用杨梅单宁改性皮胶原纤维膜,制备出了新型膜分离材料,并研究了这种膜材料用于油水分离的效果。扫描电镜分析表明,这种膜材料呈纤维网状结构,其通道呈'之'字型,并存在大量微细短纤维束,这使乳液易于破乳而聚集。以邻苯二甲酸二丁酯为油组份,系统研究了单宁改性胶原纤维膜的油水(O/W)分离特性。结果表明:使用单层膜和多层膜对油的截留率几乎没有影响,其截留率为80%左右,但使用多层膜时膜的水通量将明显下降。油浓度升高,截留率升高,膜的水通量下降。升高pH,截留率升高,但膜的水通量下降。如果在膜的表面施加搅拌,则膜对油的截留率下降,但水通量提高。膜重复使用三次,其截留率及水通量基本不变。上述研究结果表明,单宁改性皮胶原纤维膜具有良好的油水分离性质。
A novel membrane was prepared by bayberry tannin modified collagen fiber, and the separation effect of the prepared membrane for separating the oil from oil-water emulsion was studied by using the dibutyl o-phthalate as oil model. The photo of SEEM (scanning electron microscope) shows that the prepared membrane is in the form of fiber-network with zigzag pathway, and this kind of micro-fibrous structure distributes on the surface of the membrane, which benefits the breakage of emulsion. The experiments show...