Plastics are polymers, meaning that they compose of essentially one molocule shape repeated continuously to for a chain of molocules with the same atomic structure.
For example a plastic shopping bag is usually made of polyethylene. The repeated molocule or monomer in this plastic is C2H4 or ethylene. Hence polyethylene.
The chemical composition of plastics is different depending on what type of plastic your dealing with.
But for the most part the raw material of plastic is hydrocarbons found naturally in oil.
Take cellulose acetate--a very popular polymer, used mostly in thin films. It's made from cotton. Some rubbers are made from the sap of a tree. The plastic in your soda bottle is made using a process that uses ethylene glycol (a major component of antifreeze) as an ingredient. Silicones are made from sand. Vinyl is made from acetylene.
Today most plastics are made from petrochemicals (crude oil and natural gas), although they can also be produced from corn and other biomasses. In manufacture from petrochemicals, refineries process crude oil to produce, first, fuels, such as gasoline, diesel, and a number of different lubricants. Then they spin off a wide variety of other petrochemicals. Some of these other petrochemicals are then used by chemical plants to make a wide variety of products such as fertilizers and plastic resins. Plastic resins are, in turn, used to produce many different types of plastic.
The majority of what we know as plastic today is made from materials that are extracted from crude oil. Often the same type of crude oil that is used to produce the fuels for cars.
There are many other types of polymer, both natural and synthetic: cellulose, starch, silicones, Teflon, PVC, etc.
Add And don't forget the silicones, which whilst an inorganic base, commonly contain organic materials in their composition.
Cellulose-acetate (CA): Commonly used pair make transparent sheets.
-Ethyl cellulose (EC)-used in aeronautics for its lightness and strength.
-Polyethylene (PE): There are four types: high density, low density, linear low density polyethylene and polyethylene terephthalate.
-Polyvinyl Chloride (PVC): It is highly resistant to corrosive liquids and therefore is used in tanks, drainage pipes, windows, pipes and electrical boxes.
-Polymethyl methacrylate (PMMA): It polishes easily and is resistant to shock. It is often used as a substitute for glass, decorative objects, aircraft windows, optical parts ...
-Polystyrene (PS): It can be colored and has a good mechanical strength. It is used in furniture, toys, pens ... The expanded polystyrene (Styrofoam) is widely used in the manufacture of protective packaging for insulation in building construction.
-Polypropylene (PP): It is very hard, resistant to corrosion and heat, supports multiple bent and formed into wires without breaking. It is used in cases, piping hot fluids, syringes, etc..
-Polyamide (PA): The best known is nylon, which is very strong and tough and easy stringing. Used for gears, machine parts and appliances, in the textile and cordage.
Most modern plastic bottles are made from pure high-density polyethylene, or some similar plastic material that may be moulded. The raw material is ethylene gas, or similar, and formed using and heat and pressure for the polymerization process.
If you're talking about the transparent plastic bottles in which you purchase Cola, mineral water and so on, they are made from PET (polyethylene terephthalate). The raw materials for this polymer are ethylene glycol and terephthalate, or terephthalic acid. Much nonsense is spoken about alleged risks from the degredation of PET, and formation of acetaldehyde and antimony which can get into the drink that the bottle holds. The reality is that acetaldehyde only occurs in detectable amounts in the thermal breakdown of PET, which takes place at very elevated temperatures (280°C plus) and is therefore only going to occur if the polymer is overheated. Antimony is removed by washing, therefore these contaminants are a result of poor handling, not an intrinsic problem of the polymer.
# Bowls # Toys # Toothbursh # Bootles these are all make from plastic By MO
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Plastic bottles come in many different sizes, and the various types of plastic used to make bottles have different densities. Please be more specific.
Paper, cardboard, wax, plastic, wood, metal - it depends on the circumstances in which the template is to be used.
Water bottles come in all different sizes from 330 ml to 1 L to 10L.
PET or PETE = polyethylene terephthalate, after the plastic used to make the bottles
Bisphenol-A is commonly used to make plastic bottles, and improve the plasticity of plastics to make them easier to work. For example in plastic drink bottles, and similar plastic goods. There is a good article in Wikipedia.org.
You have to buy flexible plastic hose, there is no way you could make it, even with the correct materials.
they are better for enviroment because they last longer than plastic and are not thrown away as aften as plastic bottles
Plastic bottles are produced by blow molding.
Yes there is a plastic that dissloves in water.