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Preparation method of amphoteric cellulose material

A technology of amphoteric cellulose and cellulose, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the problems of insufficient adsorption capacity and difficult realization of cellulose, and achieve reactivity Strong, good prospects for industrialization promotion, strong adsorption capacity

Inactive Publication Date: 2014-01-08
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because of the relative ease of modification, the more common cationic and anionic groups are amino and carboxyl groups. In fact, their adsorption capacity is not as good as that of the corresponding quaternary ammonium and sulfonic acid groups, but the quaternary ammonium and sulfonic acid groups are introduced into the fiber at the same time. It is not easy to realize in prime, so there is no report about this modification method

Method used

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  • Preparation method of amphoteric cellulose material
  • Preparation method of amphoteric cellulose material
  • Preparation method of amphoteric cellulose material

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Weigh 10g of cotton fiber, put it in 400ml of 2% sodium hydroxide solution, boil it for 90min, take it out after cooling, squeeze it dry and put it in 300ml of 18% sodium hydroxide solution, let it stand at room temperature After 120 minutes, take it out, wash it with deionized water, and dry it to obtain alkaline cotton fiber.

[0027] Take 5.0g of basic cotton fiber, place it in a three-necked flask filled with 300ml of acetone, slowly add 5ml of sodium hydroxide solution with a mass concentration of 30% under electric stirring, and then add 9g of 3-chloro-2-hydroxypropyl tris Methylammonium chloride was reacted in a water bath at 45°C for 3 hours, and the pH value of the product was adjusted to neutral with dilute hydrochloric acid, filtered with suction, washed with methanol and absolute ethanol in sequence, and dried to constant weight to obtain quaternized cotton fibers.

[0028] Add 5.0g of quaternized cotton fiber and 400ml of deionized water into a three-necked...

Embodiment 2

[0030] Weigh viscose fiber 10g, place in 300ml mass concentration of 1% sodium hydroxide solution, boil for 60min, take it out after cooling, squeeze dry and place in 280ml mass concentration of 15% sodium hydroxide solution, let stand at room temperature Set it aside for 90 minutes, take it out, wash it with deionized water, and dry it to obtain alkaline viscose fiber.

[0031] Take 6.0g of alkaline viscose fiber, place it in a three-necked flask equipped with 320ml of acetone, slowly add 6ml of a mass concentration of 30% sodium hydroxide solution dropwise under electric stirring, and then add dropwise 15g of 3-chloro-2-hydroxypropyl Trimethylammonium chloride, after reacting in a water bath at 50°C for 200min, adjust the pH value of the product to neutral with dilute hydrochloric acid, filter with suction, wash with methanol and absolute ethanol in sequence, and dry at 40°C to constant weight to obtain quaternized ammonium viscose glue fiber.

[0032]Add 5.0g of quaternize...

Embodiment 3

[0034] Weigh 10g of microcrystalline cellulose, put it in 250ml of 0.5% sodium hydroxide solution, boil for 60min, filter it with suction after cooling, put it in 200ml of 10% sodium hydroxide solution, and let it stand at room temperature After 120 minutes, take it out, wash it with deionized water, and dry it to obtain alkaline microcrystalline cellulose.

[0035] Take 8.0g of basic microcrystalline cellulose, place in a three-necked flask equipped with 200ml of acetone, slowly add 8ml of a mass concentration of 10% sodium hydroxide solution dropwise under magnetic stirring, and then add dropwise 16g of 3-chloro-2-hydroxypropyl Trimethyl ammonium chloride, after reacting in a water bath at 45°C for 3 hours, adjust the pH value of the product to neutral with dilute hydrochloric acid, filter it with suction and wash it with methanol and absolute ethanol in turn, and dry it at 60°C to constant weight to obtain quaternized ammonium microcrystalline cellulose.

[0036] Add 5.0g ...

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Abstract

The invention discloses a preparation method of amphoteric cellulose material. The method includes: performing alkali pretreatment on cellulose to obtain alkali cellulose and achieve hydroxyl activation, using 3-chloro-2 hydroxypropyl trimethyl ammonium chloride as etherifying agent to perform quaternization modification on the alkali cellulose to obtain quaternized cellulose, using ceric ammonium nitrate as initiator and monomer 2-acrylamide-2-methyl propane sulfonic acid to perform sulphonation on the quaternized cellulose so as to achieve amphoterism of the cellulose. Preparation conditions are mild, the process is simple, operation is convenient, scaling is easy, the method has promising industrial popularization prospect, and products have high adsorption capacity, can be applied to the fields such as treatment of heavy metal ion waste water and treatment of organic waste water and can also be used as functional carriers of other materials.

Description

technical field [0001] The invention relates to a preparation method of an amphoteric fiber material, in particular to a preparation method of quaternary ammonium-sulfonated cellulose, and belongs to the field of material modification and processing. Background technique [0002] Cellulose is the most abundant natural organic renewable resource on the earth. The global annual output exceeds 100 billion tons, but less than 1 / 10 of the total amount is utilized in the state of cellulose, and a large part of cellulose is unused or unused. If it is used rationally, if it is dissipated with the burning of straw, wood, etc. or the discharge of related wastes, it will not only seriously pollute the environment, but also cause a great waste of resources. With the rapid decline of reserves of non-renewable resources such as petroleum and coal and the increasing concern of various countries for environmental requirements, cellulose, as a renewable green resource, has long been valued b...

Claims

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Application Information

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IPC IPC(8): C08F251/02C08F220/58C08B11/145B01J20/26C02F1/28C02F1/62
Inventor 陈宇岳熊佳庆林红苏公磊
Owner SUZHOU UNIV
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