How to Identify Biodegradable Trash Bags?

In recent times, there has been a significant increase in public awareness about the environment, leading to a higher demand for biodegradable trash bags. However, this surge in demand has also resulted in the market being flooded with countless counterfeit biodegradable trash bags, causing confusion among consumers. As a reputable manufacturer of biodegradable trash bags, Biomagic aims to guide the public on how to differentiate between genuine and fake biodegradable trash bags.

Ⅰ. Examine the materials used in biodegradable trash bags Currently, wholesale biodegradable trash bags are primarily made from PBAT, PLA, bio-based HDPE, and LEPE, whereas regular plastic bags are typically composed of polystyrene, polyethylene, and polyvinyl chloride. Therefore, the materials used are the key factors that clearly distinguish these two types of bags.

Ⅱ. Verify the expiry date indicated on the outer packaging of degradable waste bags When it comes to the presence of an expiration date on the external packaging of degradable waste bags, regular plastic bags do not have a designated expiry date and can be used at any time. However, degradable waste bags are different in this regard, as their expiration dates can range from six months to a year, depending on the specific materials used. It is worth noting that these two distinctions can be identified through the purchase of plastic bags that come with external packaging instructions. In cases where such instructions are absent, alternative methods should be employed for identification purposes.

Ⅲ. Assess the scent of degradable waste bags Numerous suppliers of environmentally-friendly products offer biodegradable waste bags made from plant-derived starch. These bags often emit a subtle fragrance, resembling that of corn or cassava. If you detect such a fragrance, you can be confident that the bags are indeed biodegradable. On the other hand, if the scent differs from the aforementioned description, then they are simply regular plastic bags.

IV. Ensure the appropriate use of chemical reagents for degradable garbage bags Dichloromethane can be utilized for its dissolution. Degradable garbage bags undergo complete dissolution, while regular plastic bags do not dissolve.

Bio garbage bags are indispensable items in our everyday lives. Biomagic has dedicated years to the development of environmentally friendly biodegradable corn starch and PLA garbage bags, offering customers a wide range of sizes and categories of eco-friendly biodegradable bags. Currently, our degradable garbage bags have been exported to over 50 countries and regions. If you have any specific requirements, please don’t hesitate to contact us online!

Research on toughening modification of polylactic acid material (PLA)

Research on toughening modification of polylactic acid material (PLA)

Polylactic acid (PLA) is a thermoplastic aliphatic polyester that can be extracted from corn, potato or starch materials. And can be completely degraded into carbon dioxide and water under certain soil and compost conditions without causing environmental pollution. PLA has excellent biocompatibility, biodegradability, thermal properties and mechanical properties. And is widely used in disposable tableware, food packaging and biomedical devices. However, PLA has poor toughness, which limits its wide application.
Currently, there are two common methods to improve the toughness of PLA:

(1) Graft flexible molecular chains into PLA as block or graft copolymers to improve the ductility of the PLA matrix.
(2) Physical blending method. Blend PLA with materials such as elastomers, inorganic fillers or plasticizers to improve the toughness of PLA. The physical modification method is simple and convenient, and has become the most commonly used modification method in industrial production.

  1. Blended with elastomer
    Blending PLA with elastomers is an effective way to toughen PLA. When impacted by an external force. The elastomer will produce streaks or shear bands, which can absorb the energy from the outside and improve the impact strength of the material. But this method will reduce the strength and modulus of PLA. Therefore, researchers focus on developing high-performance elastomers. Blending elastomers with PLA can improve toughness without reducing strength and modulus.

Xi Lifeng and others used discrete metallocene catalysis technology to develop propylene-based elastomers (PBE) and toughened and modified PLA to obtain high-toughness PLA/PBE melt-blown nonwoven materials. The results show that as the PBE content increases. the stress of PLA/PBE melt-blown nonwoven materials increases. And the elongation at break increases accordingly. When the PBE addition amount is 20%. The elongation at break and tensile strength of PLA/PBE melt-blown nonwoven materials increase by 455% and 25% respectively. The filtration efficiency increases by about 1.1 times, and the filtration performance of the material is enhanced.

Researchers use the superior thermoplasticity and high elasticity of elastomers to toughen PLA so that the blends exhibit excellent toughness. However, as the toughener content increases, the tensile strength and modulus of PLA blends are affected. In addition, currently commonly used elastomers are all petroleum-based. and their extensive use causes serious pollution to the environment and affects the degradation performance of PLA. Therefore, the development of bio-based/degradable elastomers is a research hotspot for elastomer-toughened PLA.

  1. Blended with flexible polymers

2.1 Flexible biodegradable polymers
In order to maintain the biodegradability and compostability of PLA, polycaprolactone (PCL), starch, polybutylene adipate-terephthalate (PBAT). And polybutylene succinate (PBS) are usually used Toughened PLA with biodegradable polymers such as polyhydroxyalkanoate (PHA) to prepare a variety of biodegradable polymers.
The addition of flexible biopolyester causes the tensile strength of PLA to drop from 57MPa to about 20MPa.
Some biodegradable polymers have poor compatibility with PLA, and compatibilizers usually need to be added for adjustment. Wu Haojie et al. melt-blended PLA, PBAT and a compatibilizer containing glycidyl methacrylate (GMA) functional groups to study the toughening effect of the PBAT content on the blended system. Research shows that when 20% PBAT and 6% compatibilizer are added. The elongation at break of the PLA/PBAT blend increases from 8.9% of pure PLA to 80.7%. It shows that under the action of compatibilizer. The blend of PLA and PBAT has good toughness and biodegradability, which broadens the application scope of PLA.

2.2 Non-biodegradable polymers
In addition to blending with flexible bio-based polymers, non-degradable polymers can also be added to achieve a toughening effect. Such as polyethylene, polypropylene, aromatic polyester, polysiloxane, polyformaldehyde, etc.
The addition of flexible polymer materials can improve the toughness of PLA materials. Especially flexible biodegradable polymers, and also solve the problem of non-degradable blend systems. However, most flexible polymers and PLA are incompatible or partially compatible during the blending process. Resulting in low mechanical strength of the system and insignificant toughening effect. Therefore, it is necessary to add compatibilizers. Nucleating agents or inorganic nanoparticles to improve the interfacial compatibility between the two and improve the performance of the material.

  1. Blended with inorganic materials
    PLA can be toughened by blending with elastomers and flexible polymers. But this will reduce the material’s rigidity and heat resistance. Inorganic nanoparticles have a special structure and excellent properties. Which can significantly improve the toughness, rigidity and heat resistance of polymers, and can also reduce costs. However, the higher surface area of nanoparticles can easily lead to aggregation, thereby reducing some other properties of the material.

Studies have shown that the elongation at break of composite materials first decreases and then increases with the addition of fGO. Indicating that the flexible molecular chain TDI-BD has a greater contribution to improving the toughness of composite materials. Therefore, fGO has excellent toughening and strengthening composite effects and can be used to toughen and modify PLA.

Some scholars used aluminate coupling agent (ACA) to modify calcium carbonate (CaCO3) and filled the modified PLA with aluminate calcium carbonate (AlCaCO3). The results showed that the addition of Al-CaCO3 improved the toughness of the material. The elongation at break and impact strength of the blend are increased by up to 350% and 150%, maintaining good comprehensive mechanical properties. The addition of AlCaCO3 also improves the degradation performance of the system. When the Al-CaCO3 content is greater than 30%, the blend can be completely degraded within 3 days.

The inorganic filler forms a certain physical cross-link with PLA, which can reinforce, toughen and improve the rigidity of the system. It also has certain thermal stability. However, the poor adhesion and dispersion between the filler and the matrix is a difficulty that needs to be solved.

  1. Add plasticizer

Plasticization modification refers to mixing a certain amount of high boiling point, low volatility and non-toxic plasticizer into PLA to weaken the force between PLA molecular chains, reduce the rigidity of PLA molecular chains, and enhance the mobility of PLA chain segments. However, plasticizers may leak out during use, affecting the performance of PLA. Commonly used plasticizers include low molecular polymers such as citrate esters, polyethylene glycol, glyceryl butyrate and glycerin. Citrate ester plasticizer is an important environmentally friendly plasticizer, and the commonly used ones are acetyl tributyl citrate (ATBC) and tributyl citrate (TBC).

Plasticizers can weaken the forces between PLA molecules, thereby improving the material’s flexibility and processability. However, there are still problems with plasticizers: when a certain amount of plasticizer is added, the plasticizing effect will be more obvious, but the compatibility with PLA is poor. As the plasticizer content increases, the tensile strength of PLA decreases and the modulus decreases; the boiling point of the plasticizer is low, and volatilization occurs during processing; the cost of the plasticizer is high, which limits its practical use. Therefore, bio-based plasticizers with low cost, stable performance and good compatibility are the future development direction.

5 Conclusion

Some results have been achieved in the physical blending and toughening modification of PLA, which has broadened the market prospects of PLA in high-toughness applications. However, most of the traditional modification methods can only improve the single property of PLA toughness, and rarely can take into account both the mechanical properties and degradation properties of PLA. Therefore, the focus of future research is to develop low-cost toughening modifiers with excellent comprehensive properties, green and environmental protection, so that PLA can meet more application fields.

Do you know the significance of using biodegradable plastics?

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Do you know the significance of using biodegradable plastics?

Plastic is a major invention of the 20th century, and it is also one of the common chemical products. We can see it in every aspect of life: express packaging, takeaway boxes, supermarket shopping bags, plastic bottles, etc.

Plastic can replace many materials, and is convenient to use, store and transport, which has promoted the rapid development of express delivery, takeaway and other industries. However, plastic bags will not degrade for hundreds of years and have a great impact on the environment. White pollution has become a world-recognized environmental problem.

According to statistics from the Plastics Committee of the China Plastics Association, our country uses about 3 billion plastic bags every day, which means that each of us is responsible for the pollution of 2-3 plastic bags per day. But at the moment, we’ve reached a point where we’re very dependent on plastic.
In order to get rid of this predicament, our country has already started to act. Published recommendations on plastic pollution control, which mentioned that non-degradable plastic bags should be banned in various places and activities. This is a policy that people look forward to! A small step for China to reduce plastic, a big step for the world to reduce plastic!

The “Opinions on Further Strengthening Plastic Pollution Control” (hereinafter referred to as the Plastic Restriction Order) issued in January 2020 prohibits or restricts the production and sales of products including disposable plastic shopping bags and tableware, and sets an exit time.
The rapid elimination of a large number of disposable non-degradable plastic products has led to a rapid increase in the production capacity of substitutes in a short period of time. Among them, biodegradable plastic bags are a good example and the focus of everyone’s attention.

As the main raw materials of biodegradable plastic bags, PLA and PBAT, a professor predicted that by 2025, the annual production capacity of these two major biodegradable plastics in China will increase from about 100,000 tons and 300,000 tons in 2020 to 1 million. tons and more than 7 million tons, reaching more than half of the global production capacity.
The development of biodegradable plastics has been slow in the early stage. The main reason is that the production cost is high and the promotion is not enough. However, with the ban on the import of foreign garbage in China since 2018, the industry trend has changed significantly.

In the past, a large amount of plastic waste from overseas developed countries was exported to China and other regions, which actually solved the huge external costs at a small cash cost; while China has borne additional external costs, and the burden has become heavier and heavier.
In order to solve the serious waste problem, China has banned the disposable plastic using. European countries have also introduced various policies to address the plastic problem, and the country has become more and more strict, so biodegradation The plastic industry has entered an explosive period, and polylactic acid (PLA) and PBAT are promising materials among them, opening up a new field of environmentally friendly plastics in China.

In the future, starting from the innovation of Chinese standards, biodegradable plastics will integrate the hard-core technologies of international standards, national standards, group standards, and enterprise standards to achieve petrochemical material innovation, non-ji material substitution, and bio-based and biodegradable plastics. In addition, thousands of sails are competing to replace plastic step by step, solve white pollution, and benefit mankind.

The Costa Rican government has recently signed a “Plastic Ban Order”

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The Costa Rican government has recently signed a “Plastic Ban Order”. which prohibits businesses from selling and distributing plastic bags for free.and completely bans plastic straws. It will officially implemented one year later.

The content of the bill mainly includes: requiring supermarkets and other commercial institutions to provide handbags with a recycled plastic content of not less than 50% or biodegradable plastics; requiring disposable plastic bottle importers, manufacturers and distributors to produce or sell bags containing a certain proportion of recycled resin Plastic bottles, establish a waste recycling mechanism; prohibit all national institutions in Costa Rica from purchasing single-use plastic products such as tableware and food containers.

The Costa Rican government actively promotes interdepartmental cooperation and carries out incentive activities to increase the enthusiasm of the public to actively participate in plastic pollution control. For example, the Ministry of Health and some enterprises jointly launched the “Eco-Coin” program to encourage people to sort and recycle waste. People can open a personal “eco-coin” electronic account, and after sorting out recyclables and sending them to designated recycling points, they can get a virtual currency – “eco-coin”. When purchasing products from companies participating in the plan, people can use “eco-coins” to deduct or obtain corresponding discounts. At present, this activity has supported by some other countries in Latin America, and Panama, Peru, Colombia, Argentina and other countries have also joined the plan.

Costa Rica has also strengthened cooperation with neighboring countries and international organizations to tackle plastic pollution. Aiming at the problem of marine litter pollution, Costa Rica and seven neighboring countries jointly formulated an action plan and took corresponding actions through intergovernmental cooperation. Last year, the Costa Rican government and the United Nations Development Program jointly launched the “Plastic-Free Landscape Plan”, striving to remove 200,000 tons of non-recyclable plastics that have not properly disposed of and turn them into building materials. The plan will set up recycling devices in the four most plastic-polluted rivers in Costa Rica to speed up the collection of plastic waste.

The Costa Rican government actively promotes interdepartmental cooperation and carries out incentive activities to increase the enthusiasm of the public to actively participate in plastic pollution control. For example, the Ministry of Health and some enterprises jointly launched the “Eco-Coin” program to encourage people to sort and recycle waste. People can open a personal “eco-coin” electronic account, and after sorting out recyclables and sending them to designated recycling points, they can get a virtual currency – “eco-coin”. When purchasing products from companies participating in the plan, people can use “eco-coins” to deduct or obtain corresponding discounts. At present, this activity has supported by some other countries in Latin America, and Panama, Peru, Colombia, Argentina and other countries have also joined the plan.

Costa Rica has also strengthened cooperation with neighboring countries and international organizations to tackle plastic pollution. Aiming at the problem of marine litter pollution, Costa Rica and seven neighboring countries, jointly formulated an action plan and took corresponding actions, through intergovernmental cooperation. Last year, the Costa Rican government and the United Nations Development Program jointly launched the “Plastic-Free Landscape Plan”, striving to remove 200,000 tons of non-recyclable plastics that have not properly disposed of and turn them into building materials. The plan will set up recycling devices, in the four most plastic-polluted rivers in Costa Rica to speed up the collection of plastic waste.

A United Nations committee meeting in Paris

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A United Nations committee meeting in Paris on Monday to work on a landmark treaty to end global plastic pollution has yet to agree on an outcome.

The Intergovernmental Negotiating Committee on Plastics tasked with developing the first legally binding international treaty on plastic pollution, including the marine environment. It is the second of five meetings to conclude negotiations by the end of 2024.

At the first meeting in Uruguay six months ago, some countries called for a global mandate, some for national solutions and others for both.

With so little time to negotiate the treaty, experts say it will be crucial at the second session to make decisions about the treaty’s goals and scope — such as which plastics it will focus on. But that’s easier said than done. More than 2,000 participants, including governments and observers, from nearly 200 countries attended the meeting at UNESCO, the UN’s cultural agency in Paris.

A fundamental issue considered Monday is the system of voting on each country’s decisions, which has caused heated debate and delays at the plenary session scheduled to end Friday.

Humans produce more than 430 million tons of plastic a year, the United Nations Environment Program said in April, two-thirds of which short-lived products that could quickly turn into waste, fill oceans and Often enters the human food chain. Global plastic waste generation will nearly triple by 2060, with about half ending up in landfill and less than a fifth recycled, according to the Organization for Economic Co-operation and Development.

The treaty could focus on human health and the environment, as the self-described “ambitious coalition” led by Norway and Rwanda wants, by limiting plastic production and restricting some chemicals used in plastic. The coalition committed to a legally binding international instrument to end plastic pollution by 2040. It said this was necessary to protect human health and the environment, while helping restore biodiversity and curb climate change.

Or, as some plastic-producing countries and oil and gas exporters hope, the treaty could be more limited in its scope to tackle plastic waste and expand recycling. Most plastics made from fossil fuels. Countries backing the plan include the United States, Saudi Arabia and China. The U.S. mission to Uruguay said the national plan would allow governments to prioritize the most important sources and types of plastic pollution. Many plastics and chemical companies also want to adopt this approach and have created treaties to prioritize recycling plastic waste.

The International Council of Chemical Societies, the World Plastics Council, the American Chemistry Council and others that make, use and recycle plastic say they want a deal that will end plastic pollution while “preserving the societal benefits of plastic”. They call themselves a “global partner in the plastic cycle”. They say modern plastic materials being used around the world to make essential and often life-saving products, many of which are critical to a low-carbon, more sustainable future.

The Truth About Recyclable Packaging

For over 50 times, the petroleum assiduity has told consumers that their plastics will be reclaimed. Recyclable packaging is frequently touted as the most sustainable option. The verity is the vast maturity of our recycling isn’t actually reclaimed.

It’s supposed to work like this We put our recyclables into the caddy, they ’re hauled down to MRFs( Accoutrements Recovery installations) where they’re gutted and sorted. The accoutrements are melted down and remade into new products. Unfortunately most recyclable accoutrements do not make it through this process.

As consumers come more knowledgeable about sustainability, they refuse to share in this recycling ruse created by petroleum companies.

How important of Recycling Actually Gets Reclaimed?
91 of all plastic ever produced is going to tips , or being incinerated. Because plastic takes so long to degrade, this means utmost of the plastic waste ever produced still exists. It’s buried in tips , filling our abysses, and littering our earth.

“ For further than half a century, the plastics assiduity has engaged in an aggressive crusade to deceive the public, immortalizing a myth that recycling can break the plastics extremity, ”
— California Attorney General Rob Bonta

State accuses Exxon Mobil of deceiving public, immortalizing ‘ myth ’ of plastics recovering– LA Times

Activists have been sounding the alarm for times. In September 2020, NPR journalist Laura Sullivan released a ruinous composition reporting on the problems with plastic recycling. Is Plastic Recycling a taradiddle?( And the accompanying audio Waste Land– featured on NPR’s Earth plutocrat.)

The short interpretation? Yes, plastic recycling is a taradiddle .

As far back as the 1970’s, companies with a vested interest in producing plastics have pushed the blame for plastic pollution onto consumers and the general public, to avoid taking responsibility themselves.

The Keep America Beautiful juggernauts told us to stop littering(The Crying Indian announcement that wisecracked the Environmental Movement). The juggernauts of the 90s told us to cut plastic 6- pack rings to insure they do n’t kill wildlife. While we ’re dutifully picking up our trash and snipping plastic rings we ’re not questioning why the plastic was indeed there in the first place.

Clever marketing and PR can make us feel as though we’re making good opinions. We’re doing our part sorting our recycling, cutting plastic rings, and refusing straws. It’s now so hardwired into our collaborative culture that we ’re smirching others who do n’t abide by these social morals.


Only a miniscule quantum of this plastic is actually being reclaimed, meanwhile periodic global plastic product has increased nearly200-fold since 1950- up to 381 million tonnes in 2015.

It’s clear that the only thing recyclable plastic packaging achieves is more plastic.

pots invested in plastics have always known that recycling was noway a feasible result. They ’d rather spend plutocrat on abstracting us than coming up with a better result. We need to hold them responsible, and we need a different waste system.

When Recycling is n’t Worth it
drawing and sorting recyclable accoutrements is precious. With the low prices of virgin raw accoutrements , reclaiming them costs further than making new. It’s delicate to make a business case for using inferior recycled accoutrements when new accoutrements bring significantly lower.

To break the problem of expenditure, we began to transport our recycling abroad in 2001. China was willing to buy it from us, and the process was fairly effective China transferred us goods via boat, and we transferred our recycling back to them on the return trip. They would also sort it themselves and reclaim it into new products.

It sounded like a great result, until 2018 when China decided that it was no longer economically feasible for them to buy our waste- they had plenitude of their own. Operation National Sword began to place bans on the significances of foreign recyclables, and suddenly we came face to face with a mess of our own timber.

America( and Europe) were now stuck. What could we do with all of this plastic waste? Original governments began investing further plutocrat in MRFs. Despite this, and numerous other enterprise, recycling remains more precious and less precious than creating new plastic.

What Can Reclaimed Accoutrements be Used For?
Not all accoutrements can be effectively reclaimed, indeed if the recycling system worked as intended. utmost accoutrements can not be infinitely reclaimed- they come lower in quality each time. Plastics can only be reclaimed a limited number of times before they come unworkable and we ’re right back where we started- plastic waste.

That’s if they can indeed be reclaimed at all. Recycling symbols indicate that a material can be reclaimed if transferred to the correct installation. When we see a reclaim symbol we presume that we can put the product in our reclaim lockers, but that isn’t always the case.

frequently we’re anticipated to shoot waste to technical installations ourselves, or return them to the manufacturer. Indeed worse- Some of these recovering installations simply don’t live.



Reduce, Exercise, Compost.
We are n’t saying that all is lost, quite the contrary!

Now that we know that we’ve been prevaricated to, we can stop wasting time and plutocrat. We can use the information we’ve to work on better waste operation results. As businesses we can make better packaging choices. We can press original governments and pots into perfecting waste operation, access, and structure.

Where Does My Waste Go- Composting and the Circular Economy

Plastics are important for numerous operations, and they’re good at what they do Plastic is durable, cheap, leakproof, protean, and featherlight. Unfortunately, those are all the same reasons that it’s bad for the terrain.

There are numerous cases where we’re using plastics that we simply don’t need, particularly in packaging. Packaging makes up around 30 of totalU.S. tip waste- meaning that our waste systems are heavily affected by packaging trends.

Why ChooseEco-Friendly Packaging

One of the most importanteco-friendly packaging results has always been to reduce. Where we ca n’t reduce further, we can take a tip from nature


Compostable Packaging
Quite simply There’s no reason at all that packaging should stick around after it has served its purpose.

In nature everything has a use. Indeed fruit peel( natures packaging!) decomposes once it has served its purpose- returning nutrients to the soil as it does so.

Recycling has been proven again and again to simply not work. Composting uses the natural corruption process to dispose of waste. It does n’t contaminate near communities like tips do, it provides jobs, and reduces food waste. Composting is a process that has been known for centuries, and is proven to work. So why are n’t we all doing it?

Structure flexible Communities Through Composting

The main struggle with mainstream composting is a lack of investment, access, and mindfulness. Despite this, composting has seen significant growth, and continues to grow. Rather of original government investment in MRFs, that plutocrat would be better spent on adding composting structure and access.

While particular responsibility always remains important, we need to hold pots and the government responsible.

Compostable packaging can prop the growth of composting structure. By working with composters and compost lawyers we ’re creating a product to fit a waste result that formerly exists!

By erecting real, tested, end- of- life results into our packaging design we can significantly reduce waste, end tips , and achieve a indirect frugality.