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A study on the synthesis of acrylic composite particles and investigation of their characterization 总被引:1,自引:0,他引:1
Core-shell latexes were synthesized by sequential emulsion polymerization of methyl methacrylate (MMA), styrene (St), and
ethyl acrylate (EA) in the presence of anionic surfactant, and the characteristics of these latexes were evaluated. The core
latex had to be synthesized carefully to avoid the formation of secondary particles. The sequential polymerization method
adopted for this synthesis took advantage of stabilizing particles grown during shell polymerization. In core-shell latex
polymerization, to suppress the generation of new particles and to minimize the gelation during the shell polymerization,
the amount of surfactant (Sodium dodecyl benzene sulfonate: SDBS) should be reduced to the minimum, 0.01 wt% and 0.02 wt%
of SDBS to amount of monomer, respectively, when the Polymethyl methacrylate (PMMA) and Polystyrene (PSt) core latexes are
prepared. In addition, the monomer pre-emulsion method is better than monomer-add method. The core-shell structure for composite
latex synthesized was demonstrated by Particle Size Analysis (PSA), Differential Scanning Calorimeter (DSC), Transmission
Electron Microscope (TEM), formability of film, and hydrolysis under NaOH solution. 相似文献
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