Molecularly imprinted polymer for m-p-cresol separation and preparation method thereof

A molecularly imprinted, p-cresol technology, applied in the field of molecularly imprinted polymers and their preparation

Active Publication Date: 2014-08-06
ANQING FULLTIME CHEM INDAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the shortcomings of the traditional alkylation method for separating m-p-cresol and the advantages of molecular impri

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] In a 1L three-necked flask reactor, add 0.02 moles of template molecule p-cresol, 12 moles of acetonitrile solvent, add 0.4 moles of 4-vinylpyridine, 0.2 moles of acrylamide, 0.2 moles of α-methyl methacrylate functional monomer, and add 0.08 moles of ethylene glycol diacrylate crosslinking agent, fully stirred for 30 minutes, added 0.02 moles of azobisisobutyronitrile initiator; replaced the air in the reactor with nitrogen, first vacuumed the reactor until the pressure reached 100Pa, filled Inject nitrogen to normal pressure; then evacuate to 100Pa, then fill with nitrogen to normal pressure; then evacuate to 100Pa, fill with nitrogen to normal pressure; heat to 80°C, stir and polymerize for 12 hours, and filter to obtain polymer Microspheres, the obtained microspheres are washed with 10% sodium hydroxide ethanol solution until no p-cresol is detected in the eluent, then washed with ethanol until neutral, and dried at 80°C to obtain molecular imprinting for the separat...

Embodiment 2

[0018] Add 0.06 moles of template molecule p-cresol, 12 moles of acetonitrile solvent, 0.12 moles of 4-vinylpyridine, 0.06 moles of acrylamide, 0.06 moles of α-methyl methacrylate functional monomer, and 0.24 moles of acetonitrile in a 1L three-necked flask. Glycol dimethacrylate crosslinking agent, fully stirred for 20 minutes, added 0.012 moles of azobisisobutyronitrile initiator; replaced the air in the reactor with nitrogen, first vacuumed the reactor until the pressure reached 3000Pa, filled Inject nitrogen to normal pressure; then evacuate to 3000Pa, then fill in nitrogen to normal pressure; then evacuate to 3000Pa, fill in nitrogen to normal pressure; heat to 50°C, stir and polymerize for 24 hours, and filter to obtain polymer Microspheres, the obtained microspheres are washed with 10% sodium hydroxide ethanol solution until no p-cresol is detected in the eluent, then washed with ethanol until neutral, and dried at 25°C to obtain molecular imprinting for the separation o...

Embodiment 3

[0020] In a 1L three-necked flask reactor, add 0.04 moles of template molecule p-cresol, 16 moles of acetonitrile solvent, add 0.2 moles of 4-vinylpyridine, 0.1 moles of α-methyl methacrylate functional monomer, and add 0.3 moles of ethylene glycol di Methacrylate crosslinking agent, fully stirred for 30 minutes, added 0.02 moles of azobisisobutyronitrile initiator; replaced the air in the reactor with nitrogen, first vacuumed the reactor until the pressure reached 100Pa, and filled nitrogen to Atmospheric pressure; then evacuated to 100Pa, filled with nitrogen to normal pressure; then evacuated to 100Pa, filled with nitrogen to normal pressure; heated to 60 ° C, stirred and polymerized for 20 hours, filtered to obtain polymer microspheres, The obtained microspheres were washed with 10% sodium hydroxide ethanol solution until no p-cresol was detected in the eluent, then washed with ethanol until neutral, and dried at 60° C. to obtain a molecularly imprinted polymer for separati...

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Abstract

The invention discloses a molecularly imprinted polymer for m-p-cresol separation and a preparation method of the polymer. The molecularly imprinted polymer for m-p-cresol separation is synthesized by taking 4-vinyl pyridine, acrylamide and alpha-methyl methacrylate as functional monomers, glycol dimethacrylate as a cross-linking agent, azo diisobutyronitrile as an initiator and acetonitrile as a solvent.

Description

technical field [0001] The invention relates to a molecularly imprinted polymer used for the separation of m-p-cresol and a preparation method thereof, belonging to the fields of polymer polymerization and chemical separation. technical background [0002] Cresol is an important intermediate in organic synthesis, including three isomers, namely o-cresol, p-cresol, and m-cresol. Its monomer is a widely used organic chemical intermediate. P-cresol can be used in industrial sectors such as pesticides, dyes, and plastics, and can also be used as intestinal repellents, disinfectants, and local anti-corrosion agents in medicine. m-cresol can be used in analytical reagents and organic synthesis, and is an important raw material for the synthesis of antioxidants, pesticides, vitamin E, cosmetics and medicines; at the same time, it also has important applications in synthetic resins, color film developers, adhesives, etc. [0003] Mixed cresol, a by-product of the coal chemical ind...

Claims

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Application Information

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IPC IPC(8): C08F222/14C08F226/06C08F220/56C08F220/14C08J9/28
Inventor 周沛方岩雄李小潞王东方萍谭伟张维刚
Owner ANQING FULLTIME CHEM INDAL
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