Preparation method of octenylsuccinate hydroxyethyl bean-dreg cellulose ester

A technology of octenyl succinic acid hydroxyethyl bean dregs and octenyl succinic acid, which is applied in chemical instruments and methods, transportation and packaging, dissolution, etc., can solve problems such as difficulty in improving surface activity, and achieve increased added value, Low production cost, the effect of solving resource waste and environmental pollution

Inactive Publication Date: 2011-05-25
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of hydrophobic groups matching the hydrophilic groups in its macromolecular chains, it is difficult to improve the surface activity; at the same time, in some cases, it is necessary to properly improve its hydrophobicity, thickening and thermal stability, so that It has a better use effect, so that it has a wider application prospect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Disperse 20 g of hydroxyethyl okara cellulose in 30 mL of water / ethanol system (wherein water is 3 mL and ethanol is 27 mL) to form a sludge, and the pH value of the system is adjusted to 8.5 with 5% NaOH solution, and 2 g of octenyl amber Dissolve and dilute the acid anhydride with 10mL of ethanol, slowly add it dropwise to the hydroxyethyl okara cellulose sludge, then stir and react at 40°C, and use 5% NaOH solution to maintain the pH value of the system at about 8.5, react for 3 hours, add dropwise 3% hydrochloric acid until the pH of the system is between 6.5 and 7.0, stop the reaction, and let stand. Wash with ethanol, dry in an oven at 50°C, pulverize, and pass through an 80-mesh sieve to obtain the product. The product is a light yellow powder with no peculiar smell, and the measured substitution degree of the product is 0.0186.

Embodiment 2

[0018] Disperse 20 g of hydroxyethyl okara cellulose in 25 mL of water / ethanol system (5 mL of water and 20 mL of ethanol) to form a sludge, adjust the pH value of the system to 8.5 with 4% NaOH solution, and dissolve 2 g of octenyl amber Dissolve and dilute the acid anhydride with 10mL of ethanol, slowly add it dropwise to the cellulose sludge of hydroxyethyl okara cellulose, then stir and react at 45°C, during which, use 4% NaOH solution to maintain the pH value of the system at about 8.5, react for 4 hours, add dropwise 3% hydrochloric acid until the pH of the system is between 6.5 and 7.0, stop the reaction, and let stand. Wash with ethanol, dry in an oven at 55°C, pulverize, and pass through an 80-mesh sieve to obtain the product. The product is a light yellow powder with no peculiar smell, and the measured substitution degree of the product is 0.0209.

Embodiment 3

[0020] Disperse 20 g of hydroxyethyl okara cellulose in 20 mL of water / ethanol system (wherein water is 2 mL and ethanol is 18 mL) to form a sludge, and the pH value of the system is adjusted to 8.0 with 3% NaOH solution, and 2 g of octenyl amber Dissolve and dilute the acid anhydride with 10mL of ethanol, slowly drop it into the hydroxyethyl okara cellulose sludge, and then react with stirring at 40°C, during which time, use 3% NaOH solution to maintain the pH value of the system between 8.0 and 8.5, and react for 5 hours , add dropwise 3% hydrochloric acid until the pH value of the system is between 6.5 and 7.0, stop the reaction, and let stand. Wash with ethanol, dry in an oven at 55°C, pulverize, and pass through an 80-mesh sieve to obtain the product. The product is a light yellow powder with no peculiar smell, and the measured substitution degree of the product is 0.0196.

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Abstract

The invention discloses a method for preparing octenylsuccinate hydroxyethyl bean-dreg cellulose ester from hydroxyethyl bean-dreg cellulose and octenyl succinic anhydride, which comprises the following steps: dissolving hydroxyethyl bean-dreg cellulose in a water/ethanol system to form a silt state, carrying out an esterification reaction with octenyl succinic anhydride in an alkaline environment, washing with ethanol, drying and pulverizing to obtain the product. The product is light yellow powder, has the advantages of no peculiar smell and high solubility, and has certain emulsibility and surface activity. The preparation method provided by the invention has the advantages of cheap and easily obtained raw material (bean dregs), and low production cost, is simple and easy to operate, can increase the added value of the bean dregs, and partially solves the problems of waste of resources and environmental pollution caused by waste bean dregs.

Description

technical field [0001] The invention relates to the modification of okara cellulose, in particular to the preparation of octenyl succinic acid hydroxyethyl okara cellulose ester. Background technique [0002] my country is the main country that grows soybeans in the world, and it is also the main consumer country of soybeans. It has rich experience and relatively mature technology in soybean processing and treatment. Because soybeans are rich in various nutrients, the soybean processing industry is booming and in the ascendant. With the increase of soybean processing, the output of the main by-product bean dregs in the processing technology is also increasing day by day. Due to the poor taste of bean dregs and high water content, it is not easy to store, so except that some bean dregs are used as animal feed, most of the bean dregs are not obtained. Making full use of them will not only cause waste of resources, but also cause environmental pollution. [0003] There are ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B13/00B01F17/34B01F17/48C09K23/34C09K23/48
Inventor 郑为完杨婧
Owner NANCHANG UNIV
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