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Cellulose grafted epoxy vegetable fat anionic polymeric surfactant and preparation method thereof

A technology of cellulose grafting and surfactants, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of high equipment requirements and complicated processes, and achieve simple preparation processes, simple processes, and mild synthesis conditions Effect

Active Publication Date: 2015-04-29
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned method of utilizing cellulose and its derivatives to synthesize surfactants has complex processes and high equipment requirements

Method used

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  • Cellulose grafted epoxy vegetable fat anionic polymeric surfactant and preparation method thereof
  • Cellulose grafted epoxy vegetable fat anionic polymeric surfactant and preparation method thereof
  • Cellulose grafted epoxy vegetable fat anionic polymeric surfactant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Weigh 3g of hydroxyethyl cellulose, fully dissolve it in 50mL of DMSO solvent and pour it into a 100mL three-neck flask. Add 10g of epoxidized soybean oil with an epoxy value of 6.3%, heat it to 40°C with magnetic stirring, and slowly drop a mixed solution of 0.02g of tin tetrachloride and 2mL of DMSO solvent through a constant pressure funnel for 5 minutes and react for 2 hours. After removing the DMSO solvent, the cellulose grafted epoxy soybean oil product was obtained. Weigh 1 g of the above product into a 100 mL three-neck flask, add 20 mL of 1 mol / L NaOH aqueous solution, and stir at a temperature of 90° C. to fully hydrolyze for 12 h. Cool down to room temperature, filter the reaction mixture, wash the solid product obtained after distilling the filtrate with ethyl acetate, and remove glycerin and unhydrolyzed oil. The solid obtained after washing is redispersed in distilled water and the pH value is adjusted to 4-6 with dilute hydrochloric acid solution, and th...

Embodiment 2

[0044] Weigh 2g of carboxymethyl cellulose, fully dissolve it in 40mL of DMF solvent and pour it into a 100mL three-neck flask. Add 10g of epoxy castor oil with an epoxy value of 4.3%, heat it to 50°C with magnetic stirring, and slowly add a mixture of 0.10g of zinc dichloride and 4mL of DMF solvent through a constant pressure funnel for 8 minutes and react for 1 hour. After removing the DMF solvent, the cellulose grafted epoxy castor oil product was obtained. Weigh 1 g of the above product into a 100 mL three-neck flask, add 30 mL of 0.5 mol / L NaOH aqueous solution, and stir at a temperature of 70° C. to fully hydrolyze for 22 h. Cool down to room temperature, filter the reaction mixture, wash the solid product obtained after distilling the filtrate with ethyl acetate, and remove glycerin and unhydrolyzed oil. The solid obtained after washing is redispersed in distilled water and the pH value is adjusted to 4-6 with dilute sulfuric acid solution, and the floating oil layer i...

Embodiment 3

[0047] Weigh 2g of hydroxypropyl cellulose, fully dissolve it in 45mL of DMSO solvent and pour it into a 100mL three-neck flask. Add 6g of epoxidized olive oil with an epoxy value of 3.3%, and heat to 60°C with magnetic stirring. Slowly add a mixed solution of 0.04g of trifluoroacetic acid and 2mL of DMSO solvent through a constant pressure funnel for 2 minutes and react for 1.5 hours. The cellulose-grafted epoxy olive oil product was obtained after removing the DMSO solvent. Weigh 1 g of the above product into a 100 mL three-neck flask, add 28 mL of 0.8 mol / L LiOH aqueous solution, and stir at a temperature of 80° C. to fully hydrolyze for 18 h. Cool down to room temperature, filter the reaction mixture, wash the solid product obtained after distilling the filtrate with ethyl acetate, and remove glycerin and unhydrolyzed oil. The solid obtained after washing is redispersed in distilled water and the pH value is adjusted to 4-6 with dilute phosphoric acid solution, and the fl...

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Abstract

The invention discloses a preparation method of a cellulose grafted epoxy vegetable fat anionic polymeric surfactant. The preparation method comprises the following sequentially-connected steps: fully dissolving a cellulose material in a solvent, stirring, heating to 30-70 DEG C, adding epoxy vegetable fat, dropwise adding an initiator solution, reacting for 1-2 h under the condition of heat preservation, and removing the solvent, so that a cellulose grafted epoxy vegetable fat product is obtained; hydrolyzing the cellulose grafted epoxy vegetable fat product under the action of a catalyst, and purifying the obtained object, so that a cellulose grafted epoxy vegetable fatty acid is obtained; and dispersing the cellulose grafted epoxy vegetable fatty acid in water, adjusting the pH value to 7-11, and carrying out distillated dehydration on the obtained product, so that the cellulose grafted epoxy vegetable fat anionic polymeric surfactant is obtained. The preparation method is wide in raw material sources and low in price, the prepared surfactant is biodegradable, mild in synthetic conditions and simple in preparation process, has less pollution to the environment, and accords with the concept of sustainable development.

Description

technical field [0001] The invention belongs to the field of material synthesis, and in particular relates to a cellulose-grafted epoxy vegetable oil anionic polymer surfactant and a preparation method thereof. Background technique [0002] Cellulose is the most abundant renewable resource on the earth. Using cellulose and its derivatives as raw materials to develop non-toxic, non-polluting and environmentally friendly polymer surfactants can not only solve the current energy crisis in the petroleum industry, but also provide The rational utilization of cellulose opens up new avenues. Cellulosic polymer surfactants have both hydrophilic and hydrophobic segments in their molecules. Like small molecule surfactants in water, they can form a micelle structure with the hydrophobic segment as the core and the hydrophilic segment as the outer core. However, the higher molecular weight makes it exhibit many characteristics different from low molecular surfactants. The solubilizati...

Claims

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Application Information

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IPC IPC(8): C08B15/00C08G81/00C09K8/584
Inventor 刘鹤黄旭娟王爱婷商士斌宋杰
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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