Nanometer composite materials with soya protein and montmorillonite, its production and use

A nano-composite material and soybean protein technology, which is applied in the fields of polymer materials and environmental science, can solve the problems of reducing tensile strength and water resistance, and achieve the effects of improving tensile strength, low production cost and high technology content.

Inactive Publication Date: 2006-08-16
WUHAN UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of plasticizer alleviates the shortcomings of soybean protein and greatly reduces the tensile strength and water resistance of its material

Method used

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  • Nanometer composite materials with soya protein and montmorillonite, its production and use

Examples

Experimental program
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Effect test

Embodiment 1

[0011] Embodiment 1: Disperse montmorillonite and soybean protein in water respectively, the concentration of montmorillonite aqueous solution is 2wt%, and the concentration of soybean protein aqueous solution is 5wt%. Then the two solutions were mixed for solution intercalation, the mass of montmorillonite: the mass of soybean protein was 8:92, the reaction temperature was 25°C, and the reaction time was 2h. The viscous yellow solid obtained by centrifugation was washed with acetone and dried to obtain the soybean protein / montmorillonite nanocomposite. Glycerin and soybean protein / montmorillonite nanocomposites were mixed according to the glycerol / soybean protein mass ratio of 3:7 through a single-screw extruder. Extruder screw speed: 100rpm, three-stage temperature setting of the single-screw extruder from the feed inlet to the extrusion die: 80, 100 and 120°C. Finally, the montmorillonite-modified soybean protein plastic sheet was obtained by hot pressing at 140° C. and 20...

Embodiment 2

[0012] Example 2: Disperse montmorillonite and soybean protein in water respectively, the concentration of the montmorillonite aqueous solution is 3 wt%, and the concentration of the soybean protein aqueous solution is 4 wt%. Then the two solutions were mixed for solution intercalation, the mass of montmorillonite: the mass of soybean protein was 16:84, the reaction temperature was 60° C., and the time was 4 hours. The viscous yellow solid obtained by centrifugation was washed with acetone and dried to obtain the soybean protein / montmorillonite nanocomposite. Glycerin and soybean protein / montmorillonite nanocomposites were mixed according to the glycerol / soybean protein mass ratio of 3:7 through a single-screw extruder. The screw speed of the extruder: 60rpm, the three-stage temperature setting of the single-screw extruder from the feed inlet to the extrusion die: 90, 110 and 140°C. Finally, the montmorillonite-modified soybean protein plastic sheet was obtained by hot pressi...

Embodiment 3

[0013] Embodiment 3: Disperse montmorillonite and soybean protein in water respectively, the concentration of montmorillonite aqueous solution is 4wt%, and the concentration of soybean protein aqueous solution is 3wt%. Then the two solutions were mixed for solution intercalation, the mass of montmorillonite: the mass of soybean protein was 20:80, the reaction temperature was 60° C., and the time was 4 hours. The viscous yellow solid obtained by centrifugation was washed with acetone and dried to obtain the soybean protein / montmorillonite nanocomposite. Glycerin and soybean protein / montmorillonite nanocomposites were mixed according to the glycerin / soybean protein mass ratio of 4:6 through a single-screw extruder. Extruder screw speed: 30rpm, three-stage temperature setting of the single-screw extruder from the feed inlet to the extrusion die: 90, 110 and 140°C. Finally, the montmorillonite-modified soybean protein plastic sheet was obtained by hot pressing at 140° C. and 20 M...

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Abstract

A soy protein/montmorillonite nanometer composite material, its production and use are disclosed. The material consists of montmorillonite 1~24wt% and soy protein 76~99wt%. The process is carried out by dispersing montmorillonite and soy protein in water proportionally, agitating the two soliquoids while blending, drying to obtain soy protein/montmorillonite nanometer composite, adding into glycerine, mixing by extruder and hot pressing to obtain plastic sheet material. It is simple, has excellent mechanical, thermal, ultraviolet absorbing performances and no environmental pollution. It can be used for optical selectivity and biological degradable material.

Description

technical field [0001] The invention relates to a biodegradable modified soybean protein material—soybean protein / montmorillonite nanocomposite material and its preparation method and application, which belong to the field of polymer materials and also belong to the field of environmental science and technology. Background technique [0002] Montmorillonite is a layered silicate that can improve the mechanical properties and thermal stability of materials, and has been widely used as a reinforcing filler in the field of polymer materials. Montmorillonite can be dispersed into the polymer matrix in the form of intercalation and exfoliation by solution intercalation, melt intercalation and in-situ polymerization intercalation (Ray, S.S.; Okamoto, M.; Prog. Polym. Sci., 2003, 28, 1539-1641.). The montmorillonite used in polymer nanocomposites usually needs to be modified with organic intercalation agents before being composited with polymers, which means that a large amount of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L89/00C08K3/34
Inventor 张俐娜陈谱
Owner WUHAN UNIV
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