Preparation and Performance of Biodegradable Poly(butylene adipate-co-terephthalate) Composites Reinforced with Novel AgSnO2 Microparticles for Application in Food Packaging

Abstract

Biodegradable composites with antimicrobial properties were prepared with microparticles of silver stannate (AgSnO2) and poly(butylene adipate-co-terephthalate) (PBAT) and tested for applications in food packaging. The PBAT matrix was synthesized and confirmed by 1H-nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, and X-ray diffraction (XRD). Ultrasonic and coprecipitation methods were used to synthesize AgSnO2. A two-step mixing method and a solvent cast technique were utilized to fabricate the PBAT composites (different weight % of AgSnO2) for packaging foods. Attenuated total reflection-infrared spectroscopy, X-ray photoelectron spectroscopy, XRD, and scanning electron microscopy were used to investigate the formation, structure, and size of the composites. Thermogravimetric analysis and differential thermal calorimetry were used to examine the PBAT/AgSnO2 composites. The best characteristics are exhibited in 5.0 wt. % AgSnO2 loaded PBAT composite. The tensile strength, elongation at break, water vapor transmission rate, and oxygen transmission rate were 22.82 MPa, 237.00%, 125.20 g/m2/day, and 1104.62 cc/m2/day.atm, respectively. Incorporating AgSnO2 enhanced the hydrophobicity of the PBAT materials as evaluated by the water contact angle. The 5.0 wt. % AgSnO2/PBAT film shows a favorable zone of inhibition against the bacteria pathogens S. aureus and E. coli, according to an evaluation of its antimicrobial activity. The weight loss of 5% AgSnO2/PBAT film was 78.4% after eight weeks in the natural soil environments. In addition, the results of food quality studies recommend that AgSnO2/PBAT (5.0 wt. %) film had a longer food shelf life than the neat PBAT and commercial, increasing it from one to 14 days for carrot vegetables.

Synthesis of Biodegradable and Antimicrobial Nanocomposite Films Reinforced for Coffee and Agri-Food Product Preservation

“…5,11 Biodegradable natural polymer films, e.g., starch films, offer alternatives to conventional packaging due to their excellent biodegradability, biocompatibility, renewability, and ease of processing with a wide range of potential applications. 12 Shende et al 11 reported that silver-doped titanium dioxide nanoparticles (NPs) encapsulated with the chitosan−poly-(vinyl alcohol) (PVA) film offer very high synergistic antimicrobial activity, which is similar to the study of Usman et al 13 for polymer PVA/GO/starch/Ag nanocomposite films. Silver nanoparticles are highly reactive due to a large surfaceto-volume ratio.…”

“…Polymeric nanoparticles, such as alginate, nanocurcumin, and chitosan, also show antimicrobial activities . Nanoparticles can be used to make versatile materials for packaging and coating in the food industry. , Biodegradable natural polymer films, e.g., starch films, offer alternatives to conventional packaging due to their excellent biodegradability, biocompatibility, renewability, and ease of processing with a wide range of potential applications . Shende et al reported that silver-doped titanium dioxide nanoparticles (NPs) encapsulated with the chitosan–poly­(vinyl alcohol) (PVA) film offer very high synergistic antimicrobial activity, which is similar to the study of Usman et al for polymer PVA/GO/starch/Ag nanocomposite films.…”

Preparation and Antimicrobial Characterization of Poly(butylene adipate-co-terephthalate)/Kaolin Clay Biocomposites

“…The preparation of PBAT/kaolin composites via solution mixing and drop casting [ 36 ] is shown in Figure 1 . In 100 mL of chloroform, 2.0 g of PBAT polymer pellets were dissolved over a period of constant stirring to form a clear solution.…”

Influence of polymer solution composition on the microstructure and thermal and mechanical characteristics of polycaprolactone films

“…1,2 Biodegradable polymers can be either natural such as starch, cellulose, poly(butylene adipate-co-terephthalate), or synthetic like polylactide (PLA) polyhydroxyalkanoates, and polycaprolactone (PCL). [3][4][5][6] PCL is a common biocompatible, biodegradable, hydrophobic, and flexible linear aliphatic polyester. 7 The degradation of PCL in the human body proceeds by hydrolysis of the aliphatic ester bonds to produce natural and nontoxic metabolites.…”

“…In recent years, biodegradable polymers have received much attention as potential alternatives to nonbiodegradable polymers and plastics as they can be easily degraded in the environment by microorganisms leading to less accumulation of polymer waste and consequently less pollution 1,2 . Biodegradable polymers can be either natural such as starch, cellulose, poly(butylene adipate‐co‐terephthalate), or synthetic like polylactide (PLA) polyhydroxyalkanoates, and polycaprolactone (PCL) 3–6 . PCL is a common biocompatible, biodegradable, hydrophobic, and flexible linear aliphatic polyester 7 .…”