Research On Anti-Electrostatic Cellulose Packaging Membrane

In order to enhance the function of the cellulose membrane, improve the antistatic properties, expanding its application of anti electrostatic packaging aspects, this paper to wood cellulose as raw material was prepared by Fe₃O₄ cellulose composite packaging film co precipitation by using in situ, by means of X- - ray diffraction spectroscopy （XRD）, infrared spectroscopy（FTIR）, field emission scanning electron microscopy（FESEM）, thermogravimetric analyzer （DTG） and the vibrating sample magnetometer （VSM） studied the effects of different concentration of iron ion and theconcentration of sodium hydroxide on the structure andelectromagnetic properties of composite membrane, andto investigate the mechanical properties of the Fe₃O₄/cellulose composite packaging film, water resistance andantistatic properties. The main conclusions are as follows:（1）Fe₃O₄ can be more evenly attached to the cellulosefilm. With increasing the concentration of ferric ion,diffraction intensity cellulose composite membrane in XRD spectra of three characteristic peaks is gradually reduced,at the same time, the composite membranes appearedthe characteristic peaks of inverse spinel type Fe₃O₄.Infrared spectra of composite membrane absorption peak appears in 594 cm-1 Fe-O vibration on the position,and with the increase of iron ion concentration, the absorption peak was enhanced obviously.（2） Relative to the cellulose membrane, compositemembrane appeared two obvious TG regiondecomposition temperature at the same time, thermal decomposition temperature is higher than the cellulose membrane heat. With the increase of iron ion concentration, the thermal stability of the composite filmsincreased gradually.（3） Composite membrane has good superparamagnetic at room temperature. With the increase of iron ionconcentration, saturation magnetization of composite filmrate was significantly increased. The saturation magnetization of the samples increased with the increasing of Fe2+ concentration. But when the concentration of Fe2+ increased to 0.31mol/L, the hysteresis loop of the composite film is no longer coincidewith certain coercivity and remanence, composite film lostsuper paramagnetic.（4） With the increase of the concentration of NaOH, Fe₃O₄ loading on the cellulose film and particle size are gradually increasing, the saturation magnetizationincreases. The concentration of NaOH in the solutionincreases with the increase of 3.0mol/L will have great influence on the crystallization properties of the composite thin films, thermal stability becomes worse, but its thermal stability is higher than the cellulose membrane.（5） Increased with the concentration of ferric ion, the mechanical properties of Fe₃O₄/cellulose compositepackaging film increases gradually and the water resistance increased gradually, but the resistivitydecreases. The results show that Fe₃O₄ cellulose composite packaging film surface resistivity within the anti-static material range, and the humidity sensitivity ofsmaller. Compared to the cellulose membrane, the surface resistivity of the composite film is more stable, withlittle change of humidity, play its excellent antistatic properties can be more in low humidity environment.