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Effect of particle size on the mechanical properties of polystyrene and poly(butyl acrylate) core/shell polymers |
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| Authors: | LA Pérez-Carrillo M Rabelero JE Puig F López-Serrano |
| Affiliation: | a Departamentos de Química e Ingeniería Química, Universidad de Guadalajara, M. García Barragán 1451, Guadalajara, Jalisco 44430, Mexico b Facultad de Química, Universidad Nacional Autónoma de México, México, D.F. 04510, Mexico c Centro de Investigación en Química Aplicada, Saltillo, Coah. 25253, Mexico |
| Abstract: | The effects of particle size and polymer location (core or shell) on the mechanical properties of core/shell materials composed of polystyrene (PST) and poly(butyl acrylate) (PBA) made by a two-stage emulsion or microemulsion polymerization process are reported. Low-seed content (LSC) latexes were made by batch polymerization in microemulsions stabilized with DTAB in the presence of an organic salt (dibutyl phosphite). High-seed content (HSC) latexes were produced by microemulsion or emulsion polymerization in semi-continuous process. These latexes were subsequently used to form core/shell particles of PST/PBA or PBA/PST and their mechanical properties were examined and compared. Our results indicate that core/shell particle size and the location of the polymers have important effects on the mechanical properties. |
| Keywords: | Core/shell polymer Particle size Mechanical properties |
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