Polymer nanoemulsion was prepared by high shear emulsion polymerization and its particle diameter was determined. The results showed that the particle diameter reduced with the increase of reaction temperature, initia...Polymer nanoemulsion was prepared by high shear emulsion polymerization and its particle diameter was determined. The results showed that the particle diameter reduced with the increase of reaction temperature, initiator concentration, water content and stirring speed. The optimal ratio of constituents of nanopaints each to other was obtained by orthogonal factorization experiments, and the nanopaint with appropiate viscosity and excellent storage stability was prepared when it contains 0.2% of dispersant, 4.7% of alkaline swelling polyacrylate emulsion thickener and 1.4% of nonionic associative polyurethane thickener.展开更多
Polymer nanoparticles were prepared in the methyl methacrylate (MMA)/buty lmethacrylate (BA) emulsion copolymerization process by a modified microemulsion copolymerization method. 2-Hydroxyethyl methacrylate(HEMA), ac...Polymer nanoparticles were prepared in the methyl methacrylate (MMA)/buty lmethacrylate (BA) emulsion copolymerization process by a modified microemulsion copolymerization method. 2-Hydroxyethyl methacrylate(HEMA), acrylate (AA) and methyl acrylate (MAA) were used as reactive cosurfactants. With this process high polymer: surfactant weight ratios (40:1 or greater),relatively concentrated (~30wt. %) latexes and small (~60nm) particle diameters were obtained.Properties of the latexes were characterized by TEM, DSC, dynamic light scattering, and IR spectroscopy.展开更多
文摘Polymer nanoemulsion was prepared by high shear emulsion polymerization and its particle diameter was determined. The results showed that the particle diameter reduced with the increase of reaction temperature, initiator concentration, water content and stirring speed. The optimal ratio of constituents of nanopaints each to other was obtained by orthogonal factorization experiments, and the nanopaint with appropiate viscosity and excellent storage stability was prepared when it contains 0.2% of dispersant, 4.7% of alkaline swelling polyacrylate emulsion thickener and 1.4% of nonionic associative polyurethane thickener.
基金CEM Foundation For N & T Joint Academy (Chinese Education Ministry Foundation for Nankai University and Tianjin University Joint Academy)
文摘Polymer nanoparticles were prepared in the methyl methacrylate (MMA)/buty lmethacrylate (BA) emulsion copolymerization process by a modified microemulsion copolymerization method. 2-Hydroxyethyl methacrylate(HEMA), acrylate (AA) and methyl acrylate (MAA) were used as reactive cosurfactants. With this process high polymer: surfactant weight ratios (40:1 or greater),relatively concentrated (~30wt. %) latexes and small (~60nm) particle diameters were obtained.Properties of the latexes were characterized by TEM, DSC, dynamic light scattering, and IR spectroscopy.