A kind of azide coupling gelatin adsorption material and preparation method thereof

An adsorption material, gelatin technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of slow washing speed, high price, limited durability of adsorption materials, etc., and achieve low pressure loss of filtered water flow and high filtration stability The effect of sex and steric hindrance

Inactive Publication Date: 2016-08-03
KUNMING UNIV OF SCI & TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PVPP resin has evacuated nitrogen-containing five-membered rings and amide bonds, has active sites for specific interaction with tannins, and can selectively adsorb plant polyphenols, but it is limited to polyphenol-rich beverages and is expensive and slow to wash out
The collagen fiber adsorption material disclosed in Chinese patent 02134173.7 utilizes the specific interaction between collagen and tannin molecules to achieve selective adsorption and removal of tannin, but there are problems such as limited supply of animal skin and durability of the adsorption material.
The main problems are: (1) Polyvinyl chloride or its copolymers should be used to pre-prepare polymer resin-based polyazide compounds in the preparation of adsorption materials, and organic solvents should be used in the preparation and coating on the surface of non-woven fabrics; ( 2) The hydrophilicity of the adsorption material is not satisfactory enough
Chinese invention application 201310186790.2 discloses a non-woven fabric surface diazo-coupled gelatin adsorption material and its preparation method, which can effectively remove tannins in water-based solutions and overcome the main problems in Chinese invention patent 2010105597364.4 , but the introduction of aromatic amine groups on non-woven fabrics is realized by the catalytic condensation reaction between carboxyl groups on non-woven fabrics and aromatic diamines. This process has the following problems: (1) N , N, dimethylformamide (DMF) and other organic solvents; (2) It needs to be reacted for several hours at a temperature exceeding 100 °C with a strong acid catalyst; (3) Its coupling and fixation to gelatin is made using diazonium salts It is realized by chemical coupling with gelatin in the solution, and the reaction time of coupling and fixation is long; (4) and the application of the adsorption material only involves the adsorption and removal of tannins in the water-based solution, but does not involve the removal of tannins in the actual product system. The adsorption removal of the adsorption material does not consider the adsorption selectivity of the adsorption material in the multi-component solution

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of azide coupling gelatin adsorption material and preparation method thereof
  • A kind of azide coupling gelatin adsorption material and preparation method thereof
  • A kind of azide coupling gelatin adsorption material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1: the preparation method of the azide coupling gelatin adsorption material based on carboxyl-diazonium salt electrostatic self-assembly on the surface of non-woven fabric, the specific operation is as follows:

[0053] (1) Preparation of PP non-woven acrylic acid grafted product

[0054] Refer to the method in the Chinese patent application (application number 201010559722.2) "A high carboxyl content ion-exchange non-woven fabric and its preparation method", the specific operation is as follows:

[0055] A. Cut a batch of circular PP non-woven fabrics with a diameter of 8cm (commercially available, specification: 12.5g / m 2 , thickness 73.8 μm, water absorption rate 52.1%), soak in acetone for 12 hours, remove surface oil and additives and other impurities, take it out and dry it for later use;

[0056] B. Make a mixed solvent of acetone and distilled water according to 50% (volume percentage), add acrylic acid, benzophenone and azobisisobutyronitrile to mak...

Embodiment 2

[0074] Embodiment 2: the preparation method of the azide coupling gelatin adsorption material based on carboxyl-diazonium salt electrostatic self-assembly on the surface of non-woven fabric, the specific operation is as follows:

[0075] (1) Preparation of PP non-woven acrylic acid grafted product

[0076] Refer to the method in the Chinese patent application (application number 201010559722.2) "A high carboxyl content ion-exchange non-woven fabric and its preparation method", the specific operation is the same as the step (1) of Example 1, and this example uses polypropylene (PP) For non-woven fabrics, the carboxyl group-containing unsaturated monomer is acrylic acid, and the carboxyl content Sg of the acrylic acid grafted product of the obtained PP non-woven fabric is 10.3 mmol / g, and its water absorption rate is 485.4%.

[0077] (2) Preparation of p-phenylenediamine monodiazonium salt solution and electrostatic self-assembly of non-woven fabric grafted product and p-phenyle...

Embodiment 3

[0092] Embodiment 3: the preparation method of the azide coupling gelatin adsorption material based on carboxyl-diazonium salt electrostatic self-assembly on the surface of non-woven fabric, the specific operation is as follows:

[0093] (1) Preparation of PP non-woven acrylic acid grafted product

[0094] Refer to the method in the Chinese patent application (application number 201010559722.2) "A high carboxyl content ion-exchange non-woven fabric and its preparation method", the specific operation is the same as the step (1) of Example 1, this example uses polypropylene (PP) For non-woven fabrics, the carboxyl-containing unsaturated monomer is acrylic acid, and the carboxyl content Sg of the acrylic acid grafted product of the obtained PP non-woven fabric is 10.7mmol / g, and its water absorption rate is 492.1%.

[0095] (2) Preparation of p-phenylenediamine monodiazonium salt solution and electrostatic self-assembly of non-woven fabric grafted product and p-phenylenediamine m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
adsorption capacityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses an adsorbing material for azide method coupling gelatin and a preparation method of the adsorbing material. The preparation method comprises the following steps: grafting an unsaturated monomer containing carboxyl on the surface of a macromolecular non-woven base material to introduce the carboxyl by employing an ultraviolet induction technology; introducing aromatic amino by employing electrostatic self-assembly of aromatic diamine diazonium salt and the carboxyl, and transforming into an azide group; decomposing into active nitrene under ultraviolet irradiation, fixing gelatin on a non-woven surface through inserting reaction of nitrene; and finally soaking in hot water, and removing uncoupled gelatin to prepare the absorbing material. The adsorbing material is relatively good in hydrophilia; the carrier content and the water absorption rate of the gelatin can be adjusted within a large range; and the adsorbing material has relatively high adsorption capacity on tannin, has a selective absorption effect on adsorption of the tannin in green tea and emblic leafflower fruit extracts, and also has the selective absorption effect on condensed tannin in the green tea extract.

Description

technical field [0001] The invention relates to an azide coupling gelatin adsorption material and a preparation method thereof, specifically an azide coupling gelatin adsorption material based on carboxyl-diazonium salt electrostatic self-assembly on the surface of a non-woven fabric and a preparation method thereof, belonging to field of adsorption separation. Background technique [0002] Molecular assembly is a technology for building materials at the molecular level, which originated in biological systems. The intermolecular layer-by-layer assembly technology was first proposed by Decher et al. in 1991. This is a film-forming technology that can control the composition, size and shape of the film. Molecular self-assembly with electrostatic force as the driving force is the most common. It realizes molecular self-assembly and film formation on the substrate through electrostatic adsorption between opposite charges (DecherG, HongJD.Buildupofultrathinmultilayerfilmsbyself-...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30
CPCB01J20/265
Inventor 唐辉张晓春
Owner KUNMING UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap