화학공학소재연구정보센터
Polymer Bulletin, Vol.74, No.5, 1879-1898, 2017
Efficient modification of nanosilica particles in preparation of anti-scratch transparent polyacrylic films through miniemulsion polymerization
Surface modification of silica nanoparticles was performed chemically by using glycidyl methacrylate and the conditions were optimized to reach to a reasonable efficiency. Nanocomposite particles containing the above modified nanosilica were prepared through miniemulsion polymerization in the presence of methyl methacrylate-butyl acrylate-methacrylic acid. Latex particle size and morphology were thoroughly investigated by DLS, SEM, AFM and TEM analyses. Results showed that the silica nanoparticles were well-dispersed in the polymer matrix to induce their properties remarkably. A quantitative EDX analysis was used for indirect assessment of the encapsulation efficiency and the encapsulation efficiency of silica nanoparticles was found 92 %. The obtained nanocomposite films were highly transparent according to the UV-Vis analysis and were able to transmit more than 80 % of visible light. Excellent scratch resistances of the nanocomposite films were obtained in the presence of silica nanoparticles due to the optimum dispersion and their friction coefficients were investigated.