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A kind of block polymer ordered porous film material containing melamine structure and its preparation and film-forming method

A block polymer, melamine technology, applied in the field of polymer materials, can solve the problems of affecting the performance of porous membranes, restricting uses, difficult to modify, etc.

Active Publication Date: 2019-04-02
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, these monomers lack functional groups, which makes it difficult to modify the polymer after film formation, and it is difficult to further functionalize the porous membrane, which greatly limits its application.
In addition, most porous membranes prepared by amphiphilic block copolymers will form secondary pore structures on the polymer walls between pores (Polym.Chem., 2013, 4, 4710; Macromol. Rapid Commun., 2011, 32, 1072 .), affecting the performance of the porous membrane

Method used

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  • A kind of block polymer ordered porous film material containing melamine structure and its preparation and film-forming method
  • A kind of block polymer ordered porous film material containing melamine structure and its preparation and film-forming method
  • A kind of block polymer ordered porous film material containing melamine structure and its preparation and film-forming method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The preparation method of the ordered porous membrane material of block polymer containing melamine structure is as follows:

[0044] (1) Preparation of polystyrene macroinitiator by atom transfer radical polymerization method

[0045] Toluene (20mL), styrene (36.04g, 436mmol), ethyl 2-bromopropionate (209mg, 1.15mmol), pentamethyldiethylenetriamine (84μL, 0.4mmol), copper powder (18.5mg, 0.289 mmol) and copper dibromide (25.7mg, 0.115mmol) were added to a 100mL flask with a magnetic stirrer. After six times of freezing-pumping-melting to remove the air in the reaction flask, the temperature was raised to React at 90°C for 70 hours, and terminate the reaction with liquid nitrogen. Add 40 mL of dichloromethane to the flask to dilute the reaction solution, and use a neutral alumina column to remove unreacted copper powder and divalent copper complexes. The solution was collected, concentrated to 10 mL, and then precipitated twice with excess cold methanol, and dried under va...

Embodiment 2

[0053] In this embodiment, the preparation steps of the block polymer ordered porous membrane material containing the melamine structure are different from those in Example 1 in that the amount of N-succinimide methacrylate in step (2) is 0.0915g, 0.5mmol. The resulting polymer structural formula is:

[0054]

[0055] n=220, m=1.

Embodiment 3

[0057] In this embodiment, the preparation steps of the block polymer ordered porous membrane material containing the melamine structure are different from that in Example 1 in that the amount of N-succinimide methacrylate in step (2) is 0.183g, 1mmol. The resulting polymer structural formula is:

[0058]

[0059] n=220, m=2.

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Abstract

The invention provides a block polymer ordered porous film material containing a melamine structure. The polymer is polystyrene-b-poly2-(N'-methyl-N'-triaminopropyl-1, 3-propylenediamine methacrylamide)-4, 6-bis(N, N-dimethyl ethylenediamin)-1, 3, 5-triazine. The polymer is obtained by introducing a small amount of hydrophilic melamine derivative into a polystyrene chain. The invention also provides a method for preparation of an ordered porous film from the polymer. The polymer can be dissolved in a volatile organic solvent to form a porous film under the blowing of moist air. The ordered porous film prepared from the polymer has highly regular pore structure and high content functional groups, and the polymer wall among the micropores does not has secondary pore structure.

Description

Technical field [0001] The invention belongs to the field of polymer materials, and specifically relates to an amphiphilic block polymer. Background technique [0002] Membrane technology has become one of the most promising projects in the 21st century. Microporous membranes with ordered structures have important scientific value in many fields such as photonic crystals, separation membranes, high-efficiency catalysts, micro-reactors, and micro-module arrangements. Application prospects. Ordered polymer porous film materials based on the breathing pattern method have shown good application prospects in the fields of chemistry, biology, life sciences and functional materials, such as optoelectronic devices, nanoparticle separation, superhydrophobic surfaces, tissue engineering, etc. aspect. [0003] Since the French scientist Bernard Et al. first reported in 1994 that the use of water vapor condensed water droplets as a template (that is, the breathing pattern method) to prepare...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F293/00C08J9/28
Inventor 殷鸿尧冯玉军
Owner SICHUAN UNIV