Degradable environment-friendly straw and preparation method thereof

An environment-friendly straw technology, applied in the direction of coating, etc., can solve the problems of environmental and marine ecological pollution, disposable plastic straws are difficult to degrade, etc., and achieve high biodegradability, prevent gel hardening, and good antibacterial effect

Active Publication Date: 2020-11-03
施竣元
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, in view of the above content, the present invention provides a degradable and environment-friendly straw and its preparation method, which solves the problem that the prior art disposable plastic straws are difficult to degrade and easily cause environmental and marine ecological pollution.

Method used

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  • Degradable environment-friendly straw and preparation method thereof
  • Degradable environment-friendly straw and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] A degradable and environment-friendly straw, comprising the following components in parts by weight: 2 parts of sodium alginate, 0.5 parts of pectin, 0.5 parts of Wenlun gum, 8 parts of modified starch, 5 parts of fructose, 0.5 parts of tea polyphenols, 0.4 part of chitosan oligosaccharide, 0.2 part of calcium gluconate, 0.5 part of tartaric acid, 0.01 part of brilliant blue, 50 parts of deionized water. The preparation method of the modified starch is as follows: dissolving wheat starch in sodium hydroxide solution, the quality of which is 1.5 times that of ordinary starch, then adding propylene oxide, stirring and reacting at 55°C for 3 hours, then adding Maleic anhydride, stirred and reacted for 1 hour, washed, suction filtered, and dried to obtain modified starch, wherein the mass ratio of ordinary starch, propylene oxide, and maleic anhydride is 10:1.8:1.2.

[0028] A preparation method of a degradable environment-friendly straw, comprising the steps of:

[0029] ...

Embodiment 2

[0035] A degradable and environment-friendly straw, comprising the following components in parts by weight: 5 parts of sodium alginate, 3 parts of pectin, 1.2 parts of Wenlun gum, 20 parts of modified starch, 8 parts of sorbitol, and 1 part of tea polyphenol 0.8 parts, 0.8 parts of chitosan oligosaccharide, 0.6 parts of calcium gluconate, 1.2 parts of tartaric acid, 0.2 parts of lemon yellow, 75 parts of deionized water. The preparation method of the modified starch is as follows: dissolving potato starch in sodium hydroxide solution whose quality is three times that of ordinary starch, then adding propylene oxide, stirring and reacting at 60°C for 4 hours, then adding Maleic anhydride, stirred and reacted for 1.5h, washed, suction filtered, and dried to obtain modified starch, wherein the mass ratio of ordinary starch, propylene oxide, and maleic anhydride was 11:2.4:1.8.

[0036] A preparation method of a degradable environment-friendly straw, comprising the steps of:

[00...

Embodiment 3

[0043] A degradable and environment-friendly straw, comprising the following components in parts by weight: 8 parts of sodium alginate, 5 parts of pectin, 2 parts of Wenlun gum, 30 parts of modified starch, 10 parts of glycerin, 1.5 parts of tea polyphenols, 1.2 parts of chitosan oligosaccharide, 1 part of calcium gluconate, 2 parts of tartaric acid, 0.5 part of mastia, 100 parts of deionized water. The preparation method of the modified starch is as follows: dissolving sweet potato starch in sodium hydroxide solution, the quality of which is 5 times that of ordinary starch, then adding propylene oxide, stirring and reacting at 65°C for 5 hours, and then adding Maleic anhydride, stirred and reacted for 2 hours, washed, suction filtered, and dried to obtain modified starch, wherein the mass ratio of ordinary starch, propylene oxide, and maleic anhydride was 12:3:2.4.

[0044] A preparation method of a degradable environment-friendly straw, comprising the steps of:

[0045] (1)...

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Abstract

The invention relates to the technical field of straws, and provides a degradable environment-friendly straw and a preparation method thereof, the degradable environment-friendly straw comprises the following components by weight: 2-8 parts of sodium alginate, 0.5-5 parts of pectin, 0.5-2 parts of welan gum, 8-30 parts of modified starch, 5-10 parts of a plasticizer, 0.5-1.5 parts of tea polyphenol, 0.4-1.2 parts of chitosan oligosaccharide, 0.2-1 part of calcium gluconate, 0.5-2 part of tartaric acid and 50-100 parts of deionized water. The straw is safe and sanitary, free of toxic and side effects, environmentally friendly, edible, easy to degrade, suitable for wide application and popularization and capable of replacing a disposable plastic straw; therefore, the problems that in the prior art, a disposable plastic straw is difficult to degrade, and environmental and marine ecological pollution is prone to being caused are solved.

Description

technical field [0001] The invention relates to the technical field of straws, in particular to a degradable and environment-friendly straw and a preparation method thereof. Background technique [0002] Straws are commonly used auxiliary tools for drinking various beverages in our daily life. From the perspective of materials, straws can be divided into plastic, stainless steel, paper, silicone rubber, etc., but disposable plastic straws have advantages in portability, safety, cost, etc. It has significant advantages in many aspects, so it is currently the most widely used straw product in the world. However, disposable plastic straws have the following hazards: (1) The main components of plastic straws are polyethylene and polypropylene. It contains toxic substances that may cause cancer. When used, the toxic and harmful substances are dissolved in the drink, which is harmful to health; (2) Plastic straws are stable and not easy to degrade. Discarding them in nature will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/04C08L5/04C08L5/06C08L5/08C08K5/092C08K5/00C08K5/098B29C41/14
CPCC08L3/04B29C41/003B29C41/14C08L2201/06C08L2205/035C08L2205/02C08L2203/18C08L5/04C08L5/06C08L5/08C08K5/0058C08K5/092C08K5/00C08K5/098
Inventor 施竣元
Owner 施竣元
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