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Method for preparing bisphenol A molecularly imprinted polymer

A molecular imprinting and polymer technology, applied in the field of nanomaterials, can solve the problems of difficult grinding and sieving, large particles, etc., and achieve the effect of uniform particles, large surface area and controllable size

Inactive Publication Date: 2012-10-03
苏州市汉微环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polymer obtained by this method is blocky, with large particles, and it is not easy to grind and sieve; and there are few reports on the recognition specificity and sensitivity of bisphenol A molecularly imprinted polymers in specific environments.

Method used

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  • Method for preparing bisphenol A molecularly imprinted polymer
  • Method for preparing bisphenol A molecularly imprinted polymer
  • Method for preparing bisphenol A molecularly imprinted polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add 1mmol (228mg) bisphenol A, 4mmol (0.42mL) 2-vinylpyridine and 50mL toluene into a 150mL Erlenmeyer flask, shake at room temperature for 4h, so that bisphenol A and 2-vinylpyridine can fully act; then add 20mmol poly Glycerol trimethacrylate and 50 mg of azobisisobutyronitrile were thoroughly mixed, then ultrasonically treated for 20 minutes, nitrogen gas was passed for 10 minutes to remove dissolved oxygen, and then moved into a 60°C constant temperature water bath for thermal polymerization in a sealed state. After 24 hours, it was taken out and cooled to room temperature to obtain a colloidal polymer. After passing through a 200-mesh molecular sieve, it was extracted with 1:9 (v / v) acetic acid-methanol 200mL Soxhlet for 48h, then washed with methanol 200mL for 24h, and vacuum-dried to obtain a polymer are molecularly imprinted polymers.

Embodiment 2

[0031] Add 1 mmol (228 mg) of bisphenol A, 4 mmol (0.42 mL) of α-methacrylic acid (MAA) and 50 mL of toluene into a 150 mL Erlenmeyer flask, shake at room temperature for 4 hours, so that bisphenol A and 2-vinylpyridine can fully act; Then add 20mmol of polyglycerol trimethacrylate and 50mg of azobisisobutyronitrile, mix well and then ultrasonically treat for 20min, blow nitrogen gas for 10min to remove dissolved oxygen, and move it into a 60°C constant temperature water bath for thermal polymerization in a sealed state. After 24 hours, it was taken out and cooled to room temperature to obtain a colloidal polymer. After passing through a 200-mesh molecular sieve, it was extracted with 1:9 (v / v) acetic acid-methanol 200mL Soxhlet for 48h, then washed with methanol 200mL for 24h, and vacuum-dried to obtain a polymer are molecularly imprinted polymers.

Embodiment 3

[0033] Add 1mmol (228mg) of bisphenol A, 4mmol (0.42mL) of 2-vinylpyridine and 50mL of chloroform into a 150mL Erlenmeyer flask, and shake at room temperature for 4 hours to fully effect bisphenol A and 2-vinylpyridine; then add 20mmol of polyvinylpyridine Glycerol trimethacrylate and 50 mg of azobisisobutyronitrile were thoroughly mixed, then ultrasonically treated for 20 minutes, nitrogen gas was passed for 10 minutes to remove dissolved oxygen, and then moved into a 60°C constant temperature water bath for thermal polymerization in a sealed state. After 24 hours, it was taken out and cooled to room temperature to obtain a colloidal polymer. After passing through a 200-mesh molecular sieve, it was extracted with 1:9 (v / v) acetic acid-methanol 200mL Soxhlet for 48h, then washed with methanol 200mL for 24h, and vacuum-dried to obtain a polymer are molecularly imprinted polymers.

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Abstract

The invention discloses a method for preparing a bisphenol A molecularly imprinted polymer. The method comprises the following steps of: adding bisphenol A, a functional monomer and porogen into a conical flask to ensure that the bisphenol A and the functional monomer are fully reacted, wherein the functional monomer is 2- vinylpyridine, and alpha-methacrylic acid, the porogen is chloroform and methylbenzene, the polarity of the chloroform and methylbenzene is low, and hydrogen bonds are not easily formed; adding initiator and a cross-linking agent, fully mixing and performing ultrasonic processing, introducing nitrogen to remove dissolved oxygen, and transferring into a thermostat water bath in a sealing state and performing thermal polymerization; and after reaction, taking out the obtained product, cooling to room temperature to obtain colloidal polymer, screening the colloidal polymer by using a 200-mesh molecular sieve, performing Soxhlet extraction by using acetic acid-methanol, washing the extract by using methanol, and drying under vacuum to obtain the bisphenol A molecularly imprinted polymer. The prepared bisphenol A molecularly imprinted polymer has the characteristics of specific adsorption to specific organic pollutant bisphenol A in industrial wastewater, high selectivity on a sample and high speed, accuracy and efficiency in enrichment and purification.

Description

technical field [0001] The invention belongs to the field of molecularly imprinted polymers, and in particular relates to a method for preparing microspheres to screen the best functional monomers and synthesize nanomaterials with high selectivity to bisphenol A. Background technique [0002] Bisphenol A (Bisphenol A, CAS 80-05-7, BPA) is an environmental endocrine disruptor, mainly used in the production of polycarbonate and epoxy resin, and is an important chemical raw material. The mass production and widespread use of bisphenol A have resulted in detection in water, sediment, soil and atmospheric environments. At present, the determination of bisphenol A mainly adopts chromatographic methods, enzymatic methods and immunological methods, etc. These analytical techniques have high accuracy and sensitivity, but they have very high requirements for sample pretreatment, and they need to be extracted from complex matrix samples. Low-concentration target compounds are extracte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F222/14C08F226/06C08F220/06C08F2/44C08J9/28C08J9/26B01J20/26B01J20/30C02F1/28C02F101/34
Inventor 韦斯杨本晓黎丽郑亚楠
Owner 苏州市汉微环保科技有限公司
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