AM/NaAA/allylcyclodextrin polymer with inclusion function and synthetic method thereof

A technology of allyl cyclodextrin and synthesis method, which is applied in drilling compositions, chemical instruments and methods, water/sludge/sewage treatment, etc. Limitations and other problems, to achieve the effect of easy purification and separation, simple and feasible preparation method, and mild reaction conditions

Inactive Publication Date: 2008-01-16
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because acrylamide polymers containing surface active groups are charged and easily adsorbed by formation clay minerals, they are limited in enhancing oil recovery.

Method used

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  • AM/NaAA/allylcyclodextrin polymer with inclusion function and synthetic method thereof
  • AM/NaAA/allylcyclodextrin polymer with inclusion function and synthetic method thereof
  • AM/NaAA/allylcyclodextrin polymer with inclusion function and synthetic method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] Synthesis of Example 1 Allyl Cyclodextrin

[0019] Put 5.7g (5mmol) β-CD in a beaker, add 30mL DMSO and 50mL DMF to dissolve it, then add 2.0g NaOH, place it on a magnetic stirrer and stir it well for about 1h. The color of the solution gradually deepened and turned yellow, and the pH value was 9 at this time. At 0°C to 10°C, 8.0 mL of propene bromide was slowly added dropwise twice, and stirred with a magnetic stirrer, the pH value dropped to 7, the color of the solution became light yellow, and precipitation began to appear after 24 hours of reaction. After 48 hours the reaction was stopped and a white precipitate was obtained. DMSO was removed by vacuum filtration, and the precipitate was washed with acetone to obtain 6.10 g (yield: 72.6%) of white powder, which was sealed and stored in cold storage.

example 2

[0020] Example 2 has the binary polymer composition of inclusion function

[0021] Weigh the allyl cyclodextrin monomer and distilled water according to the ratio in Table 2, put them in a 100mL Erlenmeyer flask, put them in a constant temperature water bath at 40°C to dissolve them completely, then weigh acrylamide and add them into the solution, and wait for it to dissolve completely , through N 2 After about 20 minutes, add the pre-prepared ammonium persulfate solution (8 mg / mL) and continue to pass nitrogen gas for 10 minutes, then seal and react at a constant temperature of 45°C for 8 hours, precipitate with absolute ethanol, and dry under vacuum at 40°C to obtain the polymer.

[0022] Table 2 binary polymer preparation

[0023] medicine

example 3 2

[0024] Example 3 binary copolymers are hydrolyzed into ternary polymer synthesis

[0025] In a 250mL Erlenmeyer flask, add 0.5g of the binary copolymer synthesized in the above example and 100mL of distilled water. After the polymer is completely dissolved, add the hydrolysis agent NaOH according to Table 3, react at 50°C for 4h, and precipitate the polymer with acetone. , and then vacuum-dried at 40°C to obtain terpolymers with different degrees of hydrolysis, see Table 3 for details.

[0026] Table 3 Terpolymer hydrolysis degree

[0027] NaOH(g)

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PUM

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Abstract

The invention relates to an AM/NaAA/ allyl cyclodextrin polymerization with a inclusion function and a synthesis method of the AM/NaAA/ allyl cyclodextrin (CD) polymerization, which comprises three structure units of acrylamide, sodium acrylate and allyl cyclodextrin. The synthesis method is as follow: the allyl cyclodextrin is synthesized with DMSO and DMF as solvent, CD as raw material and under the temperature of 0 to 10 DEG C. Then AM is put into the allyl-beta-cyclodextrin water solution, then initiator is added to prepare AM/ allyl-beta-cyclodextrin binary copolymer under the conditions that monomer concentration is 10 to 20 percent, initiation system concentration is 40 to 80 mg/l, the temperature is 30 to 50 DEG C, and the time is for 1 to 8 hours. NaOH solution is put into the binary copolymer to hydrolyze, then the AM/NaAA/ allyl cyclodextrin polymerization is obtained. The synthesis method of the polymer is processed under the mild condition with simple operation, the product is easy to be purified and separated. The AM/NaAA/ allyl cyclodextrin polymerization can be used in the fields such as petroleum exploitation, waste water treatment, chemistry and medicine.

Description

technical field [0001] The invention relates to an AM / NaAA / allyl cyclodextrin polymer with inclusion function and a synthesis method thereof, which can be used in the fields of petroleum exploitation, sewage treatment, chemical industry, medicine and the like. Background technique [0002] Polyacrylamide water-soluble polymers have attracted more and more attention because of their good viscoelasticity during oil displacement (Ahmad Rabiee, M.Ebrahim Zeynali, and Habibollah Baharvandl.Synthesis of High MolecularWeightPartially Hydrolyzed Polyacrylamide and Investigation on itsProperties.Iranian Polymer Journal, 14(7), 2005, 603-608). Since this type of polymer can not improve the interfacial tension between oil-water-rock as an oil displacement agent, the introduction of surface active groups into polyacrylamide polymers has become a research hotspot for scientists at home and abroad. Acrylamide and Cationic Copolymerization Containing Unsaturated Bonds (Tao Youhe. Preparat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F8/12C08F4/30C08F4/04C09K8/00C02F1/00
Inventor 邹长军雷英
Owner SOUTHWEST PETROLEUM UNIV
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