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Preparation method of hemicellulose and gelatin composite biofilm

A technology of hemicellulose and biofilm, applied in the field of film performance, can solve the problems of low mechanical strength, moisture resistance, weak moisture resistance, etc., and achieve the effect of improving mechanical strength

Inactive Publication Date: 2015-12-30
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also aspects that urgently need to be improved in the field of collagen membranes, such as low mechanical strength, weak moisture resistance, and weak moisture resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A preparation method of hemicellulose and gelatin composite biofilm, the operation steps are as follows:

[0015] 1. Set the total mass of the mixed solution to 50g, add gelatin to 6% of the total mass of the mixed solution, and carrageenan to 0.2% of the total mass of the mixed solution. After the two are mixed evenly, add glycerin, and add the mass of glycerin to the mixed solution 0.8% of the total mass; a mixed solution was obtained, and the mixed solution was shaken in a water bath at 70° C. for 30 minutes. Sonicate for 20 min to remove air bubbles in the solution.

[0016] 2. Take 28g of the solution prepared in step 1, spread it evenly on the plastic plate, place it in a 35°C oven, and take out the prepared composite biofilm after 24 hours.

[0017] 3. Take the composite biofilm prepared in step 2, and measure the tensile strength and elongation at break of the composite biofilm. Measurement results: the tensile strength of the composite biofilm is 32.2MPa, and...

Embodiment 2

[0019] A preparation method of hemicellulose and gelatin composite biofilm, the operation steps are as follows:

[0020] 1. Set the total mass of the mixed solution to 50g, add gelatin to 6% of the total mass of the mixed solution, and carrageenan to 0.6% of the total mass of the mixed solution. After the two are mixed evenly, add glycerin and hemicellulose: The mass of glycerin is 1.2% of the total mass of the mixed solution, and the mass of hemicellulose is 0.6% of the total mass of the mixed solution; the mixed solution is obtained, and the mixed solution is shaken in a 70° C. water bath for 30 minutes. Sonicate for 20 min to remove air bubbles in the solution.

[0021] 2. Same as Step 2 of Example 1:

[0022] 3. Take the composite biofilm prepared in step 2, and measure the tensile strength and elongation at break of the composite biofilm. Measurement results: the tensile strength of the composite biofilm was 46.0 MPa, and the variation range of the elongation at break w...

Embodiment 3

[0024] A preparation method of hemicellulose and gelatin composite biofilm, the operation steps are as follows:

[0025] 1. Set the total mass of the mixed solution to 50g, add gelatin to 6% of the total mass of the mixed solution, and carrageenan to 1.0% of the total mass of the mixed solution. After the two are mixed evenly, add glycerin and hemicellulose: add glycerin The mass is 1.6% of the total mass of the mixed solution, and the mass of hemicellulose is 1.2% of the total mass of the mixed solution; the mixed solution is obtained, and the mixed solution is shaken in a 70° C. water bath for 30 minutes. Sonicate for 20 min to remove air bubbles in the solution.

[0026] 2. Same as Step 2 of Example 1:

[0027] 3. Take the composite biofilm prepared in step 2, and measure the tensile strength and elongation at break of the composite biofilm. Measurement results: tensile strength and elongation at break. The tensile strength of the composite biofilm was 53.9MPa, and the e...

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Abstract

The invention discloses a preparation method of a hemicellulose and gelatin composite biofilm. According to the method, gelatin, carrageenan, glycerin and hemicellulose are selected as raw materials, the total mass of a mixed solution is set to be 50 g, the gelatin accounting for 6% of the total mass of the mixed solution and the carrageenan accounting for 0.2%-1.0% of the total mass of the mixed solution are added, and the materials are mixed uniformly; then the glycerin accounting for 0.8%-1.6% of the total mass of the mixed solution and the hemicellulose accounting for 0-1.2% of the total mass of the mixed solution are added, the mixture is oscillated in a water bath at 70 DEG C for 30 min, bubbles in the solution are removed through ultrasonic treatment, the film is prepared from 28 g of the prepared solution, and the tensile strength and the elongation at break of the composite biofilm are measured. Compared with the prior art, the preparation method of the hemicellulose and gelatin composite biofilm has the benefits as follows: the hemicellulose component is added to the gelatin, so that the mechanical strength of the composite film is improved obviously, and industrial application of the film is better facilitated.

Description

technical field [0001] The invention relates to the field of film properties, in particular to a preparation method of hemicellulose and gelatin composite biofilm. Background technique [0002] Gelatin is the main product of collagen after mild and irreversible fracture. The material prepared as the main raw material is safe and non-toxic after hydrolysis in the body, has good hydrophilicity, and is easily absorbed by the body. Gelatin can form a film, and has the excellent characteristics of non-toxic, non-polluting, and degradable. As the concept of green chemical industry is deeply rooted in the hearts of the people, the unique advantages of natural polymer materials such as collagen will be more and more popular, and its application prospects in the food, cosmetics and biomedical industries are very broad. However, there are also aspects that urgently need to be improved in the field of collagen membranes, such as low mechanical strength, weak moisture resistance and mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L89/00C08L5/14C08L5/00C08K5/053
Inventor 姚双全覃程荣聂双喜袁月王双飞宋雪萍
Owner GUANGXI UNIV