Natural Eucommia ulmoides gum (EUG) emulsion

A technology of eucommia gum and emulsion, which is applied in the field of emulsification of natural eucommia gum, which can solve the problems of destroying the regularity of molecular chains, the inability of original gum to maintain excellent performance, and destroying the crystal structure, so as to increase the scope of use, improve the machining performance, and inhibit crystallization effect

Inactive Publication Date: 2019-11-08
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] If the vulcanization method destroys the regularity of the molecular chain, thereby destroying the crystalline structure, the method of obtaining the vulcanized rubber of Eucommia gum in an elastomeric state requires a different masticating formula than the traditional formula, making it impossible to blend with other rubbers and perform secondary modification, etc. reaction
Modification of rubber by epoxidation, chlorination, hydrogenation and other methods to introduce reactive groups into the main chain can effectively destroy the crystallinity of the original rubber, but it also changes some of its own characteristics, making the original rubber unable to maintain its excellent performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Using the above-mentioned reaction method, 25 g of natural eucommia gum crude gum was dissolved in 250 ml of cyclohexane to prepare a eucommia gum solution with a mass concentration of 8%. Take 40ml of deionized water, dissolve 0.03g of stabilizer sodium dodecyl sulfonate, 0.12g of co-emulsifier Tween, and 5.5g of emulsifier APE-10 in order to form an aqueous solution, and add the aqueous solution to the above Eucommia gum solution , use ammonia water to adjust the solution to PH = 10, use an emulsifier to perform high-speed shear emulsification at 10000r / min, the emulsification time is 10min, and the temperature cannot exceed 45°C until the solution becomes a uniformly dispersed and stable emulsion. 0.05-0.06 atmospheric pressure, carry out vacuum distillation at 45-50° C. to remove the organic solvent, add 0.01 g of stabilizer sodium dodecylsulfonate, and mix well to prepare the natural Eucommia gum emulsion.

Embodiment 2

[0030] Using the above-mentioned reaction method, 21 g of natural eucommia gum crude gum was dissolved in 250 ml of n-hexane to form a 6% eucommia gum solution. Take 40ml of deionized water, successively dissolve 0.03g of stabilizer sodium dodecyl sulfonate, 0.12g of co-emulsifier Tween, and 5.5g of emulsifier APE-10 into water to form an aqueous solution, and add the aqueous solution to the above Eucommia gum solution , use ammonia water to adjust the solution to PH = 10, use an emulsifier to perform high-speed shear emulsification at 10000r / min, the emulsification time is 10min, and the temperature cannot exceed 45°C until the solution becomes a uniformly dispersed and stable emulsion. 0.05-0.06 atmospheric pressure, carry out vacuum distillation at 45-50° C. to remove the organic solvent, add 0.01 g of stabilizer sodium dodecylsulfonate, and mix well to prepare the natural Eucommia gum emulsion.

Embodiment 3

[0032]Adopt above-mentioned reaction method, get natural eucommia gum coarse glue 17g and dissolve in 250ml benzene and be made into the eucommia gum solution that mass concentration is 4%. Take 40ml of deionized water, successively dissolve 0.03g of stabilizer sodium dodecyl sulfonate, 0.12g of co-emulsifier Tween, and 5.5g of emulsifier APE-10 into water to form an aqueous solution, and add the aqueous solution to the above Eucommia gum solution , use ammonia water to adjust the solution to PH = 10, use an emulsifier to perform high-speed shear emulsification at 10000r / min, the emulsification time is 10min, and the temperature cannot exceed 45°C until the solution becomes a uniformly dispersed and stable emulsion. 0.05-0.06 atmospheric pressure, carry out vacuum distillation at 45-50° C. to remove the organic solvent, add 0.01 g of stabilizer sodium dodecylsulfonate, and mix well to prepare the natural Eucommia gum emulsion.

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Abstract

The invention discloses a natural EUG emulsion. A preparation method for the natural EUG emulsion comprises the following steps: dissolving crude EUG in an organic solvent A to prepare a gutta-perchasolution with a mass percentage of 3-8%, then adding an aqueous solution formed by successively dissolving a stabilizer B, a co-emulsifier C and an emulsifier D, adding an alkali E to adjust the pH value of the formed solution to 9-11, and carrying out emulsification at a normal temperature by using a high-speed emulsifying machine until the color of the solution becomes milky white; and subjecting the prepared EUG emulsion to reduced-pressure distillation at a pressure of 0.05-0.06 atmosphere and a temperature of 50-55 DEG C to remove the organic solvent, then adding the stabilizer B accounting for 0.5-2.0% of dry EUG, and carrying out uniform mixing to prepare the stable natural EUG emulsion. According to the invention, the physical method of emulsification is employed to wrap EUG molecules and to disperse the EUG molecules in the aqueous solution without destroying the overall structure of the EUG molecules; that is, the original properties of the EUG are retained, the crystallization of the EUG is effectively inhibited, the elasticity of the EUG is increased, and the machining performance of the EUG is enhanced.

Description

technical field [0001] The invention relates to emulsification of natural eucommia gum and specific preparation of natural eucommia gum emulsion. Background technique [0002] Eucommia ulmoides Oliv (Eucommia ulmoides Oliv) belongs to the angiosperm phylum, the Hamamelis subclass of the dicotyledonous plant class, and the only tree in the order Eucommia ulmoides. The leaves, bark, root bark and pericarp of the plant are rich in a white filamentous or fine light yellow granule Eucommia ulmoides gum (EUG). The unique properties and the importance of practical application of Eucommia gum have long been recognized by the world. The application value and potential functional properties of pure natural biological materials have infinite charm, and the development prospect is very broad. [0003] At present, natural rubber resources are scarce on a global scale. In addition to expanding the planting area of ​​Hevea trilobata and increasing the yield per unit area in the world, see...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/00C08L7/02
CPCC08J3/00C08J2307/02
Inventor 郭妤赵询齐昊刘座文陈美达
Owner GUIZHOU UNIV
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