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 i...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±23×10^(-3)g.mm.kPa^(-1).h^(-1).m^(-2)compared with control(CH/AG)was 0.129±81×10^(-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).展开更多
基金supported by National Research Centre(NRC),Cairo,Egypt and has been provided with funding support(NRC).
文摘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±23×10^(-3)g.mm.kPa^(-1).h^(-1).m^(-2)compared with control(CH/AG)was 0.129±81×10^(-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).
