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Characterization method of interfacial polymerization reaction and characterization device of interfacial polymerization reaction

A technology of interfacial polymerization and reaction, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of inability to accurately characterize the kinetic process of interfacial polymerization reaction film formation, and the inability to obtain information on the film formation process of interfacial polymerization film in situ

Active Publication Date: 2021-05-28
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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Problems solved by technology

[0003] However, most of the methods for studying the kinetics of interfacial polymerization in traditional technologies use ex-situ characterization techniques, which cannot obtain information on the film-forming process of interfacial polymerization films in situ, and cannot accurately characterize the film-forming kinetics of interfacial polymerization.

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  • Characterization method of interfacial polymerization reaction and characterization device of interfacial polymerization reaction
  • Characterization method of interfacial polymerization reaction and characterization device of interfacial polymerization reaction
  • Characterization method of interfacial polymerization reaction and characterization device of interfacial polymerization reaction

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Embodiment 1

[0114] The optical coherence tomography instrument in the characterization device of the interfacial polymerization reaction in this embodiment adopts a commercial optical coherence tomography instrument (OCT, GANYMEDE-SP5, Thorlabs, the United States), and the horizontal resolution is 2 microns, and the vertical resolution The rate is 4 microns. The combination of the optical coherence tomography unit and the galvanometer makes it possible to perform a series of scans along a straight line or in a rectangular area. In addition, the optical coherence tomography unit in this embodiment uses a spectrometer to analyze the interference pattern, and the frequency-domain optical coherence tomography scanner can make a single-point scanning rate as high as 30,000 Hz.

[0115] The reaction mechanism of this example was used to perform characterization tests. The reaction mechanism was assembled from two upper and lower plexiglass plates (180 mm × 90 mm × 15 mm) with a rectangular cha...

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Abstract

The invention relates to a characterization method of interface polymerization reaction and a characterization device of interface polymerization reaction. The characterization method of the above-mentioned interfacial polymerization reaction comprises the following steps: providing a reaction chamber containing a first mixed solution; passing a second solvent into the reaction chamber so that the second solvent flows through the liquid surface of the first mixed solution; detecting the reaction The initial reflected light intensity at different depths of the chamber is used to calculate the position of the interface; the second mixed solution is passed into the reaction chamber so that the second mixed solution flows through the liquid level of the first mixed solution, and the difference in the reaction chamber is detected at the same time. Real-time reflected light intensity at depth; calculate the real-time reflected light intensity at different relative depths according to the position of the interface and the real-time reflected light intensity at different depths; and establish the relationship curve between reflected light intensity and time at each relative depth . The above-mentioned characterization method for interfacial polymerization can use in-situ characterization technology to accurately obtain information about the film-forming process of the interfacial polymerization film.

Description

technical field [0001] The invention relates to the technical field of interface polymerization, in particular to a method for characterizing an interface polymerization reaction and a device for characterizing an interface polymerization reaction. Background technique [0002] Interfacial polymerization is a very important method for the synthesis of various polymer films. Thin films prepared by this method are widely used in membrane separation, microencapsulation technology and other fields. The preparation of interfacially polymerized films can be achieved by dissolving two complementary monomers (such as diamines and acid chlorides) in two immiscible solvents (such as water and hexane) and contacting them. The polycondensation reaction at the two-phase interface is a self-enclosed and self-limiting process, and the physicochemical properties of the film prepared by this reaction are closely related to its reaction kinetics. Therefore, accurately characterizing the fil...

Claims

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Application Information

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IPC IPC(8): G01N21/17
Inventor 李炜怡刘鑫李卓刘格王莅
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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