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CO2 responsive polymer microsphere based on interpenetrating network structure and preparation method of CO2 responsive polymer microsphere

An interpenetrating network structure and polymer technology, applied in the field of CO2 responsive polymer microspheres and their preparation, can solve problems such as inhibiting response performance, and achieve the effects of high yield, mild reaction conditions and simple operation.

Active Publication Date: 2017-08-29
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second method has a simple preparation process, which is more in line with the actual requirements of the polymer synthesis process, and is conducive to large-scale production, but has the disadvantage of inhibiting its response performance due to the bonding of microspheres.

Method used

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  • CO2 responsive polymer microsphere based on interpenetrating network structure and preparation method of CO2 responsive polymer microsphere
  • CO2 responsive polymer microsphere based on interpenetrating network structure and preparation method of CO2 responsive polymer microsphere
  • CO2 responsive polymer microsphere based on interpenetrating network structure and preparation method of CO2 responsive polymer microsphere

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Dissolve 12.30 g of acrylamide and 0.61 g of cross-linking agent methylenebisacrylamide (the cross-linking degree is 4.9 wt%) in deionized water to obtain solution I, and dissolve 0.1 g of initiator AIBI in deionized water to obtain a solution Ⅱ. At room temperature, pass nitrogen gas into the two solutions to remove oxygen for 0.5h. Dissolve 0.5g of emulsifier Span-60 in cyclohexane to obtain emulsifier solution. 2 Under protection, deoxygenated solution I and solution II were added dropwise to the emulsifier solution simultaneously. After solution I and solution II were added dropwise, the N 2 Protect, stir and react at 60°C for 6 hours, isolate the microspheres obtained after the reaction, alternately wash the microspheres with ethanol and deionized water to remove impurities, and then vacuum dry to obtain the skeleton polymer microspheres (polyacrylamide microspheres);

[0036] (2) Mix 1.05g of the skeleton polymer microspheres obtained in step (1) with 2.8g of ...

Embodiment 2

[0038] (1) Dissolve 12.30 g of acrylamide and 0.025 g of cross-linking agent methylenebisacrylamide (the cross-linking degree is 0.2 wt%) in deionized water to obtain solution I, and dissolve 0.1 g of initiator AIBI in deionized water to obtain For solution II, pass nitrogen gas into the two solutions at room temperature to deoxygenate for 0.5h, dissolve 0.5g of emulsifier Span-60 in cyclohexane to obtain emulsifier solution, and store in N 2Under protection, deoxygenated solution I and solution II were added dropwise to the emulsifier solution simultaneously. After solution I and solution II were added dropwise, the N 2 Protect, stir and react at 60°C for 6 hours, isolate the microspheres obtained after the reaction, alternately wash the microspheres with ethanol and deionized water to remove impurities, and then vacuum dry to obtain the skeleton polymer microspheres (polyacrylamide microspheres);

[0039] (2) After mixing 1.05g of skeleton polymer microspheres obtained in st...

Embodiment 3

[0041] (1) Dissolve 12.30 g of acrylamide and 0.12 g of cross-linking agent methylenebisacrylamide (the cross-linking degree is 0.97 wt%) in deionized water to obtain solution I, and dissolve 0.1 g of initiator AIBI in deionized water to obtain For solution II, pass nitrogen gas into the two solutions at room temperature to deoxygenate for 0.5h, dissolve 0.5g of emulsifier Span-60 in cyclohexane to obtain emulsifier solution, and store in N 2 Under protection, deoxygenated solution I and solution II were added dropwise to the emulsifier solution simultaneously. After solution I and solution II were added dropwise, the N 2 Protect, stir and react at 60°C for 6h, isolate the microspheres obtained after the reaction, alternately wash the microspheres with ethanol and deionized water to remove impurities, and then vacuum dry to obtain the skeleton polymer microspheres (polyacrylamide microspheres). Infrared spectrum see figure 2 ;

[0042] (2) 1.05 g of the skeleton polymer mic...

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Abstract

The invention relates to a preparation method of CO2 responsive polymer microsphere based on an interpenetrating network structure. The preparation method comprises the steps of: (1) dissolving a compound A and a cross-linking agent in deionized water to form a solution I, dissolving an initiator in the deionized water to form a solution II, continuously supplying nitrogen into the two solutions at room temperature for deoxidization, dissolving an emolsifier in an organic solvent to form an emolsifier solution, synchronously dropwise adding the deoxidized solution I and the solution II into the emolsifier solution by the shield of N2, stirring for reaction at 40-80 DEG C, and (2) mixing and swelling a framework polymer microsphere, a compound B, the cross-linking agent, the initiator and the deionized water at the room temperature to form a swelling mixture, dissolving an emolsifier in an organic solvent to form an emolsifier solution, uniformly mixing the swelling mixture and the emolsifier solution, and stirring for reaction at 40-80 DEG C by the shield of N2. The method can improve dispersity and CO2 responsivity of the CO2 responsive polymer microsphere and achieves the controllable CO2 responsivity.

Description

technical field [0001] The invention belongs to the field of intelligent polymer microspheres and relates to a CO 2 Responsive polymer microsphere and its preparation method. Background technique [0002] Smart polymer microspheres are a new material that can sense changes in the external environment and achieve performance and size changes through self-response adjustments. CO 2 As a greenhouse gas, it is not only cheap and easy to obtain, but also a biological cell metabolite with good biocompatibility and membrane permeability. Using it as a stimulus response factor is not only easy to operate and low in cost, but also does not give The system brings new pollution, and has potential application value in the fields of controlled drug release, biosensing, energy and environmental protection, and oil exploration. Currently CO 2 The preparation of gas stimuli-responsive polymer microspheres mainly includes two ways: the first is to prepare microspheres first, and then CO ...

Claims

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Application Information

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IPC IPC(8): C08F220/56C08F220/60C08F222/38C08F222/14
CPCC08F220/56C08F220/60C08F222/102C08F222/38
Inventor 冯玉军穆蒙
Owner SICHUAN UNIV