Combined filter membrane for efficient filtration of leukocyte, manufacturing method thereof and leukocyte filter
A leukocyte and filter technology, applied in the field of leukocyte filter, can solve the problems of the decrease of the positive charge of the copolymer, the inability to remove leukocytes by 3log, and the decrease of the filtration rate of the leukocyte filter.
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Embodiment 1
[0029] 1. Preparation of combined filter membrane
[0030] Spray the alkali-free ultra-fine glass fiber slurry with a diameter of 0.5-5 μm evenly on the flat polyester fiber non-woven fabric. The spraying amount per square meter of non-woven fabric is 25-30 grams per square meter. The excess glass fiber slurry is covered with a layer of polyester fiber non-woven fabric. The weight of the upper and lower layers of non-woven fabric is 25-30 grams per square meter, and it is rolled and dried with hot rollers to obtain a semi-finished product. The polyester fiber non-woven fabric can be pre-coated with polyethylene or polypropylene hot-melt adhesive before spraying the glass fiber to make the combined filter membrane stick tightly.
[0031] 2. Synthesis of Acrylic Copolymer
[0032] Ethanol is used as a solvent, and butyl acrylate, methyl methacrylate, hydroxyethyl methacrylate, acrylic acid, hydroxyethyl acrylate, and aminoethyl methacrylate are used as comonomers. The initiato...
Embodiment 2
[0040] This example is basically the same as Example 1, except that the concentration of the acrylic copolymer solution is 1 mg / ml.
Embodiment 3
[0042] This embodiment is basically the same as Embodiment 1, except that the concentration of the acrylic copolymer solution is 9 mg / ml.
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