Hydrophilic polyethylene hollow fiber membrane and preparation method thereof

Abstract

The invention discloses a hydrophilic polyethylene hollow fiber membrane and a preparation method thereof. The hollow fiber membrane is prepared by the following method of: (1) previously preparing a hydrophobic primary polyethylene hollow fiber membrane; (2) preparing cellulose diacetate solution, wherein the concentration of the cellulose diacetate solution is 20 to 50 percent; and (3) soaking the primary polyethylene hollow fiber membrane into the cellulose diacetate solution prepared in the step (2), making the cellulose diacetate solution fully soak into pores of membrane yarns, and thenremoving the solvent of the cellulose diacetate solution to obtain the hydrophilic polyethylene hollow fiber membrane. The method is simple, feasible and easy to apply in the industry, can be continued, and can also reduce the cost; and the obtained hydrophilic polyethylene hollow fiber membrane can keep hydrophilic property for long time.

Description

technical field

[0001] The invention belongs to the technical field of membrane separation, and in particular relates to a hydrophilic polyethylene hollow fiber membrane and a preparation method thereof. Background technique

[0002] Membrane separation technology is a new type of high-efficiency separation technology. Compared with traditional separation technology, it has the advantages of high separation efficiency, low energy consumption and environmental friendliness. It is widely used in petrochemical, food, medicine, natural substance extraction and concentration and Wastewater treatment and other fields. Because membrane separation technology is also closely related to energy saving, environmental protection, and resource development, the role of membrane technology has attracted more and more attention from countries in today's world of energy and water shortages, and increasingly serious water and environmental pollution.

[0003] In the field of membrane technolo...