A kind of preparation method of gossypol molecularly imprinted polymer
A technology of molecular imprinting and polymers, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of solvent separation and recovery, large solvent consumption, weak force, etc., and achieve low production cost and good stability , prepare simple effects
Inactive Publication Date: 2017-07-28
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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Problems solved by technology
However, the problems of the mixed solvent method are that the solvent separation and recovery are difficult, the solvent consumption is large, and the cost is high.
[0014] Zhao Chen et al. reported a method for the preparation of gossypol molecularly imprinted polymers (Sensors and ActuatorsB:Chemical,2013,181:104-113.), but the functional monomer used in the comparative literature is methacrylic acid, a traditional functional monomer. Monomer, the force between the functional monomer and the template molecule is non-covalent hydrogen bond force, the force is not strong, and the specificity and selectivity of the obtained material need to be further improved; the gossypol molecule prepared by Zhao Chen et al. Imprinted polymers are used for the rapid detection of gossypol
Method used
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Embodiment 1
[0034] a, take gossypol as the template molecule, template molecule by mass ratio: functional monomer 2-aminoethyl methacrylate: crosslinking agent ethylene glycol dimethacrylate: initiator azobisisobutyronitrile: Pore agent dichloromethane or acetonitrile=0.4-0.9:1.3:8-18:0.2-0.4:50 were added to the reactor in turn, ultrasonicated for 5 minutes to fully dissolve, nitrogen gas was passed for 5 minutes to remove oxygen, the reactor was sealed, and the temperature was 60 React in a constant temperature water bath at -65°C for 8-10 hours. After the reaction, a highly cross-linked hard rod-shaped solid is obtained, which is a polymer containing template molecules;
[0035] b. Grinding the solid obtained in step a into a fine powder with a mortar, and sieving through 150-200 mesh to obtain a powder with uniform particle size;
[0036] c, the powder in step b is carried out Soxhlet extraction with the solvent of the methanol of volume ratio 9:1: the mixture of acetic acid, remove...
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Abstract
The invention discloses a preparation method of a gossypol molecularly imprinted polymer. In the method, gossypol is used as a template molecule; the template molecule, a functional monomer, a crosslinking agent, an initiator and a pore forming agent are added first; under the effect of the initiator and by adopting the mechanism of free-radical-initiated polymerization and a thermal initiation polymerization way, a highly cross-linked block porous polymer is obtained; in the polymerization process, the functional group on the functional monomer interacts with the functional group of the template molecule, and is fixed in spatial arrangement and spatial conformation; and after that, the template molecule is eluted and removed by a Soxhlet extraction way to obtain the gossypol molecularly imprinted polymer. The imprinted polymer contains a three-dimensional hole which is completely matched with the template molecule in spatial structure and can be specifically combined with the template molecule; and the imprinted polymer has high selectivity on the template molecule as well as relatively large adsorption capacity. The method is simple in preparation and can be applied to the gossypol removal and recycling treatment.
Description
technical field [0001] The invention relates to a preparation method of a gossypol molecularly imprinted polymer, which belongs to the technical field of organic polymer chemical functional materials. Background technique [0002] Gossypol, also known as gossypol, is a polyphenolic hydroxyl binaphthaldehyde compound, mainly present in the cottonseed color glands of cotton. Cotton is an important textile crop, oil crop and vegetable protein resource. China is the world's largest cotton-producing country, with abundant cottonseed resources. The crude protein content of cottonseed cake after cottonseed oil extraction is as high as 40%, which is close to soybean meal. As a potential protein resource, cottonseed meal has very broad market prospects and strong competitive advantages. However, cottonseed meal contains a large amount of gossypol which is toxic to humans and animals, which seriously limits the utilization value and economic benefits of cottonseed meal as animal pro...
Claims
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IPC IPC(8): C08F222/14C08F220/34C08J9/26B01J20/26B01J20/30
CPCB01J20/268C08F222/1006C08F222/102C08J9/26C08J2201/0422C08J2335/02C08F220/34
Inventor 张亚刚郅轲轲王璐璐张学敏张乐涛周鑫王朋磊姜莹芳张岚
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI