Degradable plastic bag for reducing red tide, and manufacturing method thereof

Abstract

The invention provides a degradable plastic bag for reducing red tide, and a preparation method thereof. The plastic bag comprises, by weight, 40-50 parts of modified polyvinyl alcohol, 20-25 parts ofmodified starch, 20-25 parts of waste plant fibers, 20-30 parts of a nano-porous polystyrene adsorbent, 10-20 parts of polyethyleneimine, 8-12 parts of polyacrylamide, 10-15 parts of polyaluminum chloride, 5-10 parts of nano-microencapsulated sulfurized bacteria, 0.5-1 part of 1,2-dibromoethane and 2-3 parts of glycine. The plastic bag produced from the components of the plastic bag through the manufacturing method can adsorb heavy metal ions and organic chemical substances in water or the natural environment in the gradual degradation process, and also achieves the dual technical effects ofadsorbing seaweeds, bacteria, nitrogen and phosphorus elements and other factors causing the red tide and further promoting the degradation of the plastic bag.

Description

technical field [0001] The invention belongs to the field of plastics, in particular to a degradable plastic bag for reducing red tides and a manufacturing method thereof. Background technique [0002] Due to the rapid progress of polymer material technology, plastic bags have become polymer material products widely used by modern urban people. However, due to the composition of plastic bags, plastic bags are not easy to degrade in soil or water, forming "white garbage". In the water body, it will also lead to the death of fish, birds and amphibians that rely on plants and animals in the water body to eat plastic bags by mistake, and even if they are degraded, various organic toxic residues will remain in the water body, which is harmful to the water body. Harmful to the animals and plants in it. [0003] At the same time, red tides are easily caused by various factors in water bodies. Internationally, red tides are called "harmful algal blooms". When they occur, they often...

AI Technical Summary

Problems solved by technology

Paralytic shellfish toxin is extremely toxic, and there is no effective detoxification method. Once a person eats shellfish containing this toxin, it will cause neuromuscular paralysis of the human body. In mild cases, numbness and tingling of the lips and muscle paralysis of the limbs will occur. Symptoms, severe cases can lead to respiratory muscle paralysis and even death

[0005] Chinese patent 201611150729.2 discloses a degradable plastic bag. Although the plastic bag made of this kind of ingredients is non-toxic and naturally degrades, it can protect the safety of fish and the environment from pollution. It replaces traditional plastic bags and solves the problem of non-degradable, The problem of polluting water bodies and the environment, but it only guarantees the self-degradable performance of plastic bags, and cannot reduce the pollution of heavy metal ions, organic pollutants, trace organic pollutants, and excessive concentrations of nitrogen and phosphorus compounds in water, and plastic bags The degradation is slow, and the degraded organic pollution poisons will cause secondary pollution to the water body

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