DM (deltamethrin) MIPs (molecularly imprinted polymers) as well as preparation method and application thereof
A technology of deltamethrin and molecular imprinting, which is applied in the field of deltamethrin molecularly imprinted polymer and its preparation, can solve the problems of poor applicability, complicated post-processing of the imprinted polymer, etc., and achieves strong accuracy, high selectivity, high The effect of broad application prospects
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Embodiment 1
[0029] The preparation of embodiment 1 deltamethrin MIPs
[0030] S1. Preparation of polystyrene bulbs: Weigh 1g of polyvinylpyrrolidone and 0.2g of azobisisobutyronitrile, dissolve in 50mL of ethanol and 50mL of styrene, stir at room temperature for 30min, then transfer to a four-neck flask, 70°C Polymerize in a constant temperature water bath for 24 hours, wash repeatedly with distilled water, centrifuge (10min, 8000r / min), take the precipitate, vacuum dry (60°C) to constant weight, and obtain the polystyrene bulbs for later use;
[0031] S2. The first step of swelling: Weigh 1g of polystyrene seed balls prepared in the previous step and 0.2g of sodium dodecyl sulfate (SDS) into 10mL of water, ultrasonically dissolve (600W, 15min), and add to a four-neck flask , stirred at room temperature (150r / min), is solution A; 0.1g AIBN and 1mL dibutyl phthalate (DBP) are added to 75mL water, ultrasonic (300W), until the droplet size is less than 0.5μm, is solution B , added to the ab...
Embodiment 2
[0035] Embodiment 2 investigates the influence of different porogens on the polymer adsorption effect
[0036] According to the preparation method of Example 1, the difference is that the porogen chloroform is replaced by different solvents, and the reaction is carried out, and the corresponding reaction results are recorded, as well as the adsorption capacity of the prepared product. The results obtained are shown in Table 1 shown.
[0037] Table 1 Adsorption effect of polymers prepared by different porogens
[0038] serial number Types of porogens Polymer adsorption 1 Acetonitrile Response failed 2 acetone 39.20mg / g 3 n-Hexane 47.46mg / g 4 Chloroform 52.18mg / g
[0039] The above experimental data show that when the porogen is selected as acetonitrile, deltamethrin MIPs cannot be obtained, and when the porogen is selected as acetone, n-hexane or chloroform, deltamethrin MIPs can be prepared, but using different When the porog...
Embodiment 3
[0040] Example 3 investigates the effect of the ratio of template molecules to functional monomers on the polymer adsorption effect
[0041] According to the preparation method of Example 1, the difference is that the dosage ratio of deltamethrin and acrylamide is replaced, and the corresponding reaction results are recorded, as well as the adsorption amount of the prepared product. The obtained results are shown in Table 2 .
[0042] The adsorption effect of the polymer prepared by the dosage ratio of different deltamethrin and acrylamide in table 2
[0043]
[0044] The above experimental data shows that when the ratio of the amount of deltamethrin and acrylamide is 1:2~8, deltamethrin MIPs can be prepared, but when the ratio of the two is different, the prepared deltamethrin The adsorption amount of permethrin MIPs is different, and when the ratio of deltamethrin and acrylamide is 1:6, the adsorption effect of the polymer is the best, which is 75.72mg / g.
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