Cellulose-based Ultraviolet B(UVB)-shielding films were prepared by coating SnO2 film onto regenerated cellulose(RGC) film through a magnetron sputtering method. The dependence of the crystalline quality and optical p...Cellulose-based Ultraviolet B(UVB)-shielding films were prepared by coating SnO2 film onto regenerated cellulose(RGC) film through a magnetron sputtering method. The dependence of the crystalline quality and optical property of the SnO2 film on the sputtering power was systematically studied. High quality SnO2 film was grown on RGC film at an optimum sputtering power of 150 W. The optical properties of the composite film can be tailored by adjusting the thickness of the SnO2 film. The SnO2/RGC composite film exhibited high visible transparency and excellent UVBshielding capacity, which can be used for protection against short-wave radiation.展开更多
A convenient tape-casting method was applied to prepare high performance aromatic polyamide(PA)films based on Technora®.During the polycondensation,CaO was introduced to improve the solubility of the PA resin,and...A convenient tape-casting method was applied to prepare high performance aromatic polyamide(PA)films based on Technora®.During the polycondensation,CaO was introduced to improve the solubility of the PA resin,and the generated halides were totally removed from the film via a simple water bath,without leaving any defects in PA films.The factors of processing temperature and immersion time had been systematically investigated,and the experimental results demonstrated that both of them had impressive impacts on aggregation state and comprehensive properties of the PA film.It was suggested that immersion in water for more than 1 min and baking below 300℃ for 10 min were the optimal conditions for the thermal,tensile,tear,and optical properties to be in the best equilibrium.The resultant PA films integrated outstanding film-forming ability and excellent general performance,especially the tensile property and tear resistance.展开更多
文摘Cellulose-based Ultraviolet B(UVB)-shielding films were prepared by coating SnO2 film onto regenerated cellulose(RGC) film through a magnetron sputtering method. The dependence of the crystalline quality and optical property of the SnO2 film on the sputtering power was systematically studied. High quality SnO2 film was grown on RGC film at an optimum sputtering power of 150 W. The optical properties of the composite film can be tailored by adjusting the thickness of the SnO2 film. The SnO2/RGC composite film exhibited high visible transparency and excellent UVBshielding capacity, which can be used for protection against short-wave radiation.
基金supported by the National Natural Science Foundation of China(No.51973225).
文摘A convenient tape-casting method was applied to prepare high performance aromatic polyamide(PA)films based on Technora®.During the polycondensation,CaO was introduced to improve the solubility of the PA resin,and the generated halides were totally removed from the film via a simple water bath,without leaving any defects in PA films.The factors of processing temperature and immersion time had been systematically investigated,and the experimental results demonstrated that both of them had impressive impacts on aggregation state and comprehensive properties of the PA film.It was suggested that immersion in water for more than 1 min and baking below 300℃ for 10 min were the optimal conditions for the thermal,tensile,tear,and optical properties to be in the best equilibrium.The resultant PA films integrated outstanding film-forming ability and excellent general performance,especially the tensile property and tear resistance.