Get access

Surface functionalization of polyolefin films via the ultraviolet-induced photografting of acrylic acid: Topographical characterization and ability for binding antifungal agents

Authors

  • Vanina Costamagna,

    1. Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba (5000), Argentina
    Search for more papers by this author
  • Daniel Wunderlin,

    1. Centro de Química Aplicada, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba (5000), Argentina
    Search for more papers by this author
  • Maider Larrañaga,

    1. Materials and Technologies' Group, Departamento Ingeniería Química y Medio Ambiente, Escuela Universitaria Politécnica, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Plaza Europa, 1, 20018 Donostia-San Sebastian, Spain
    Search for more papers by this author
  • Iñaki Mondragon,

    1. Materials and Technologies' Group, Departamento Ingeniería Química y Medio Ambiente, Escuela Universitaria Politécnica, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Plaza Europa, 1, 20018 Donostia-San Sebastian, Spain
    Search for more papers by this author
  • Miriam Strumia

    Corresponding author
    1. Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba (5000), Argentina
    • Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba (5000), Argentina
    Search for more papers by this author

Abstract

The photoinduced graft copolymerization of acrylic acid with ultraviolet radiation onto films of poly(vinyl chloride), polypropylene, and polyethylene was studied. Benzophenone was used as the initiator for most of the experiments performed. The percentage of grafting was determined by gravimetric measurements, and the characterization of the grafted films was carried out by chemical analysis (Fourier transform infrared spectroscopy, volumetric titration, and dye adsorption). In all samples, the grafted yield increased with the ultraviolet exposure time. High levels of grafting were obtained at room temperature. In addition, optical and atomic force microscopy allowed the topography of the modified films to be studied as a function of the reaction time. The pendant functional groups that were grafted were then used to bind antifungal agents, such as natamycin and crystal violet, and the antifungal properties of the films were demonstrated. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102:2254–2263, 2006

Ancillary