Graphene-modified starch multifunctional composite material and preparation method thereof

A technology of graphene modification and composite materials, which is applied in the field of starch material modification, can solve the problems of reducing costs and increasing the amount of addition, and achieves the goals of improving barrier properties, increasing thermal decomposition temperature, and increasing disintegration rate and disintegration speed. Effect

Inactive Publication Date: 2018-08-10
朱春英 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although people try to use starch or starch as filling to solve the cost problem, there are many papers and patents focusing on this aspect, but in summary, starch is still a surface modification to solve the interface compatibility problem, increase the amount of addition, in order to reduce the cost

Method used

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  • Graphene-modified starch multifunctional composite material and preparation method thereof
  • Graphene-modified starch multifunctional composite material and preparation method thereof
  • Graphene-modified starch multifunctional composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Described graphene modified starch multifunctional composite material is made of the following raw materials in parts by weight:

[0030]

[0031] The plasticizer is a mixture of purified water, sodium alginate, ethylene diformamide, glycerol and o-p-toluenesulfonamide, and the mixing mass ratio is 3:1:3:2:6.

[0032] The starch is corn starch, the particle size of the starch is 80 mesh, and the moisture content of the starch is 13%.

[0033] The graphene is a powder with a 3-layer benzene ring structure and a sheet diameter of 1000 nm.

[0034] The processing aid is a mixture of antioxidant, lubricant, surfactant and antibacterial agent, and the mixing mass ratio is 1:3:4:6. Antioxidant is 1010; lubricant is calcium stearate; surfactant is polyoxyethylene ether; antibacterial agent is nano silver ion.

[0035] The bio-based polymer material is PVA. The degree of polymerization of PVA is 300, the degree of alcoholysis is 80%, and the particle size of PVA powder is...

Embodiment 2

[0040] Described graphene modified starch multifunctional composite material is made of the following raw materials in parts by weight:

[0041]

[0042] Described plasticizer is the mixture of ethylene diformamide, glycerol, maltitol, chitosan, chitin and glyceryl monostearate, and the mixing mass ratio is 4:1:3:1:2: 2.

[0043] The starch is potato starch and tapioca starch, the mixing mass ratio is 3:2, the particle size of the starch is 85 mesh, and the moisture content of the starch is 11%.

[0044] The graphene is an oil agent with a 10-layer benzene ring structure and a sheet diameter of 900 nm.

[0045] The processing aid is a mixture of antioxidant, lubricant, surfactant and antibacterial agent, and the mixing mass ratio is 1:1:1:1. The antioxidant is 168; the lubricant is nano silicon dioxide; the surfactant is potassium laurate; the antibacterial agent is medical stone.

[0046] The bio-based polymer material is PVA. The degree of polymerization of PVA is 300...

Embodiment 3

[0051] Described graphene modified starch multifunctional composite material is made of the following raw materials in parts by weight:

[0052]

[0053] The plasticizer is a mixture of chitosan, chitin, citric acid ester and glyceryl monostearate, and the mixing mass ratio is 2:4:3:6.

[0054] The starch is sweet potato starch, the particle size of the starch is 85 mesh, and the moisture content of the starch is 10%.

[0055] The graphene is an aqueous liquid having a 5-layer benzene ring structure and a sheet diameter of 850 nm.

[0056] The processing aid is a mixture of antioxidant, lubricant, surfactant and antibacterial agent, and the mixing mass ratio is 1:3:2:1. The antioxidant is 300; the lubricant is oleic acid amide; the surfactant is a silane coupling agent; the antibacterial agent is a mixture of nano-silver ions, nano-titanium ions and medical stone, and the mixing mass ratio is 1:2:1.

[0057] The bio-based polymer material is PVA. The degree of polymeriza...

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Abstract

The invention relates to a graphene-modified starch multifunctional composite material and a preparation method thereof, and belongs to the technical field of starch material modification. The graphene-modified starch multifunctional composite material is prepared from the following raw materials of: in parts by weight, 10-80 parts of starch, 0.001-10 parts of graphene, 10-25 parts of plasticizers, 0.5-5 parts of a processing assistant, 80-10 parts of a bio-based polymer material and 0.1-5 parts of functional assistants, wherein the plasticizers are more than one selected from purified water,sodium alginate, ethylenebisformamide, glycerin, propylene glycol, ethylene glycol, polyethylene glycol, sorbitol, maltitol, chitosan, chitin, pentaerythritol, 1,4-butanediol and the like. The graphene-modified starch multifunctional composite material has complete biodegradability, and the invention provides the simple and easy preparation method, so that industrial production is facilitated.

Description

technical field [0001] The invention relates to a graphene-modified starch multifunctional composite material and a preparation method thereof, belonging to the technical field of starch material modification. Background technique [0002] Disposable convenience bags, shopping bags, mulch and other plastic products have seriously polluted the environment, and the quality of water and land has been severely damaged. It is the most harmful and harmful to the human body. First, because of its non-degradability, it will not degrade for decades or even hundreds of years. Second, it uses a large amount of aldehydes, phthalates, bisphenol modifiers and Plasticizers can directly contaminate food and cause human injury. [0003] Environmental protection issues have attracted widespread attention of mankind. In recent years, biodegradable materials such as PPC, PCL, PBS, PBAT, PLA, PVA, and TPS have been developed successively. At present, PLA, PBS and other products are better deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L3/02C08L5/04C08L5/08C08K13/04C08K7/00C08K3/04C08K5/20C08K5/053C08K5/435C08K5/103
CPCC08L3/02C08L29/04C08L2205/03C08L2205/035C08L2205/025C08L5/04C08K13/04C08K7/00C08K3/042C08K5/20C08K5/053C08K5/435C08L5/08C08K5/103
Inventor 朱春英张万虎高习芳
Owner 朱春英
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