Abstract
Poly(lactic acid), PLA, was blended with multifunctional acrylate monomer (dipentaerythritol pentaacrylate) in various weight ratios (1:1 and 9:1). The reaction of photopolymerization of the acrylate monomer in poly(lactic acid) matrix was conducted to obtain semi-interpenetrating networks in the form of films dedicated for use in the packaging industry. Next, the PLA/polyacrylate films were exposed to UVC radiation in order to examine their photostability under the influence of high energy radiation, which can be used as sterilizing factor. In these studies, the following methods have been applied: contact angle measurements, X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). These methods made it possible to determine the influence of sample composition on the surface properties and photochemical resistance. It was found that PLA was the most susceptible to UVC-irradiation among the studied samples. In PLA/polyacrylate films UV light induced a slight increase in surface roughness and only negligible changes in surface polarity and chemical composition. The mechanism of photodegradation in the tested specimens was also discussed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
