4.7 Article

Potential effect of citrate nanocellulose on barrier, sorption, thermal and mechanical properties of chitosan/Arabic gum packaging film

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FOOD BIOSCIENCE
卷 56, 期 -, 页码 -

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ELSEVIER
DOI: 10.1016/j.fbio.2023.103246

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Cellulose nanoparticles; Biocomposite; Barrier properties; Sorption properties; Wettability; Water sorption isotherm

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The objective of this study is to develop a green nanocomposite for reducing environmental pollution caused by petroleum-based packaging plastics. The results of the study demonstrate that the addition of citrate cellulose nanospheres can improve the mechanical properties and thermal stability of the nanocomposite.
Currently, the necessity to diminish environmental pollution caused by petroleum-based packaging plastics has encouraged interest in creating renewable and biodegradable packaging polymers. The objective of this study is the development of a green nanocomposite constructed from citrate cellulose nanospheres (CNC) that have been embedded in (CH/AG) Chitosan/Arabic gum (CNC@CH/AG) to meet the mechanical requirements. Citrate CNC was prepared using a citric acid/HCl acid mixture and it is investigated by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Transmission electron microscopy (TEM), Zeta potential, and degree of substitution. CNC@CH/AG film was investigated by FTIR, XRD, scanning electron microscope (SEM), wettability, mechanical, barrier, water vapor sorption, and thermal characteristics. CNC@CH/AG film displayed declining in water vapor permeability. The lowest water vapor permeability (WVP) value was 0.044 +/- 23 x 10-3 g. mm. kPa- 1. h-1. m- 2 compared with control (CH/AG) was 0.129 +/- 81 x 10-3 up to 3 mg CNC. For sorption properties, the CNC@CH/AG nanocomposite films are consistent with the GAB model, Smith, Henderson, and Peleg models. In comparison to CH/AG, the addition of CNC enhances all of the nanocomposites' tensile strength and Young's modulus by nearly two and three times, respectively, with a decrease in elongation percentage. The addition of CNC renders CNC@CH/AG nanocomposite films more thermally stable and the total activation energy of CNC@CH/AG nanocomposite film (-94.97 J/mol) is more than three times that CH/AG film (-34.04 J/mole).

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