Preparation method of nanoscale 3-aminophenol formaldehyde resin particles based on microfluidic technology

A microfluidic technology and formaldehyde resin technology, which is applied in the field of preparation of nano-scale 3-aminophenol formaldehyde resin particles, can solve the problems of low efficiency heat and mass transfer, rough process parameter control, etc.

Active Publication Date: 2021-07-06
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the final prepared resin also shows a good application effect, the problems of rough process parameter control and inefficient heat and mass transfer during the thermal polymerization of formaldehyde and 3-aminophenol have not been fundamentally solved

Method used

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  • Preparation method of nanoscale 3-aminophenol formaldehyde resin particles based on microfluidic technology
  • Preparation method of nanoscale 3-aminophenol formaldehyde resin particles based on microfluidic technology
  • Preparation method of nanoscale 3-aminophenol formaldehyde resin particles based on microfluidic technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Preparation of microreactor: The PDMS chip is prepared by soft lithography technology. The cross-section of the chip channel is uniformly square, with a side length of 600 μm; the included angle of the raw material adding channel is 45°; the meandering channel has an outer diameter of 2.1 mm and an inner diameter of 1.5 semi-circular channels, the total length is 35mm; the heating pipe is made of PTFE tube, the inner diameter of the tube is 0.6mm, the length of the tube is 15.9m, and the length of the part of the tube wound on the glass rod with an outer diameter of 10mm is 15.1m; one end of the spiral structure PTFE tube and the chip Outlet connection, one end inserted into the Erlenmeyer flask;

[0028] 2) Take 0.35g of 3-aminophenol, 0.75g of formaldehyde, and 0.52g of ammonia water and dissolve them in 10mL of water respectively. After fully dissolving, inhale into a 10mL syringe, and fix the syringe on the digital control micro pump; s Simethicone, inhale into a...

Embodiment 2

[0033] 1) Preparation of microreactor: The PDMS chip is prepared by soft lithography technology. The cross-section of the chip channel is uniformly square, with a side length of 600 μm; the included angle of the raw material adding channel is 45°; the meandering channel has an outer diameter of 2.1 mm and an inner diameter of 1.5 semi-circular channels, the total length is 35mm; the heating pipe is made of PTFE tube, the inner diameter of the tube is 0.6mm, the length of the tube is 15.9m, and the length of the part of the tube wound on the glass rod with an outer diameter of 10mm is 15.1m; one end of the spiral structure PTFE tube and the chip Outlet connection, one end inserted into the Erlenmeyer flask;

[0034] 2) Take 0.35g of 3-aminophenol, 0.75g of formaldehyde, and 0.52g of ammonia water and dissolve them in 10mL of water respectively. After fully dissolving, inhale into a 10mL syringe, and fix the syringe on the digital control micro pump; sSimethicone oil, add 0.01wt...

Embodiment 3

[0039] 1) Preparation of microreactor: The PDMS chip is prepared by soft lithography technology. The cross-section of the chip channel is uniformly square, with a side length of 600 μm; the included angle of the raw material adding channel is 45°; the meandering channel has an outer diameter of 2.1 mm and an inner diameter of 1.5 semi-circular channels, the total length is 35mm; the heating pipe is made of PTFE tube, the inner diameter of the tube is 0.6mm, the length of the tube is 15.9m, and the length of the part of the tube wound on the glass rod with an outer diameter of 10mm is 15.1m; one end of the spiral structure PTFE tube and the chip Outlet connection, one end inserted into the Erlenmeyer flask;

[0040] 2) Take 0.35g of 3-aminophenol, 0.75g of formaldehyde, and 0.52g of ammonia water and dissolve them in 10mL of water respectively. After fully dissolving, inhale into a 10mL syringe, and fix the syringe on the digital control micro pump; sSimethicone oil, add 0.05wt...

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Abstract

The invention discloses a preparation method of nanoscale 3-aminophenol formaldehyde resin particles based on a microfluidic technology. According to the preparation method, a micro-reactor combining a liquid drop generation chip and a spiral pipeline is used; 3-aminophenol, formaldehyde and ammonia water are injected into a chip channel respectively and converged to serve as a dispersion phase, dimethyl silicone oil serves as a continuous phase, liquid drops or liquid columns containing reaction raw materials are generated under shearing action, and final polymerization is completed after the liquid drops or liquid columns pass through the spiral pipeline heated in a water bath; and the size and dispersion performance of the particles can be adjusted by adjusting a flow rate, temperature and reaction time. The invention relates to the simple synthesis method for preparing small-size 3-aminophenol formaldehyde resin spheres with good dispersibility. The method is rapid and safe in reaction and easy to operate; prepared 3-aminophenol formaldehyde resin is small in size and good in dispersity; and the preparation effect of the method is better than the preparation effect of traditional industrial preparation, and the method has very important application value in the field of micro-nano material preparation.

Description

technical field [0001] The invention belongs to the field of nanomaterial preparation based on microfluidic technology, and in particular relates to a method for preparing nanoscale 3-aminophenol formaldehyde resin particles based on microfluidic technology. Background technique [0002] Among various phenolic resins, 3-aminophenol-formaldehyde resin has a stable three-dimensional structure and is widely used to prepare the matrix of functional materials. Good application prospects (Xiao Q. et al. Mater. Chem. Phys. 2020, 239; Du, J. et al. Carbon, 2020, 156, 523-528; Tian, ​​J. et al. Colloid. Surface. A, 2019 ,568,195-203), especially the nanoscale resin spheres show good biocompatibility in biomedical applications, and can be further applied to cell delivery vehicles, cell targeting, and imaging (Fang, Y.et al.Angew.Chem., Int.Ed.2010,49,7987-7991; Motawie,A.M.; Sadek,E.M.Polym.Adv.Technol.1998,9,837-843; 2020, 401, 126063). With the increasing application of phenolic ...

Claims

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Application Information

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IPC IPC(8): C08G8/16
CPCC08G8/16
Inventor 刘海湖刘枫
Owner XI AN JIAOTONG UNIV
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