Synthesis and characterization of PMMA grafted ZnO nanoparticles

By R. Hong, J. Qian, J. Cao. 2006

174 citations recorded by the source corpus.

ZnO nanoparticles were synthesized by homogeneous precipitation. To reduce the aggregation among ZnO nanoparticles, an effective surface modification method was proposed by grafting polymethyl methacrylate (PMMA) onto the ZnO particles. That is, the surface of ZnO nanoparticles was firstly treated with a KH570 silane coupling agent, which introduces functional double bonds onto the surface of ZnO nanoparticles, followed by radical grafting polymerization in non-aqueous medium. The obtained nanocomposite was characterized by Fourier transform infrared spectroscopy (FT-IR), thermogravimetry (TG), sedimentation test, scanning electron microscopy (SEM), and X-ray powder diffraction (XRD). Results of FT-IR and TG showed that the desired polymer chains have been covalently bonded to the surface of ZnO nanoparticles. It was found that the increasing monomer concentration could increase the grafting percentage and hence promote the dispersibility. The application of some surfactant is also helpful for dispersion. The viscous properties of nano-suspensions were investigated. The ZnO/PS nanocomposite was prepared by adding PMMA-grafted ZnO into styrene monomer, followed by radical grafting polymerization. The resulted nanocomposite was characterized by TG, DSC (differential scanning calorimetry) and XRD, and the testing results indicated that thermal behaviors of PS were obviously changed.

Subfields: Organic Chemistry, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/33c366e248521d1720a5e1c1c1842eeee88fdc37

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Citations in the corpus

Investigation of Photocatalytic Degradation of Methyl Orange by Using Nano-Sized ZnO Catalysts (2011, background): “In previous researches, the ZnO nanoparticles were ever modified by SiO2 [16], PMMA [17] and PSt [18], and the influence of particles on the mechanical properties of polymer matrix”
Synthesis and microstructural properties of ZnO nanoparticles prepared by precipitation method (2013, unknown): “602 surface energy of ZnO nanoparticles [31].”
Synthesis, surface modification and photocatalytic property of ZnO nanoparticles (2009, methodology): “In our previous research, the ZnO nanoparticles were modified by SiO2 [23], PMMA [25] and PSt [26], and the influence of particles on the mechanical properties of polymer matrix was studied.”