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Polymer rheological conformation observation instrument based on far-field microscope

A polymer and microscope technology, used in instruments, measuring devices, scientific instruments, etc., to solve problems such as errors and inaccuracies

Pending Publication Date: 2022-05-27
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the occurrence of the FRET phenomenon requires the presence of molecular donors and acceptors at the same time. If during the characterization process, due to synthetic defects, only molecular donors or acceptors exist at both ends of the molecule, or both ends of the molecule have both donors and acceptors, it will be get inaccurate or even wrong results

Method used

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  • Polymer rheological conformation observation instrument based on far-field microscope
  • Polymer rheological conformation observation instrument based on far-field microscope
  • Polymer rheological conformation observation instrument based on far-field microscope

Examples

Experimental program
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Embodiment 1

[0047] combine Image 6 Specifically describe a polymer rheological conformation observer based on a far-field microscope provided by the present invention, which realizes the control of the instrument, the synchronization of data acquisition and storage, and the upload of data to the data acquisition software and processing through the system coordinated control software module. The work includes: a coupled rheometer module, a sample cell module, a single molecule fluorescence resonance energy transfer (smFRET) module and a software terminal module; one end of the software terminal module is connected to the single molecule fluorescence resonance energy transfer (smFRET) module, The coupling rheometer module is connected, and the other end of the software terminal module is connected with the other end of the coupling rheometer module; one end of the sample cell module is connected with the coupling rheometer module, and the other end is connected with the single molecule fluo...

Embodiment 2

[0053] A specific embodiment of the mechanical device part of the polymer rheological conformation observer of the present invention is as follows: figure 2 (not all parts of each module are shown in the figure, such as software control parts, etc.), including: horizontal position adjustment and fixing unit 1, rotary motor 2, rheological fixture power plate 3, optical glass 4, microscope body 5 , a fixed stage 6, a horizontal support beam 7 with a position adjustment track, a support column 8 with a position adjustment track, a height adjustment and fixing unit 9 and a rheometer base 10; Together, they form the fixture part of the rotational rheometer, and the microscope main body 5 is a fluorescence microscope with a dual-channel spectroscopic light path, and the interior should include lasers, spectroscopic systems, photon counters and other parts. The polymer rheological conformation observer can be mainly divided into the coupling of two mechanical device main bodies, a r...

Embodiment 3

[0057] The difference between this embodiment and the second embodiment is: Difference 1. According to the different geometric structures of the current rotational rheometer, the fixtures are suitable for different test ranges, and a flat plate ( image 3 ), cone and plate ( Figure 4 ). For example, cone-and-plate testing with an inverted cone structure is suitable for testing very small samples, has excellent temperature control, constant shear rate, and does not require a preset rheological model, but is not suitable for testing multiphase systems, nor does it Suitable for temperature scanning experiments. The flat plate fixture is suitable for measuring polymer blends and heterophasic polymer systems, and the distance between the plates is easily adjustable and can be used at higher shear rates, but may cause end-effects. Therefore, the appropriate fixture can be selected according to the needs of the test sample. In addition, two modes can also be selected by the mecha...

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Abstract

The invention relates to a macromolecule rheological conformation observation instrument based on a far-field microscope. The macromolecule rheological conformation observation instrument comprises a coupling rheometer module, a sample pool module, a single-molecule fluorescence resonance energy transfer module and a software terminal module, one end of the software terminal module is connected with the single-molecule fluorescence resonance energy transfer module and the coupling rheometer module, and the other end of the software terminal module is connected with the other end of the coupling rheometer module; one end of the sample pool module is connected with the coupling rheometer module, and the other end of the sample pool module is connected with the single-molecule fluorescence resonance energy transfer module. According to the macromolecule rheological conformation observer based on the far-field microscope, the physical characteristic that energy transfer is attenuated along with the distance between a fluorescent donor and a fluorescent receptor is utilized, conformation information of macromolecules in the flowing and deformation process can be accurately measured, and a mechanical sensor is combined; the conformation and rheological signals such as stress, strain, viscosity, modulus and the like of macromolecules can be simultaneously detected in the flowing and deformation processes of the macromolecules.

Description

technical field [0001] The invention belongs to the technical field of measuring device design and measuring method for polymer rheological properties, and particularly relates to a polymer rheological conformation observer based on a far-field microscope. Background technique [0002] Synthetic polymers are one of the major inventions that have changed human life and appearance in the world for a thousand years. Although the production capacity of general polymer products is strong and the quantity is huge, the quality and performance of high-end polymer products cannot meet the needs of important fields such as national defense, aerospace, medical care, information, and energy. Polymer rheology is the basis for studying the molding and processing of polymer materials. The macroscopic mechanical properties of the material can be improved by processing, renormalizing and optimizing the chain orientation and interchain entanglement at the molecular level. Establishing the c...

Claims

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Application Information

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IPC IPC(8): G01N21/01G01N21/64
CPCG01N21/01G01N21/6402
Inventor 陈洪波王大鹏卢宇源耿韶婕
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI