Structure and properties of highly toughened biodegradable polylactide/ZnO biocomposite films

New PLA/ZnO:Cu/Ag bionanocomposites for food packaging

“…This is possible be due to a homogeneous distribution of ZnO:Cu/ Ag nanoparticles into PLA matrix and the high aspect ratio of nanoparticles that restrict the chain movements. A similar improvement in the mechanical properties of PLA film nanocomposites reinforced with both Ag-Cu alloy or ZnO nanoparticles has been reported [23,30].…”

“…A significant decrease in the intensity of bands was observed for PLA-bionanocomposites films containing 1 and 1.5% Zno:Cu/Ag NPs in respect with those of the plasticized PLA mainly for those with maximum at: 868, 895 cm -1 (corresponding to the coupling of C-C backbone stretching with the crystalline C-O-C vibration bands), 957 cm -1 (O-H vibration of carboxylic acid), 1267 cm -1 (C-O-C stretching), 1360, 1383 and 1749 cm -1 . With respect to plasticized PLA film, the increased intensity of bands was observed for ZnO:Cu/Ag 0.5% at 895 and at 957 cm -1 which signifies the formation of strong inter-component interactions and a good dispersion of nanoparticles and also that some changes in the polymer chain arrangements occured [30]. At the same time, the band at 1454 cm -1 decreased by 18% for PLA/ZnO:Cu/Ag 0.5% film, by 65% for PLA/ZnO:Cu/Ag 1% film and by 72% in the case of PLA/ZnO:Cu/Ag 1.5%, respectively, in comparison with plasticized PLA film.…”

Preparation and characterization of thermoplastic starches and their blends with poly(lactic acid)

“…Poly(lactic acid) (PLA), produced from the fermentation of annually renewable resources, has gained growing interests as an alternative to conventional synthetic polymers [3]. PLA possesses high modulus, high strength, excellent clarity, good biocompatibility and biodegradability, and all these merits make it become a promising polymer for a great variety of application, such as biomedical applications, industrial packaging and disposable tableware [4]. However, the wide applications of PLA have been hampered by its native defects, such as low heat distortion temperature, brittleness and poor impact resistance [5].…”

RETRACTED: Influence of alkali metal cations on the thermal, mechanical and morphological properties of rectorite/chitosan bio-nanocomposite films

“…These novel environmentally friendly materials open new scenarios for biodegradable polymers with potential perspectives in medicine, coatings, automotive and packaging applications, etc. (Jayaramudu et al, 2014(Jayaramudu et al, , 2013Ruiz-Hitzky, Aranda, Darder, & Ogawa, 2011;Wang, Du, Luo, Lin, & Kennedy, 2007;Xiaoying, Xiaofeng, Yumin, & Yan, 2008). Nanocomposites made of polysaccharides are abundant in nature, cost-effective, with green-friendly inorganic clay minerals exhibiting outstanding hybrid performance and have been recognized as layers can be exchanged easily by the usual environmental process.…”