Synthesis of quasi chitosan-fatty acid salt and development of green surfactant

A surfactant and surface active technology, applied in transportation and packaging, dissolution, chemical instruments and methods, etc., can solve problems such as difficult economy, difficulty in raw material collection and product extraction, and high production cost

Active Publication Date: 2017-08-18
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, chitosan is an ideal raw material, but because of its raw material collection and product extraction difficulties, the production cost is high, and it is difficult to meet the economic barriers.

Method used

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  • Synthesis of quasi chitosan-fatty acid salt and development of green surfactant
  • Synthesis of quasi chitosan-fatty acid salt and development of green surfactant
  • Synthesis of quasi chitosan-fatty acid salt and development of green surfactant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Example 1: Preparation of surface active system with raw materials of different ammonia substitution degrees

[0063] Table 3: Elemental analysis data table of 6 amino-cellulose obtained under different conditions

[0064]

[0065] Weigh the corresponding amount of 6-aminocellulose in a hydrothermal reaction kettle, add 30ml of distilled water to prepare an aqueous solution, add an accurate amount of conjugated linoleic acid, the salt-forming equivalent ratio of the two additions is 2.3:1, and control the reaction temperature After reacting for 4 hours, samples were taken and aged to obtain a 6-aminocellulose-conjugated linoleate mixture aqueous solution.

[0066] Use the K100 automatic surface tensiometer to measure the synthetic product aqueous solution series of raw materials with different ammoniated substitution degrees, draw the surface tension curve, and obtain the critical micelle concentration of the synthesized products from raw materials with different amm...

Embodiment 2

[0068] Example 2: Preparation of 6-aminocellulose with microcrystalline cellulose as biomass raw material (the degree of sulfonated substitution is 1.41, and the degree of ammoniated substitution is 0.36), and soybean oil is used as raw material to prepare mixed conjugated cellulose by alkali isomerization Preparation of 6-aminocellulose-fatty acid salts with linoleic acid and different mass ratios

[0069] Weigh the following 6-aminocelluloses of different qualities according to the proportion, prepare them into an aqueous solution, add 1g of conjugated linoleic acid uniformly, and the compounding mass ratios are 1:1:, 2:1, 3:1, 4:1, 5:1, 6:1, stirring and reacting at 30°C for 5 hours in a reaction kettle to obtain an aqueous solution of 6-aminocellulose-fatty acid salt mixture, and the pH value of the solution was adjusted at 8-9. The product properties were determined as Image 6 , 7 shown.

[0070] from Image 6 , 7 We can see that with the increase of the amount of 6...

Embodiment 3

[0071] Example 3: Preparation of 6-aminocellulose with microcrystalline cellulose as biomass raw material (the degree of substitution by sulfonation is 1.41, and the degree of substitution by ammoniation is 0.36), and soybean oil is used as raw material to prepare conjugated aminocellulose by alkali isomerization Preparation of 6-aminocellulose-conjugated linoleate with oleic acid and different reaction temperatures

[0072] Weigh exactly 4g of 6-aminocellulose, prepare it into an aqueous solution, add 1g of conjugated linoleic acid, and the reaction temperature is 30°C, 40°C, 50°C, 60°C, 70°C, 80°C, 90°C, 100°C, React in the reactor for 4 hours to obtain an aqueous solution of 6-aminocellulose-conjugated linoleate mixture. The pH of the solution was adjusted to 8-9. The product properties were determined as Figure 8 , 9 shown.

[0073] from Figure 8 , 9 We can find that with the increase of reaction temperature, the surface tension and critical micelle concentration o...

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Abstract

The invention relates to a novel method for simply producing a novel green cleaning detergent in an aqueous solution system. Green detergent series products which are prepared from mixed fatty acid and quasi chitosan biomass amino compounds and have high surface activity are developed, surface tension of an aqueous solution is reduced to 28-29 mN/m, critical micelle concentration is 0.38-0.40 mg/ml, and the products are far better than sodium dodecyl sulfate and soap. According to the technology, biomass raw materials are widely sourced, the cost is low, and the prepared products are good in biological degradability, safe and environment-friendly.

Description

technical field [0001] The invention relates to the synthesis of a pseudochitosan fatty acid salt and the development of a green surfactant. Bio-based sulfuric acid monoester salt is generated by sulfonation process through biomass raw materials such as cellulose and starch, and then ammoniated to synthesize 6- Amino cellulose or 6-amino starch, and then salted with mixed fatty acids, can synthesize a green high-efficiency surfactant that is superior to the most commonly used surfactant raw material, sodium dodecylbenzene sulfonate. Background technique [0002] Surfactants have hydrophilic and lipophilic groups, which can be aligned on the surface of the solution, and refer to surface active substances that can significantly change the interface state of the solution when added in a small amount. One end of the molecular structure of the surfactant is a hydrophilic group, and the other end is a hydrophobic group; the hydrophilic group is often a polar group such as carboxyl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B15/06C08B5/14B01F17/16C09K23/16
CPCC08B5/14C08B15/06C09K23/16
Inventor 尹应武姚思强郑文斌任毅华吐松叶李艺
Owner XIAMEN UNIV
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