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Preparation method for modified polyethylene glycol terephthalate non-woven fabric composite membrane

A technology of ethylene glycol phthalate and non-woven fabrics, which is applied in the field of preparation of separation materials and composite membrane materials, can solve the problems of low reduction rate of water contact angle and low reduction rate of bovine serum albumin equilibrium adsorption, and achieves Reduce water contact angle, improve pore connectivity, and controllable effects

Active Publication Date: 2014-01-08
ENERGY & ENVIRONMENT RES INST OF HEILONGJIANG PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims to solve the technical problems of low reduction rate of water contact angle and low reduction rate of equilibrium adsorption of bovine serum albumin (BSA) solution in the modified composite membrane prepared by existing membrane material modification or membrane surface modification method, Thereby a kind of preparation method of modified polyethylene terephthalate non-woven composite film is provided

Method used

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  • Preparation method for modified polyethylene glycol terephthalate non-woven fabric composite membrane
  • Preparation method for modified polyethylene glycol terephthalate non-woven fabric composite membrane

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specific Embodiment approach 1

[0017] Specific embodiment one: the preparation method of a kind of modified polyethylene terephthalate non-woven composite film of the present embodiment is carried out according to the following steps:

[0018] 1. Preparation of casting solution: use 2-acrylamide-2-methylpropanesulfonic acid as the hydrophilic monomer, add cross-linking agent N,N'-methylenebisacrylamide and photoinitiator α-ketopentyl Diacid to prepare casting solution; wherein, the mass ratio of 2-acrylamide-2-methylpropanesulfonic acid, N,N'-methylenebisacrylamide and α-ketoglutaric acid is 5-20:1 :1;

[0019] 2. Soak the non-woven fabric in a polyethylene glycol 600 solution with a mass percentage of 1.2% to 3.6% for 2 to 5 hours, take it out and soak it in the casting solution prepared in step 1 for 30 to 60 minutes, and then place it in Irradiate under a 1kW ultraviolet lamp to prepare a modified composite film;

[0020] 3. Place the modified composite membrane prepared in step 1 in a drying oven at 1...

specific Embodiment approach 2

[0026] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is: in step 1, 2-acrylamide-2-methylpropanesulfonic acid, N,N'-methylenebisacrylamide and α-ketoglutadiene The mass ratio of acid is 20:1:1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0027] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: in step 2, the irradiation time is 30-70 minutes, and the irradiation distance is 10-25 cm. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method for a modified polyethylene glycol terephthalate non-woven fabric composite membrane and relates to a preparation method for parting materials and composite membrane materials in order to solve the technical problem that a modified composite membrane prepared according to an existing membrane material modification or membrane surface modification method is low in reduction rate of a water contact angle and in reduction rate of equilibrium solution absorption capacity of bovine serum albumin (BSA). The preparation method includes the steps of: 1), preparation of a casting membrane solution; 2), preparation of the modified composite membrane; 3), preparation of the modified non-woven fabric composite membrane. By the preparation method, the water contact angle of the composite membrane is lowered, the equilibrium solution absorption capacity of the BSA of the composite membrane is decreased, and membrane flux of the composite membrane is increased.

Description

technical field [0001] The invention relates to a preparation method of a separation material and a composite membrane material. Background technique [0002] Membrane Bioreactor (MBR) is a new type of water treatment process that combines membrane separation technology and traditional biological treatment methods. It combines membrane separation and biodegradation. In the application of membrane separation technology, membrane materials play a vital role. At present, membrane fouling has become the main problem restricting the application and development of MBR. The hydrophobic interaction between the hydrophobic surface and the hydrophobic polymer is the main reason for the adsorption of pollutants. It is generally accepted that the improvement of the hydrophilicity of the surface of the membrane material can reduce the interaction between the membrane surface and the intercepted molecules, thereby reducing the adsorption of pollutants, especially biological pollutants. ...

Claims

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Application Information

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IPC IPC(8): B01D71/56B01D69/12B01D67/00
Inventor 张玥王志成张宇
Owner ENERGY & ENVIRONMENT RES INST OF HEILONGJIANG PROVINCE
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