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Preparation method for hydrophobic montmorillonite clay/isolated soy protein composite film

A technology of soybean protein isolate and Imon clay, which is applied in the field of composite material film, can solve the problems of poor practicability, unstable dispersion of soybean protein isolate, and inconspicuous synergistic effect of clay and soybean protein isolate components, etc. Compatibility and dispersibility, effect of improving surface hydrophobicity

Inactive Publication Date: 2017-09-01
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it was found in the actual use process that since the modifier used in the invention patent is any one of Dow Corning Z6173 or Dow Corning 11-100, the hydrophobic contact angle is 108°, and its main active group is an alkyl functional group, resulting in The synergistic effect between the modified clay and soybean protein isolate components is not obvious, resulting in unstable dispersion in soybean protein isolate and poor practicability

Method used

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  • Preparation method for hydrophobic montmorillonite clay/isolated soy protein composite film
  • Preparation method for hydrophobic montmorillonite clay/isolated soy protein composite film
  • Preparation method for hydrophobic montmorillonite clay/isolated soy protein composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Raw materials are prepared according to the following ratio: the parts mentioned below refer to parts by weight.

[0052]

[0053] (2) Dissolve the hydrophobic Imond clay in the distilled water and disperse it with 1200w ultrasonic wave for 20min;

[0054] (3) dissolving the soybean protein isolate in the dispersion solution obtained in step (2) and mechanically stirring for 10 min at a speed of 500 r / min;

[0055] (4) Add the glycerol into the mixed solution obtained in step (3) and carry out mechanical stirring for 10 min at a speed of 500 r / min;

[0056] (5) Adjust the pH value of the mixed solution obtained in step (4) to 9.2 with 10% sodium hydroxide solution, and perform mechanical stirring for 10 minutes at a speed of 500 r / min;

[0057] (6) Mechanically stirring the mixed solution obtained in step (5) in a water bath at 85° C. for 30 minutes at a speed of 500 r / min;

[0058] (7) After cooling the mixed solution obtained in step (6), pour it into a mold ...

Embodiment 2

[0061] (1) Prepare raw materials according to the following ratio:

[0062]

[0063] (2) Dissolving the hydrophobic Imond clay in the distilled water for 500w ultrasonic dispersion for 20min;

[0064] (3) dissolving the soybean protein isolate in the dispersion solution obtained in step (2) and mechanically stirring for 10 min at a speed of 400 r / min;

[0065] (4) Add the sorbitol into the mixed solution obtained in step (3) and carry out mechanical stirring for 10min at a speed of 400r / min;

[0066] (5) Adjust the pH value of the mixed solution obtained in step (4) to 9.4 with 10% aqueous sodium hydroxide solution, and perform mechanical stirring for 10 minutes at a speed of 400 r / min;

[0067] (6) The mixed solution obtained in step (5) was mechanically stirred and heated in a water bath at 80° C. for 30 minutes at a speed of 400 r / min;

[0068] (7) After cooling the mixed solution obtained in step (6), pour it into a mold and place it in a constant temperature and humi...

Embodiment 3

[0071] (1) Prepare raw materials according to the following ratio:

[0072]

[0073] (2) Dissolve the hydrophobic Imond clay in the distilled water and carry out 800w ultrasonic dispersion for 20min;

[0074] (3) dissolving the soybean protein isolate in the dispersion solution obtained in step (2) and mechanically stirring for 20 min at a speed of 300 r / min;

[0075] (4) Add the glycerol into the mixed solution obtained in step (3) and carry out mechanical stirring for 20min at a speed of 300r / min;

[0076] (5) Adjust the pH value of the mixed solution obtained in step (4) to 9.4 with 10% aqueous sodium hydroxide solution, and perform mechanical stirring for 20 minutes at a speed of 300 r / min;

[0077] (6) Heat the mixed solution obtained in step (5) in a water bath at 82° C. for 30 minutes at a speed of 300 r / min;

[0078] (7) After cooling the mixed solution obtained in step (6), pour it into a mold and place it in a constant temperature and humidity box to dry and for...

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Abstract

The invention discloses a preparation method for a hydrophobic montmorillonite clay / isolated soy protein composite film. The preparation method comprises the following steps: (1) carrying out modified treatment on natural montmorillonite clay to obtain the hydrophobic montmorillonite clay by a coupling agent; (2) blending the hydrophobic montmorillonite clay with the isolated soy protein, adding plasticizer, regulating the pH value of the mixture, and carrying out water-bath heating, stirring and cooling to obtain the hydrophobic montmorillonite clay / isolated soy protein composite film. According to the preparation method, a hydrophobic group can be simply and efficiently introduced into the montmorillonite clay, compatibility and dispersibility between the hydrophobic montmorillonite clay and the isolated soy protein are improved, mutual action force between the hydrophobic montmorillonite clay and the isolated soy protein is enhanced, and the surface hydrophobicity and the mechanical strength of the hydrophobic montmorillonite clay / isolated soy protein composite film can be improved.

Description

technical field [0001] The invention relates to the technical field of composite material films, in particular to a method for preparing a hydrophobic imonite clay / soybean protein isolate composite film. Background technique [0002] In recent years, with the aggravation of "white pollution" environmental problems and the lack of petroleum resources, degradable soybean protein isolate membranes have attracted more and more attention. Because soybean protein isolate molecules contain a large number of hydrophilic groups, their surface hydrophobicity is poor. In order to improve the surface hydrophobicity of soybean protein isolate membranes, many scientific research institutions have attempted to prepare soybean protein isolate / nano-clay composite films. [0003] Imon clay is a silicate clay with a layered structure and flaky crystals, which is mainly composed of silicon-oxygen tetrahedral sheets (silicon dioxide) and aluminum-oxygen octahedral sheets (alumina). Lots of hyd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L89/00C08K9/06C08K3/34C08K5/053
Inventor 秦志永莫柳婷张敏高伟魏鑫廖木荣朱琪琦
Owner GUANGXI UNIV
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