Polyamide material with surface modified with quaternary ammonium salt and salicylaldehyde functional groups and preparation method of polyamide material

A functional group and surface modification technology, applied in the field of functional polymer materials, can solve the problems of waste of monomer raw materials, reduction of permeability, micropore blockage of polyamide materials, etc., achieve uniform distribution, reduce drug resistance, and simple method easy effect

Active Publication Date: 2013-10-23
HUAIHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface modification uniformity of the polyamide material prepared by the above method is poor; the required functional groups after modification cannot be fully exposed, and the characteristics and functions of the functional groups are displayed; the grafted copolymer system on the surface of t

Method used

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  • Polyamide material with surface modified with quaternary ammonium salt and salicylaldehyde functional groups and preparation method of polyamide material
  • Polyamide material with surface modified with quaternary ammonium salt and salicylaldehyde functional groups and preparation method of polyamide material
  • Polyamide material with surface modified with quaternary ammonium salt and salicylaldehyde functional groups and preparation method of polyamide material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1T

[0048] Example 1TDI-Et 2 Preparation of N-CMS-PA-66

[0049] Step 1, the preparation of TDI-PA-66

[0050] Take the purified and dried nylon-66 microfiltration membrane with a weight of 0.7751 grams produced by Shanghai Chuding Analytical Instrument Co., Ltd. and the model is 50mm*0.45μm. Immerse it in 1,4-dioxane solvent and activate it at room temperature for 24 hours. . Weigh 0.55 g of toluene diisocyanate and dissolve it in 2.5 ml of 1,4-dioxane solvent, add an appropriate amount of 4-dimethylaminopyridine to prepare a toluene diisocyanate solution. After taking out the activated nylon-66 microfiltration membrane and drying it by centrifugation, immerse the nylon-66 microfiltration membrane in toluene diisocyanate solution, control the temperature to 60-65°C and seal the reaction for 2 hours, then use 1,4- Dioxane solvent washes the nylon-66 microfiltration membrane after reaction, removes free toluene diisocyanate, and dries, that is, the nylon-66 microfiltration membr...

Embodiment 2D

[0055] Embodiment 2DMI-Et 2 Preparation of N-CMS-PA-66

[0056] According to the method and operating steps of Example 1, the toluene diisocyanate in Step 1 of Example 1 was replaced with diphenylmethane diisocyanate (abbreviated as DMI), and DMI-Et 2 N-CMS-PA-66.

Embodiment 3

[0057] Example 3TDI-Et 2 Preparation of NPEG-CMS-PA-66

[0058] According to the method and operation steps of Example 1, the N,N-diethylethanolamine in Step 2 of Example 1 was replaced with monodiethylamino polyethylene glycol (abbreviated as Et 2 NPEG), TDI-Et was obtained 2 NPEG-CMS-PA-66.

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Abstract

The invention provides a polyamide material with the surface modified with quaternary ammonium salt and salicylaldehyde functional groups. The polyamide material has the characteristics that (1) a method for planting salicylaldehyde and quaternary ammonium salt functional groups on the surface of the polyamide material in a dot matrix manner is simple and feasible, and the planting density can be chemically adjusted according to a demand, (2) the uniformity of the surface modification of the polyamide material by salicylaldehyde and quaternary ammonium salt functional groups which are arranged in a dot matrix manner is high, and the microporous structure and the ventilating property of the polyamide material are not changed, (3) the quaternary ammonium salt and salicylaldehyde functional groups are used for modifying the surface of the polyamide material, so that the hydrophilcity of the surface of the polyamide material can be improved, and the killing antibiosis performance of the polyamide material is improved, and (4) the salicylaldehyde functional group on the surface of the polyamide material also has a function of selectively chelating and adsorbing heavy metal ions and can be also condensed with amino acid, semi carbazide or hydrazine to prepare Schiff base for chelated resin, a solid carrier catalyst, killing antibiosis, template synthetic peptide, a photoelectric material or a separation engineering material.

Description

technical field [0001] The invention relates to a polyamide functional material, in particular to a polyamide material surface-modified by a quaternary ammonium salt and a salicylaldehyde functional group, and belongs to the field of functional polymer materials. technical background [0002] Polyamide is a general term for aliphatic polyamides and aromatic polyamides. It has excellent comprehensive properties and is widely used in polyamide fibers, polyamide textiles, polyamide non-woven fabrics, polyamide films, and polyamide-coated composite materials. In many fields of life and industrial production. In practical applications, polyamide materials are required to have appropriate properties such as aging resistance, surface anti-fog, surface conductivity, surface hardness, surface hydrophilicity and surface antifouling. To obtain polyamide materials with excellent surface properties, it is a flexible, simple and quick method to modify the surface of polyamide materials, ...

Claims

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Application Information

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IPC IPC(8): D06M13/395D06M13/368D06M15/53D06M13/156C08J7/12D06M101/34
Inventor 张田林李蕊阳董保国张可人
Owner HUAIHAI INST OF TECH
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