Starch-based degradable environment-friendly plastic and preparation method thereof

Abstract

The invention discloses starch-based degradable environment-friendly plastic and a preparation method thereof, and the starch-based degradable environment-friendly plastic is prepared from the following raw materials in parts by weight: 1.2-1.5 parts of polylactic resin, 0.5-0.7 part of polyvinyl chloride, 0.3-0.4 part of a plasticizer, 0.2-0.4 part of plant fibers, 0.6-0.8 part of guar gum, 0.3-0.6 part of a lubricant, 0.5-0.6 part of a coupling agent, 0.1-0.3 part of plant starch, 0.4-0.6 part of a plasticizer and 0.2-0.5 parts of a stabilizer, wherein the polyvinyl chloride is prepared by adopting a suspension polymerization method, one or more of a suspension stabilizer, gelatin, polyvinyl alcohol, methyl cellulose and hydroxyethyl cellulose are added during preparation, preferably, 0.5 g of a sample needs to be taken and dissolved in 80mL of water after the guar gum is prepared, and the solution must be kept in a flowing state, so that gel cannot be formed, 8 mL of a hydrochloricacid solution is added, and one drop of the sample mixed solution is dropwise added to the turmeric test paper to show brown red. The whole process is safe, non-toxic and environment-friendly, the obtained plastic is high in tensile strength and has high practical value and good application prospects, and the problem of environmental pollution is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of plastics, and in particular relates to a starch-based degradable environment-friendly plastic and a preparation method thereof. Background technique [0002] Degradable plastics refer to a class of plastics whose products can meet the requirements of use in terms of performance, remain unchanged during the storage period, and can be degraded into environmentally harmless substances under natural environmental conditions after use. Therefore, also known as environmentally degradable plastics, there are a variety of new types of plastics: photodegradable plastics, biodegradable plastics, light, oxidative biodegradable plastics, carbon dioxide-based biodegradable plastics, thermoplastic starch resin degradable plastics. [0003] The use of a large number of plastics has brought a large amount of solid waste, seriously polluting the living environment of human beings, and becoming a worldwide public hazard. A...

AI Technical Summary

Problems solved by technology

[0003] The use of a large number of plastics has brought a large amount of solid waste, seriously polluting the living environment of human beings, and becoming a worldwide public hazard. At present, the most commonly used methods for dealing with plastic waste are landfill, incineration, and recycling of waste plastics. These methods have certain problems. If waste plastics are buried, it is difficult to degrade. They will not rot and degrade after being buried underground for hundreds of years. If incineration is adopted, secondary pollutants will be produced, such as hydrogen chloride, dioxin and other toxic gases. , the products obtained by recycling plastics for reprocessing are difficult to reach the state of initial use. Therefore, research and development of new degradable plastics has become an important way to control environmental problems