Chemical Plastic

July 8, 2010

Shocking! White Trash Threaten Earth’s Oceans

Plastics have been around for, perhaps less than 100 years. So in the short span, there hasn’t been a group of microorganisms who have evolved who are capable of biodegrading plastics.

Scripps Institution of Oceanography in San Diego USA had taken a investigation and found that the area of Pacific Plastic Garbage Patch that lies between California and Hawaii is double of that of Texas.

Researchers said: “Unfortunately, there are a lot of plastic in oceans, Just one year, the Japan Coast will gather approx.150,000 tons of plastic debris”.  In a sense, you are placing all these plastics in the ocean, and eventually they will reach the deep ocean environment.

The increasing quantity of plastic now known to be in the oceans, plastic lasts a long time there, because cold sea water slows down the chemical reactions that cause a plastic bottle lying on a beach, for example, to break down.

It seemed that it is not the most terrible thing that the plastic gathered in oceans, there is a new study found that plastic decomposition will cause more pollution. Plastics in ocean biodegrade slowly and the biodegradation of plastic occured in ocean will cause bigger damages.

“Plastic maybe biodegraded at an alarming rate under the action of rain, sun and other environmental factors,” said the researchers. At the same time, they will may also release toxins contained bisphenol A to the oceans, bisphenol A are be deemed to has effect on disrupting hormonal function of animals, and act on animal’s reproductive system.

But if you define biodegradation as the complete conversion of plastics into carbon dioxide and water, all the plastics that we ever put into the ocean – which is over the past 50 to 60 years – would still be there in the ocean. And we keep adding more and more to it. And we do not know what the ecological consequences of this are. They might be very serious.

Earth’s oceans are absorbing carbon dioxide from the atmosphere, making the oceans more acidic. This could pose a threat to ocean life.

Around the world there are signs that plastic pollution is becoming a serious pollution and is threatening and destructing the environment, more terrifying it has begun to filtrated into the whole food chain of the earth gradually.

To  protect our common homeland, there is a lot of things we need to do!

June 8, 2010

Fungi Take a Bite out of Bisphenol A (BPA)

Preface: Environmental protection is a permanent topic, we all know plastic is very useful in our daily life, but it is not good for plastic being a permanent material, take it easy, now with help of fungi, the most stubborn plastic will disappeared obediently forever. Scientists chose three kinds of fungi and used them to clean the environment, now they are trying to improve conditions of decomposition of polycarbonate by fungi, that is a really a good news for people who are dealing with persistent pollutants with great effort.

Bisphenol A. Also called BPA, it’s used to make shatter-proof plastic known as polycarbonate, found in everything from water bottles to medical devices to the lining of food packaging. As much as 2.7 million tons of plastics are manufactured each year with BPA. But it’s also an endocrine disruptor posing a threat to fetuses and young children. And it’s been linked to cancer and metabolic disorders leading to obesity.

So how can plastics be properly disposed of to avoid releasing BPA into the environment? Some fungus may help. So say researchers publishing in the journal Biomacromolecules.
The scientists selected three fungi that are already used for environmental cleanup. They wanted to optimize conditions for the fungi to break down polycarbonate, so first they treated the plastic with ultraviolet light and heat. Untreated polycarbonate served as a control.

After 12 months, the untreated plastic hadn’t decomposed at all. But the fungi had munched through the treated plastic and used it all as an energy source. Even better, the BPA had been entirely broken down as well. Tests of the sample found no BPA residue. That’s good news in the effort to mop up a persistant pollutant.

April 7, 2010

Release Agent – Classification and Properties

Release agent can be divided into high polymer class, such as polysiloxane, organic fluorine polymers, and inorganic or organic class.

and chlorine-free halothane class, water-based release agents is in the trend.
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The most general and usual release agent is methyl silicone oil used with performance as follows:

Colorless, odorless and transparent viscous liquid, with different molecular weight, the dynamic viscosity differs from 1 to 104 Pa • s, it is soluble in benzene, toluene, xylene, ethyl ether, etc., the refractive index is 1.38 ~ 1.40, density 0.82 ~ 0.97 g / cubic centimeter, thermal conductivity coefficient of 0.00028 ~ 0.00044 W / (m • 1 000), boiling point 152 ~ 250 ?, flash point 110-600 ?. So different viscosity has different nature.
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Methyl silicone oil often used in high-temperature mold release of large-scale injection molded parts.

As to inorganic release agents, there are talc, mica, molybdenum disulfide, white clay, clay and so on, mixed with other assistant additives into release agent, and used in rubber industry generally.
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As to organic release agents there are fatty acid soap (sodium soap, zinc soap, etc.), fatty acid, paraffin, white oil, vaseline, etc., essentially they can be considered as of inner lubricant or outer lubricant of plastic

In addition to methyl silicone oil, high polymer release agent also includes low molecular weight polyethylene, which is also a type of lubricant and dispersant, polyethylene glycol, epoxy derivatives, fluorine compounds.

March 25, 2009

Nestle improves the plastic bottle manufacturing

Filed under: Plastic Market News — Tags: — Administrator @ 5:39 am

Nestle has a number of beverage brands, in order to conform to the trend of green catering, but also in order to save some of the costs, the company decided to re-design of plastic water bottles, the use of thinner bottle so as to reduce the use of plastic.

Nestle’s new bottle is 15% lighter than old bottle, weight decreased from 14.5 grams to 12.4 grams. So, Nestle saved more than 2,900 million kg of polyester raw materials each year.

Dicalcium Phosphate, Monopotassium Phosphate

Don’t re-use printing plastic bags

Filed under: Chemical Plastic Research — Tags: , — Administrator @ 3:49 am

In daily lives, housewives repeated use of plastic bags is nothing new. However, some experts pointed out that people should paid more attention on repeated use of plastic food packaging bag, especially the plastic bags with printing. Because they could make adverse effects on the human body.

The printing plastic bags must have lead. A lot of people enjoy the repeated use of plastic bags or placing the food in the plastic bag, which makes food contact lead directly.

The use of vinegar, one type of weak acid can filter out 0.1 mg of lead from the slice of bread size of the printing plastic bags, which is twice a day the amount of lead intake. The lead content is not sufficient to cause a clear threat to human health, but there is the potential adverse effects on the human body.

Shandong plastic import growth rebounded

Filed under: Plastic Imp. & Exp. — Tags: — Administrator @ 3:30 am

Shandong Foreign Trade and Economic Cooperation Office’s statistics show that in February, imports of the coal, refined oil, iron ore 292,000 tons, 670,000 tons and 6,850,000 tons, are up year-round average, year-on-year growth of 247%, 130% and 10.6%. In addition, plastic raw material imports 120,000 tons, a record single month since last year the highest import volume, an increase of 123%.

DSM India engineering plastics plant formally put into operation

Royal DSM announced India engineering plastics plant formally put into operation. This new investment project highlights the DSM’s long-term strategy at the world’s largest and fastest-growing economies regional.

The plant is located in Ranjangaon MIDC Industrial Park whic is 60 kilometers away from Pune, covers an area of 25 acres. The new plant will enable the Indian Akulon ® PA6, Arnite ® PBT and PET and Stanyl ® PA46 production capacity to expand to three times. This is also the biggest polyamide and polyester mixed Factory in India. The engineering plastic production may be used in the production of automobiles, electronic appliances, consumer goods, molding products for industrial use.

Royal DSM N.V. creates innovative products and services in Life Sciences and Materials Sciences that contribute to the quality of life. DSM’s products and services are used globally in a wide range of markets and applications, supporting a healthier, more sustainable and more enjoyable way of life. End markets include human and animal nutrition and health, personal care, pharmaceuticals, automotive, coatings and paint, electrical and electronics, life protection and housing. DSM has annual net sales of EUR 9.3 billion and employs some 23,500 people worldwide. The company is headquartered in the Netherlands, with locations on five continents. DSM is listed on Euronext Amsterdam.

Polymer plastic used for new type of solar cells

Filed under: Chemical Plastic Research — Tags: — Administrator @ 3:12 am

University of Chicago researchers said, they synthesized a new polymer plastic materials may enhance the performance of solar cells at low-cost.

A professional said that the key of this technology is to improve the photoelectric conversion rate. In the past, the similar materials’ photoelectric conversion rate are 5% to 6%, and while the new material photoelectric conversion rates have increased to 8%, and also expected to improve in the future.

According to introduction, this patent has been bought by a solar power company form California.

Compared to traditional silicon solar cells, the polymer plastic solar cells have a low cost, easy to manufacture, so has the prospect of a much broader market.

March 18, 2009

Plastic bottle yacht

Filed under: Plastic Market News — Tags: — Administrator @ 3:42 am

plastic_bottle_yacht

In California, an United States expedition team studys on the environmental and ecological is building a special environmental protection yacht.

The yacht is about 18 meters long, the hull is made by 12,000 recycling plastic bottles.

After the completion of the ship, the expedition team will ship from San Francisco to Sydney. The whole journey is about 18,000 kilometers

Biodegradable plastics became popular

Filed under: Plastic Market News — Tags: , — Administrator @ 3:16 am

biodegradable_plastics

Well-known American consulting firm Frost & Sullivan recently released North America Biodegradable Packaging Market Analysis Report. As people attach importance to environmental protection and health, bio-degradable plastics in the packaging area of growing demand, manufacturers will also be resulting in new capacity. Expected over the next few years, the demand for biodegradable packaging materials will continue to grow.

Biodegradable Materials be able to break down rely on the role of micro-organisms, it is used for the packaging materials can significantly reduce the volume of trash. Because of a good fresh-keeping effect, about 41% of biodegradable packaging being used for food preservation.

Since 1990, the global production of biodegradable plastics increased rapidly, about 60% biodegradable plastics were used in packaging industry.

Expected by 2011, biodegradable plastic packaging production will reach 116,000 tons, with an average annual growth rate of 22%.

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