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Preparation method of vinyl chloride polymer ionic liquid porous membrane

A vinyl chloride polymer and ionic liquid technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problem of ionic liquid recovery that has not been solved, and achieve good self-cleaning and anti-pollution performance, Good mechanical properties, easy to promote the effect

Inactive Publication Date: 2015-05-13
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the structural characteristics of ionic liquids can endow other materials with some unique properties, but the recovery problem of ionic liquids in the process of separation and use has not been solved.

Method used

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  • Preparation method of vinyl chloride polymer ionic liquid porous membrane
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Examples

Experimental program
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Embodiment 1

[0024] Preparation process of polyvinyl chloride polymer ionic liquid porous membrane:

[0025] (1) Preparation of vinyl chloride polymer ionic liquid: Disperse polyvinyl chloride powder in a mixed solvent of ethanol and water, the volume ratio of ethanol and water is 5:1, then add N-methylimidazole, polyvinyl chloride powder The mass ratio to N-methylimidazole is 1:4, under argon protection, then add NaOH equivalent to N-methylimidazole, react at 70°C for 24h, cool the solution, centrifuge, and wash repeatedly with ethanol and deionized water, Dry in a vacuum oven at 25°C to prepare vinyl chloride polymer ionic liquid (PVC-mimOH);

[0026] (2) Preparation of vinyl chloride polymer ionic liquid porous membrane: Dissolving vinyl chloride polymer ionic liquid powder (PVC-mimOH) and polyvinylpyrrolidone in dimethyl sulfoxide to prepare vinyl chloride polymer ionic liquid (PVC-mimOH) -mimOH) with a proportion of 15wt% of the casting film solution, stirred at 70°C until uniform; t...

Embodiment 2

[0029] Preparation process of polyvinyl chloride polymer ionic liquid porous membrane:

[0030] (1) Preparation of vinyl chloride polymer ionic liquid: Disperse polyvinyl chloride powder in a mixed solvent of ethanol and water, the volume ratio of ethanol and water is 3:1, then add N-methylimidazole, polyvinyl chloride powder The mass ratio to N-methylimidazole is 1:4, under argon protection, then add NaOH equivalent to N-methylimidazole, react at 70°C for 24h, cool the solution, centrifuge, and wash repeatedly with ethanol and deionized water, Dry in a vacuum oven at 25°C to prepare vinyl chloride polymer ionic liquid (PVC-mimOH);

[0031] (2) Preparation of vinyl chloride polymer ionic liquid porous membrane: Dissolving vinyl chloride polymer ionic liquid powder (PVC-mimOH) and polyvinylpyrrolidone in dimethyl sulfoxide to prepare vinyl chloride polymer ionic liquid (PVC-mimOH) -mimOH) with a proportion of 15wt% of the casting film solution, stirred at 70°C until uniform; t...

Embodiment 3

[0034] Preparation process of polyvinyl chloride polymer ionic liquid porous membrane:

[0035] (1) Preparation of vinyl chloride polymer ionic liquid: Disperse polyvinyl chloride powder in a mixed solvent of ethanol and water, the volume ratio of ethanol and water is 1:1, then add N-methylimidazole, polyvinyl chloride powder The mass ratio to N-methylimidazole is 1:4, under argon protection, then add NaOH equivalent to N-methylimidazole, react at 70°C for 24h, cool the solution, centrifuge, and wash repeatedly with ethanol and deionized water, Dry in a vacuum oven at 25°C to prepare vinyl chloride polymer ionic liquid (PVC-mimOH);

[0036] (2) Preparation of vinyl chloride polymer ionic liquid porous membrane: Dissolving vinyl chloride polymer ionic liquid powder (PVC-mimOH) and polyvinylpyrrolidone in dimethyl sulfoxide to prepare vinyl chloride polymer ionic liquid (PVC-mimOH) -mimOH) with a proportion of 15wt% of the casting film solution, stirred at 70°C until uniform; t...

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Abstract

The invention discloses a preparation method of a vinyl chloride polymer ionic liquid porous membrane. The preparation method comprises the following steps: preparing vinyl chloride polymer ionic liquid (PVC-mimX), and then preparing the vinyl chloride polymer ionic liquid porous membrane by adopting an immersion precipitation phase inversion process. According to the preparation method of the vinyl chloride polymer ionic liquid porous membrane, the process is simple, raw materials are easily available, the reaction time is short, the reaction condition is mild, no expense instrument is required, the industrial implementation can be realized easily, the prepared vinyl chloride polymer ionic liquid porous membrane has the good antifouling property, good physical properties of a polyvinyl chloride membrane are kept, and the vinyl chloride polymer ionic liquid porous membrane has good stability and has the high-efficiency separation characteristic.

Description

Technical field [0001] The present invention is a high molecular material field, which is specifically involved in the preparation method of a polyiteric membrane of ionic liquid liquid liquid liquid. Background technique [0002] Polyvinyl chloride (PVC) is a commonly used synthetic polymer film material, which has good mechanical properties, thermal stability, solvent resistance, and microorganism resistance.However, due to its low surface energy and hydrophobic properties, its anti -pollution and biocompatibility are poor, and the polymer multi -pores prepared by it can easily cause non -specific protein adsorption when practical application. [0003] The ionic liquid itself, as a green and environmentally friendly catalyst and response solvent, has been valued by scholars at home and abroad.Moreover, the structural characteristics of the ionic liquid itself can give some unique properties of other materials but the recycling problem of ionic liquid in the process of separatio...

Claims

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Application Information

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IPC IPC(8): B01D71/30B01D67/00
Inventor 李建华闫邦锋王双双张德彬张其清
Owner FUZHOU UNIV
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