Authors: | Erjun Tang Guoxiang Cheng Xingshou Pang Xiaolu Ma Fubao Xing |
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Institution: | (1) School of materials science and engineering, Tianjin University, Tianjin, 300072, China |
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Abstract: | Nano-ZnO/poly(methyl methacrylate)(PMMA) composite latex microspheres were synthesized by in-site emulsion polymerization.
The interfacial compatibility between nano-ZnO particles and PMMA were improved by treating the surface of nano-ZnO particles
hydrophobically using methacryloxypropyltrimethoxysilane (MPTMS). TEM indicated that nano-ZnO particles present in nanosphere
and have been encapsulated in the PMMA phase. FT-IR confirmed that MPTMS reacted with the nano-ZnO particle and copolymerized
with MMA. It was clearly found from SEM that ZnO nanoparticles can be homogeneously dispersed in the PVC matrix. The absorbance
spectrum of the nanocomposite polymer suggested that increasing the amount of nano-ZnO in composite particles could enhance
the UV-shielding properties of the polymers. The nano-ZnO/PMMA composite particle could eliminate aggregation of ZnO nanoparticle
and improve its compatibility with organic polymer. This means that the composite particles can be widely applied in lots
of fields. |
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Keywords: | Nano-ZnO Nanocomposite Poly(methyl methacrylate) In-site emulsion polymerization Methacryloxypropyltrimethoxysilane (MPTMS) |
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