Poly(lactic acid)‐modified films for food packaging application: Physical, mechanical, and barrier behavior

Abstract

Poly(lactic acid) (PLA) is now a very attractive polymer for food packaging application because in addition of being thermoplastic, biodegradable, compostable, and produced from renewable resources, it shows same behavior in mechanical, thermal, and barrier properties comparable to the most used synthetic polymers like polystyrene and poly(ethylene terephthalate). In this work, we take into consideration four commercial PLA films, natural‐ and surface‐modified, to make a correlation between mechanical, thermal, and barrier properties due to the surface modification, to well understand whether PLA is adapt to packaging application, especially in the food field. Films were studied by tensile testing, simultaneous differential thermal analysis/thermogravimetry, differential scanning calorimetry, permeation to carbon dioxide and oxygen at different temperature (7 and 23°C) and FTIR spectroscopic analysis. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

Poly(lactide-co-trimethylene carbonate) and Polylactide/Polytrimethylene Carbonate Blown Films

“…The peak at 868 cm −1 can be assigned to the amorphous phase and the peak at 756 cm −1 to the crystalline phase. Similar theory has been reported in the literature [22,23]. However, we find that with the increase of TMC or PTMC, the band at 2946 cm −1 decreases.…”

Characterization of PLA-limonene blends for food packaging applications

“…3, being arbitrarily offset for comparison. The spectrum region between 3000 cm -1 and 2860 cm -1 is characterized by -CH stretching bands [33]; this region shows a high absorption for PLA, with the intensities of these peaks decreasing with increase of limonene content. There is also a broad absorption due to the absorption of cyclohexene group at ≈ 3000 cm -1 where overlap -CH peaks (Fig.…”

Polylactic acid as a biodegradable material for all-solution-processed organic electronic devices

“…In addition to that, PLA exhibits excellent biocompat-98 ibility, which is suggestive of possible applications in the 99 biomedical field [17]. At the moment, PLA is mostly used 100 for those applications regarding goods packaging, in partic-101 ular food packaging, either in the form of thin-films [18] or 102 bottles [19]. Surprisingly enough, in the scientific literature lamination of copper foils [21].…”