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Method of preparing carboxymethylcellulose by use of manioc waste

A technology of carboxymethyl cellulose and cassava residues, applied in the field of preparation methods of carboxymethyl cellulose, can solve problems such as inability to handle rationally, cassava residues pollute the environment, etc. The effect of increasing income

Inactive Publication Date: 2014-09-17
INNER MONGOLIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The advantages of the present invention are: 1. Effectively realize the transformation of cassava residues into treasures, and solve the problem that cassava residues pollute the environment and cannot be reasonably treated in industrial production

Method used

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  • Method of preparing carboxymethylcellulose by use of manioc waste

Examples

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Embodiment 1

[0010] Example 1: Measure 50.0 ml of deionized water and add it into a reaction vessel, weigh 10 g of cassava residue, and add the cassava residue under constant stirring. Weigh 0.823g of sodium hydroxide and dissolve it in 5ml of deionized water. After the heat release is complete and the sodium hydroxide is completely dissolved, add it to the reaction vessel and soak for 6 hours, then raise the temperature to 30°C for 1.5 hours of alkalization under constant stirring, accurately Weigh 2.40g of sodium chloroacetate and dissolve it in 10ml of deionized water, raise the temperature to 75°C, slowly add the above solution under stirring to etherify for 1h, dry and crush to 80 mesh, repeat the above steps three times to obtain carboxymethyl with a substitution degree of 0.20 Cellulose-based products;

Embodiment 2

[0011] Example 2: Measure 50.0 ml of deionized water and add it into the reaction container, weigh 10 g of cassava residue, and add the cassava residue under constant stirring. Weigh 1.00g of sodium hydroxide and dissolve it in 5ml of deionized water. After the exotherm is complete and the sodium hydroxide is completely dissolved, add it to the reaction vessel and soak for 6 hours, then raise the temperature to 30°C for 1.5 hours with constant stirring, and make it alkaline for 1.5 hours. Weigh 3.595g of sodium chloroacetate and dissolve it in 10ml of deionized water, raise the temperature to 75°C, slowly add the above solution under stirring to etherify for 1 hour, dry and crush to 80 mesh, repeat the above steps three times to obtain carboxymethyl with a substitution degree of 0.29 Cellulose-based products;

Embodiment 3

[0012] Example 3: Measure 50.0 ml of deionized water and add it into the reaction vessel, weigh 10 g of potato residues, and add the potato residues under constant stirring. Weigh 1.235g of sodium hydroxide and dissolve it in 5ml of deionized water. After the heat release is complete and the sodium hydroxide is completely dissolved, add it to the reaction vessel and soak for 6 hours, then raise the temperature to 30°C for 1.5 hours under constant stirring, and make it alkaline for 1.5 hours. Weigh 2.40g of sodium chloroacetate and dissolve it in 10ml of deionized water, raise the temperature to 75°C and slowly add the above solution under stirring to etherify for 1h, dry and crush to 80 mesh, repeat the above steps three times to obtain carboxymethyl with a substitution degree of 0.38 Cellulose-based products;

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Abstract

The invention discloses a method of preparing carboxymethylcellulose by use of manioc waste. The method mainly comprises the following craft processes: firstly, continuously stirring 10g of dried manioc waste so as to enable the dried manioc waste to be dispersed to 50g of deionized water; then, adding 0.823-2.47g of sodium hydroxide and soaking for 6 hours at a normal temperature; then, alkalizing for 1.5 hours under a water bath condition of 30 DEG C; heating to 75 DEG C and then adding 2.40-3.595g of sodium chloroacetate; reacting for 1 hour, taking out and drying; smashing and grinding, and then repeating the steps above; repeating the reaction for three times to obtain the carboxymethylcellulose with the degree of substitution within 0.20-1.19.

Description

technical field [0001] The present invention relates to an anti-fouling redeposition agent used in daily chemical cleaning products, a printing and dyeing auxiliary agent in the textile industry, a sizing agent in the paper industry, an adhesive in the feed and ceramic industry, and a mud drilling agent and reducing agent for oil field exploitation. The preparation method of the carboxymethyl cellulose of the dehydration agent particularly refers to the method of preparing carboxymethyl cellulose with cassava residue and sodium chloroacetate as main raw materials. Background technique [0002] Carboxymethyl cellulose is a water-soluble cellulose ether, and its sodium salt has practical value. So in general, carboxymethyl cellulose refers to sodium carboxymethyl cellulose. The raw material for preparing carboxymethyl cellulose is generally cotton or cotton linters. Due to the high price of the raw material, the cost of carboxymethyl cellulose products is high. [0003] Cas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B11/12
Inventor 温国华杨永启冯凯刘广华郭玉婷王晨雪马贺成莫国莉陈超柳青赵红霞
Owner INNER MONGOLIA UNIVERSITY
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