Preparation and application of chiral resolution additive used for conveniently modifying magnetic nanoparticles
A technology of magnetic nano ions and additives, applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problems of limited coating ability, difficult control of uniformity, and difference in movement speed, etc., to achieve The synthesis conditions are not harsh, the adsorption process is fast and simple, and the adsorption stability is high.
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Embodiment 1
[0042] A preparation of a chiral separation polymer additive for modifying magnetic nano ions, comprising the following steps:
[0043] (1) In terms of parts by mass, dissolve 5.3 parts of itaconic acid into 100 parts of N,N-dimethylformamide, and then add 1% of azo Diisobutyronitrile, at 60°C, in an atmosphere of inert gas bubbling, heat under reflux for 10h, spin evaporate the solution after the reaction to 1 / 4 of the original volume, and then directly add the concentrated solution dropwise to 80 parts of petroleum ether , stand still for 30 minutes, pour off the liquid part, and leave the remaining solid for 60 minutes in a ventilated state, and vacuum-dry at 60° C. to obtain the main chain of the polymer additive.
[0044] (2) In terms of molar parts, take the polymer additive main chain containing 1000 parts of itaconic acid units, dissolve it in 5000 parts of N,N-dimethylformamide, add 300 parts of EDC·HCl and 300 parts of NHS of NHS, bubbled with inert gas to deoxygena...
Embodiment 2
[0047] A preparation of a chiral separation polymer additive for modifying magnetic nano ions, comprising the following steps:
[0048] (1) In terms of parts by mass, dissolve 7 parts of itaconic acid into 100 parts of N,N-dimethylacetamide, and then add 1% of azo Diisobutyronitrile, at 60°C, in an atmosphere of inert gas bubbling, heating under reflux for 9 hours, rotary steaming and concentrating the reacted solution to 1 / 4 of the original volume, and then directly adding the concentrated solution dropwise to 80 parts of petroleum ether , stand still for 30 minutes, pour off the liquid part, and leave the remaining solid for 60 minutes in a ventilated state, and vacuum-dry at 60° C. to obtain the main chain of the polymer additive.
[0049] (2) In terms of molar parts, take the polymer additive main chain containing 1000 parts of itaconic acid units, dissolve it in 6000 parts of N,N-dimethylformamide, add 300 parts of EDC·HCl and 250 parts of NHS of NHS, pass through an ine...
Embodiment 3
[0052] A preparation of a chiral separation polymer additive for modifying magnetic nano ions, comprising the following steps:
[0053] (1) In parts by mass, dissolve 9 parts of itaconic acid into 100 parts of chloroform, then add 1% azobisisobutyronitrile relative to protonable or deprotonable unit equivalents, in At 60°C, in an inert gas bubbling atmosphere, heat under reflux for 8 hours, spin evaporate and concentrate the reacted solution to 1 / 4 of the original volume, then directly add the concentrated solution dropwise to 80 parts of petroleum ether, let stand for 40 minutes, pour The liquid part was removed, and the remaining solid was left to stand for 70 minutes in a ventilated state, and vacuum-dried at 60° C. to obtain the main chain of the polymer additive.
[0054] (2) In terms of molar parts, take the polymer additive main chain containing 1,000 parts of itaconic acid units, dissolve it in 8,000 parts of N,N-dimethylformamide, add 400 parts of EDC·HCl and 200 part...
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