SciELO - Scientific Electronic Library Online

vol.87 issue1Identification of layers present in a contemporary ceramic using laser-induced plasma spectroscopyThin films of ZnSe modified with Fe2+ and Cu2+ for photoelectrocatalysis of methyl orange with active chlorine species author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




  • Have no cited articlesCited by SciELO

Related links

  • Have no similar articlesSimilars in SciELO


Revista de la Sociedad Química del Perú

Print version ISSN 1810-634X


PUCA-PACHECO, Mercedes; NEIRA-VELAZQUEZ, M. Guadalupe  and  CANCHE-ESCAMILLA, Gonzalo. Mechanical characterization of polymeric films based on copolymers of styrene and butyl acrylate obtained by heterogeneous polymerization in semicontinuous. Rev. Soc. Quím. Perú [online]. 2021, vol.87, n.1, pp.68-79. ISSN 1810-634X.

The aim of this work was to synthesize copolymers of styrene (St) and butyl acrylate (AB) cross-linked with allyl methacrylate by semicontinuous heterogeneous polymerization in order to study the mechanical properties of the polymeric films prepared from the latexes obtained. Copolymer latexes were stable and nanoparticles with spherical morphology were observed by Transmission Electron Microscopy (TEM). The latexes had final conversions between 92,5 and 97,0%, which were determined by the gravimetric method, and a solids content close to 20%. The nanoparticles of latex had an average diameter of 59,1; 55,1 and 49,0 nm for monomer dosing rates of 0,75; 0,45 and 0,15 g/min, respectively.

By means of mechanical characterization of the polymeric films and according to the statistical analysis, it was found that when the monomer dosage rate decreased in the synthesis, the mean particle diameter and molecular weight also decreased, and with it a decrease in its Young's Modulus (MPa).

Keywords : Polystyrene; polymeric films; mechanical properties; semicontinuous; polymerization.

        · abstract in Spanish     · text in English     · English ( pdf )