What is polyethylene (with pictures) gas bloating diarrhea

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Polyethylene is a type of polymer that is thermoplastic, meaning that it can be melted to a liquid and remolded as it returns to a solid state. It is chemically synthesized from ethylene, a compound that’s usually made from kite electricity generation petroleum or natural gas. Other non-official names for this compound include polythene or polyethylyne; and it is also abbreviated as PE. It is used in making other plastic compounds much often than it’s used in its pure form. Though it has a wide variety of uses, it can be harmful to humans and to the environment. Production and Uses

Of all the plastics produced for industrial and commercial products, polyethylene is the most common. As an example, 280 million metric tonnes of it was produced in 2011 alone. Over five times as much PE is manufactured each year than a closely-related compound, polypropylene (PP). The largest use for these polymers is in packaging materials, like films and foam; and for bottles and other containers that can be used in food, medical, and other consumer industries.

The characteristics of a plastic can be adjusted by combining it with various plasticizers, which are substances added to plastics to make them more durable, flexible, and transparent. Adding gas after eating chromium/silica makes high-density polyethylene (HDPE), which is used to create sturdy products like garbage containers. Combining it with organic olefin compounds makes a type of low-density PE (LDPE electricity 4th grade worksheet) that is used for plastic grocery or shopping bags. Other common forms of polyethylene are ultra high molecular weight PE (UHMWPE), which is used in bullet-proof vests and knee joint replacements; and medium-density PE (MDPE), which is crack resistant for applications in gas pipe pressure fittings.

Plastics based on the PE molecule are widespread because the compound has physical characteristics that are considered safe and useful in a range of environments. These traits include the fact that it remains pliable for an extended period of time electricity 80s song while remaining inert and impervious to damage by most liquids. Since its softness and strength level can be easily adjusted and it can be dyed many colors, it is often used in consumer products from food wrap to shampoo bottles, milk containers, toys, and grocery bags. Potential Dangers

Depending on the compounds its bonded with, PE’s level of toxicity and flammability varies considerably. There are concerns about two versions of the compound in particular, both of which are often used for medical and consumer purposes. Polyethylene-glycol (PEG), which acts as a binding agent for many drugs and is also found in products like shampoo and toothpaste, can cause allergic reactions in certain individuals. Some people experience nausea, flatulence, and diarrhea after being exposed to it, while others get a hives-like rash. The elderly seem to be particularly prone to these k gas station jobs side effects.

In addition, harmful chemicals — including the plasticizer phthalate — may leach from polyethylene-terephthalate (PET), which has been widely used in the plastic bottling industry. Phthalate is associated with hormonal imbalances, increases in allergies, and reduced fertility. Some studies show that it may also contribute to the development of obesity and breast cancer. Environmental Impact

While PE may help to make many ideal gas kinetic energy useful and durable products possible, its environmental impact concerns many experts. It doesn’t biodegrade easily, and can sit in a landfill for hundreds of years. About 20%-24% of all landfill space in the US alone is taken up by plastics, including polyethylene products. However, recycling may reduce this problem, since PE scrap can be melted down and reused.