Resumo

PUCA PACHECO, Mercedes; NEIRA VELAZQUEZ, María Guadalupe  e  CANCHE ESCAMILLA, Gonzalo. Permeabilities comparison of polymer film ps/pba synthesized by polymerization in emulsion and microemulsion. Rev. LatinAm. Metal. Mater. [online]. 2016, vol.36, n.2, pp.192-200. ISSN 0255-6952.

In this work we have studied the permeability of polymer films that had a core and shell composed by polystyrene and poly (butyl acrylate) in a mass relation of 40 and 60, respectively. Permeability coefficient measurements were made in the Permeation Chamber "Voyager". The permeated gases were nitrogen, oxygen, methane and carbon dioxide at a temperature of 35 °C and pressures of 2 and 4 atmospheres. According to the results, the permeabilities of the films using latex obtained by polymerization in microemulsion were lower compared to those obtained using latex core-shell polymer obtained by emulsion polymerization and this is due to that smaller diameter nanoparticles were obtained by microemulsion polymerization than those obtained by emulsion. Also, a direct relationship between the coefficient of permeability of gases with critical temperatures of the gases was found.

Palavras-chave : permeability; polymeric films; polymerization.

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