What is the chemical formula for low density polyethylene?
What is the chemical formula for low density polyethylene?
Polyethylene
| Names | |
|---|---|
| Chemical formula | (C2H4)n |
| Density | 0.88–0.96 g/cm3 |
| Melting point | 115–135 °C (239–275 °F; 388–408 K) |
| log P | 1.02620 |
What is the chemical name of polythene?
polyethene
Polyethylene or polythene (PE), IUPAC name polyethene or poly(methylene), is the most common plastic.
Why do polymers have low density?
Why are polymers less dense than metals? In polymers, molecules can be very long and branched in shape, meaning they cannot ‘fit’ together very well. They are therefore not as closely packed, and so are not as dense as metals.
How do you make low density polyethylene?
LDPE is produced by compressing monomer ethylene gas in an autoclave or tubular reactor to facilitate polymerization—i.e., the linking of monomers into polymer chains. HDPE is created by heating petroleum to very high temperatures.
How many carbons does polyethylene have?
A molecule of polyethylene is nothing more than a long chain of carbon atoms, with two hydrogen atoms attached to each carbon atom….NMR Spectra of LDPE.
| Other plastic polymers include: | Other fiber polymers include: |
|---|---|
| Polystyrene | Nylon |
| Polycarbonate | Kevlar and Nomex |
| PVC | Polyacrylonitrile |
| Nylon | Cellulose |
What is low density polymers and give it’s properties?
Low-density polyethelene (LDPE) is high clarity and chemically inert polymer that is widely used, owing to its flexibility, barrier properties, good impact strength, and stress crack resistance. It is also one of the more economic polymers available.
What is Schedule 40 PE pipe?
Schedule 40 pipe has thinner walls, so it is best for applications involving relatively low water pressure. Schedule 80 pipe has thicker walls and is able to withstand higher PSI (pounds per square inch). This makes it ideal for industrial and chemical applications.
What is low density polyethylene used for?
Low density polyethylene ( LDPE ) is used mainly in film applications for both packaging and non-packaging applications. Other markets include extrusion coatings, sheathing in cables and injection moulding applications.
What is a low density material?
Low density means there are relatively large spaces between atoms. That means materials may be compressed relatively easily, which is why foam and other low-density substances make good packing materials. Polyethylene is an extremely diverse packaging material. Polyethylene can be soft and stretchy, or hard and strong.
What is LDPE plastic material?
LDPE (low density polyethylene) is a soft, flexible, lightweight plastic material. It is often used for orthotics and prosthetics. LDPE has good chemical and impact resistance and is easy to fabricate and form.
What are the chemical properties of polyethylene?
The properties of polyethylene can be divided into mechanical, chemical, electrical, optical, and thermal properties. Polyethylene is of low strength, hardness and rigidity, but has a high ductility and impact strength as well as low friction.