2,4,6-trichlorophenol molecular imprinting microsphere polymer
A technology for imprinting polymers and trichlorophenol molecules, which is applied in two fields, can solve the problems of non-uniform binding sites, affecting the separation effect, and excessively wide chromatographic peaks, so as to avoid non-selective adsorption, expand the application field, The effect of high adsorption selectivity
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Embodiment 1
[0051] With 2,4,6-trichlorophenol as template molecule, toluene-acetonitrile mixed solvent (1:3, v / v) as solvent, methacrylic acid as functional monomer, divinylbenzene as cross-linking agent, azo Diisobutyronitrile is an initiator, template molecule: functional monomer: crosslinking agent: initiator=1:4:20:0.66 (molar ratio), thermal initiation polymerization forms molecularly imprinted microsphere polymer, and this polymer has It has obvious specific adsorption, and its maximum adsorption capacity for 2,4,6-trichlorophenol as a template molecule is 350.35 mg / g.
Embodiment 2
[0053] With 2,4,6-trichlorophenol as the template molecule, the mixed solvent of toluene acetonitrile (1:3, v / v) as the solvent, 4-vinylpyridine as the functional monomer (4-VP), divinylbenzene As a cross-linking agent, azobisisobutyronitrile is an initiator, template molecule: functional monomer: cross-linking agent: initiator = 1:4:20:0.66 (molar ratio), thermally induced polymerization to form molecularly imprinted microspheres Polymer, the particle size of this polymer ranges from 2.5 to 5.0 μm, and the maximum adsorption capacity is 272.83 mg / g.
[0054] II. Selection of crosslinking agent
Embodiment 3
[0056] With 2,4,6-trichlorophenol as template molecule, toluene / acetonitrile mixed solvent (1:3, v / v) as solvent, methacrylic acid as functional monomer, divinylbenzene as crosslinking agent, coupling Azodiisobutyronitrile is an initiator, template molecule: functional monomer: crosslinking agent: initiator=1:4:20:0.66 (molar ratio), thermally induced polymerization to form a molecularly imprinted microsphere polymer, this polymer It has obvious specific adsorption, and its maximum adsorption capacity for 2,4,6-trichlorophenol as a template molecule is 350.35 mg / g.
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