Are environmentally friendly materials degradable under certain conditions?

Eco-friendly materials. It is true that it can be degraded under certain conditions, but it is a little easier to degrade than those things that are not environmentally friendly.

Currently domestic.

Household waste disposal.

is not good, mainly landfill and incineration, there is classified treatment, but the classification is not good enough, and needs to be improved.

If. Biodegradable materials.

It is landfilled with non-degradable materials.

Then the degradable material can still be melted, but it may affect the resolution rate.

However, environmental protection in China is not good enough, there is not enough publicity, there is not enough supervision, and the quality of the people is not enough. And the shoes you wear are not necessarily eco-friendly, they may just be a gimmick on the part of the dealer.

In fact, many of the environmentally friendly products produced by merchants are a means of publicity. How long can you imagine how long you can wear a pair of shoes?He won't degrade automatically for 6 to 10 years.

But you can't wear shoes for that long. So this environmental protection is just confusing people, and at the same time it is also a means to increase profit margins. There are very few that actually use eco-friendly materials.

The general disposal method of our regular household waste is landfill. It used to be incinerated, but it caused air pollution, and later it was landfilled. In the past few years, it was found that landfills would cause soil pollution, which would cause subsequent pollution (such as groundwater and surface water pollution) and should also affect people's lives.

However, the problem is still not completely solved. It is still a subject that is being studied.

Although not all environmentally friendly products are environmentally friendly, it also gives us a very important reminder that environmental protection has slowly taken root in the hearts of the people, isn't it?If you have bought a new eco-friendly product, it means that you think it is imperative to be eco-friendly. The merchant's propaganda conflicts with your Ministry of Environmental Protection.

We just need to do our own environmental protection and start from our side. You can't say that I can be eco-friendly just by buying eco-friendly products, can I?It's not a concept.

For example, although you buy environmentally friendly products, but then throw away the packaging, that is not in line with your original intention of environmental protection?Right!Regarding whether the environmentally friendly products advertised by the merchants are environmentally friendly, this is actually a moral issue for the merchants.

You can't just kill an eco-friendly product just because of that, can you? Otherwise, aren't you just the superficial pursuit of "environmental protection" this fashion packaging!

If you are a fixed deposit of a rural credit cooperative, the rural credit cooperatives in the county (city) can deposit and redeem all the deposits, but once you cross the bank or go out of the county (city), you cannot redeem it.

Biodegradation refers to the decomposition of polymer materials into low-molecular compounds by organisms in the natural environment. There is no universal definition of what constitutes biodegradable. The European Union considers that materials that can be degraded into water, carbon dioxide and organic matter within 6 months can be called biodegradable materials, while the Federal ** Commission of the United States believes that a material can be labeled as "biodegradable" if it is degraded into substances found in nature in a reasonable period of time when exposed to air, humidity, bacteria or other organisms.

However, biodegradable materials on the market may not all meet these requirements, and those that take hundreds of years to degrade, or degrade into toxic substances, may also be regarded as biodegradable materials.

Biodegradation produces substances that are not necessarily non-toxic and harmless. For example, the well-known pesticide DDT can be biodegraded into DDD and DDE, but both are more toxic than DDT. In landfills, biodegradation in the absence of oxygen produces toxic methane.

Therefore, environmentally friendly biodegradable materials should mean that their degradation products are non-toxic and can be recycled in nature.

Even biodegradable materials require certain conditions for the skin to be degraded, such as sunlight, oxygen, moisture and microorganisms. However, products made of biodegradable materials are discarded, buried in landfills, and isolated from the outside world, but do not necessarily have these biodegradable conditions. Researchers at the University of Arizona in the United States have found 25-year-old hot dogs, corn cobs and grapes in landfills, and old newspapers buried 50 years ago that can still be read, all of which are biodegradable.

Injecting oxygen, water and microorganisms into landfills can promote biodegradation, but the cost is too high to scale. Therefore, it may not be feasible to try to rely on the use of megadegradable biodegradable materials to solve the problem of garbage accumulation. It's even more important to reduce, reuse and **waste.

Degradable materials include biodegradable materials and photodegradable materials.

Biodegradable plastics synthesized by microorganisms, referred to as bioplastics, including biopolyesters, biocellulose, polysaccharides and polyamino acids, are a class of plastics that can be completely degraded by microorganisms in nature. Such as polylactic acid (PLA), starch plastics, etc. It should be noted that the vast majority of starch plastics currently produced in China are filled starch plastics, that is, a certain proportion of starch is added to non-biodegradable polymer materials, and the physical properties of the entire material collapse through the biodegradation of starch, which promotes the exposure of a large number of end groups to oxidative degradation, but the PE and PVC in the remaining parts after this "collapse" are impossible to degrade and remain in the soil.

Photodegradable plastics refer to plastics that can be degraded under the action of light. Such as ethylene carbon monoxide copolymer (E CO), vinyl vinyl ketone copolymer (ecolyte) and so on.

Summary. Degradable plastic is made of plant straw and other items that are friendly to the human body and the environment, different from the three synthetic plastics, after discarding, under the action of the biological environment, it can be decomposed by itself, which is harmless to people and the environment, and belongs to green packaging. Degradable plastic bags are a kind of disposable shopping bags that are "degradable and easily degradable".

Degradable plastic is made of plant straw and other items that are friendly to the human body and the environment, different from the three synthetic plastics, after being discarded, under the action of the biological environment, it can be decomposed by itself, which is harmless to people and the environment, and belongs to green packaging. Degradable plastic bags are a kind of disposable shopping bags that are "degradable and easily degradable". Feast.

The degradation time of plastic is determined by the composition of the plastic, the current plastic is divided into degradable plastic and non-degradable plastic, for the non-degradable explanation period is relatively long, the time is a few years, and for degradable plastics, especially starch-based degradable plastics, its degradation speed is very fast, and the substances generated after degradation are completely split and available, degradable plastic bags are "degradable, easy to degrade" a kind of disposable shopping bag. Biodegradable plastic bags from raw materials and decomposed.