Multifunctional Smart Conducting Polymers–Silver Nanocomposites-Modified Biocellulose Fibers for Innovative Food Packaging Applications

Abstract

In recent decades, food-packaging markets have attracted researchers' interest in many ways because such industries can directly affect human health. In this framework, the present study emphasizes the interesting and smart properties provided by new nanocomposites based on conducting polymers (CPs), silver nanoparticles (AgNPs), and cellulose fibers (CFs) and their possible applications as active food packaging. Polyaniline and poly(3,4-ethylenedioxythiophene) containing AgNPs were elaborated on via a simple one-step in situ chemical oxidative polymerization on CFs. Spectroscopic and microscopic characterization allowed a full discussion of the morphology and chemical structure of the nanocomposites and confirmed the successful polymerization of the monomer as well as the incorporation of AgNPs into the CP-based formulation. This study aims to demonstrate that it is possible to produce a highly efficient package with enhanced protective properties. Thus, the synthesized nanocomposites were tested as volatile organic compounds, sensors, and antibacterial and antioxidant agents. It is shown that the elaborated materials can, on the one hand, inhibit the development of biofilms and decrease the oxidation reaction rate of foodstuffs and, on the other hand, detect toxic gases generated by spoiled food. The presented method has unlocked massive opportunities for using such formulations as an interesting alternative for classical food containers. The smart and novel properties offered by the synthesized composites can be operated for future industrial applications to prevent any degradation of the packaged products by offering optimum protection and creating an atmosphere that can extend the shelf life of foodstuffs.

Synthesis and characterization of new composite from modified silica-coated MnFe2O4 nanoparticles for removal of tetracycline from aqueous solution

“…The crystal structure of the synthesized adsorbent was analyzed by performing X-ray diffraction (XRD) on Bruker D8 ADVANCE X-ray diffractometer with Cu Kα radiation ( λ = 1.5418 Å) operated at 40 kV and 40 mA. The average size of composite particles is also estimated via Debye–Scherrer ( eqn (1) ): 26 where D is the average size, λ is the X-ray source wavelength (1.54 Å), β is the full width at half maximum (FWHM) of the diffraction peak and θ is the Bragg's angle. The surface morphology of the synthesized compounds was recorded with a scanning electron microscope (LECO SEM, Michigan, USA).…”

Phytosynthesized-Silver Nanoparticles for Functionalization of Cotton Fabric: A Systematic Literature Review

“…This conductive property will make textiles usable for electrical functions. For example, smart garments or wearable sensors for personalized healthcare, smart food packaging, or energy conversion and storage (El Guerraf et al, 2023;Afroj et al, 2020;Yun et al, 2013). Some conductive polymers, such as polypyrrole, polyanilines, and polythiophenes, have been applied to fibers to develop phi-conjugated conductive fibers (Zeng et al, 2014).…”

High-Barrier Poly(butylene succinate-co-terephthalate) Blend with Poly(lactic acid) as Biodegradable Food Packaging Films

“…The blown films of PBST/PLA were prepared using laboratory-scale blown film extrusion (Zhangjiagang Lianjiang 1 H NMR (AVANCE II 400 M, Bruker, Germany) at a frequency of 400 MHz. Chemical shifts were recorded relevant to tetramethylsilane (0.0 ppm), and CDCl 3 was used as the solvent.…”

“…Thermal parameters including the glass transition (T g ), melt transition (T m ), and cold crystallization temperatures (T cc ) were obtained from DSC curves. The crystallinity (χ c %) of PLA or PBST in the samples was determined by eq 1 27 (1) where ΔH m is the sample melting enthalpy, ΔH cc is the enthalpy of cold crystallization, W is the mass fraction of PLA or PBST in the blend, and ΔH m 0 is the theoretical melting enthalpy of 100% crystalline polymer. The ΔH m-PLA 0 and ΔH m-PBST 0 values of PLA and PBST were 93.6 and 145.5 J/g, respectively.…”

“…As an indispensable product in people’s daily life, various multifunctional films have been applied in many fields such as biomedicine, electronic appliances, chemical separation, packaging, and agricultural coverage. − However, with the extensive application of disposable plastic products, the problem of “white pollution” has attracted considerable attention all around the world. In response to the “plastic limit” policies and regulations, environmentally friendly and degradable plastic films have become a research hotspot. , …”