Surface Functionalization of Polyolefin Films Via UV-Induced Photografting of Acrylic Acid. Topographical Characterization and Ability for Binding Antifungal Agents.

VANINA COSTAMAGNA, DANIEL WUNDERLIN, MAITE LARRAÑAGA, IÑAKI MONDRAGÓN AND MIRIAM STRUMIA.

Journal Applied Polymer Science

Wiley

Lugar: USA; Año: 2006 vol. 102 p. 2253 - 2264

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. 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. 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 102:2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: