PVC in its native form is brittle and hard, adding other compounds called plasticizers makes PVC softer. Polyethylene's properties depend on the type. LDPE not as strong as HDPE due to irregular packing of polymer chains
what is the main difference between polyethylene and polyesters what is the main difference between polyethylene and polyesters
The main difference between polypropylene and polyethylene is their chemical structure. Polypropylene has a more rigid structure, making it stiffer and more heat-resistant than polyethylene. Polyethylene is more flexible and has a lower melting point. You can also differentiate them by their density, with polyethylene being less dense than polypropylene.
There is no difference between polythene and polyethylene. Polythene is simply another name for polyethylene, which is a common type of plastic material used in many products such as plastic bags, containers, and packaging.
High-density polyethylene (HDPE) has a higher density and stronger intermolecular forces, making it more rigid and resistant to heat and chemicals compared to low-density polyethylene (LDPE). LDPE is more flexible and has less strength and chemical resistance, but it is easier to process and has better impact resistance.
Polyethylene oxide and polyethylene glycol are both polymers made of repeating ethylene glycol units. The main difference between them is their molecular weight. Polyethylene oxide has a lower molecular weight and is a liquid at room temperature, while polyethylene glycol has a higher molecular weight and is a solid or semi-solid at room temperature. Additionally, polyethylene glycol is commonly used in pharmaceuticals and cosmetics, while polyethylene oxide is used in industrial applications.
Polyethylene terephthalate (PET) fits the definition of a polyester so the name is redundant. I think PETP is simply an old abbreviation for PET.
Ethylene glycol is a simple compound used in antifreeze, while polyethylene glycol is a larger molecule used in various products like cosmetics and medications. The main difference is in their chemical structures and uses.
The difference between strength and hardness is that the strength refers to the force that is present between the bonds. Strength attributes to how strong or weak the force between the bonds. Hardness refers to the nature of the force, which basically is how rigid or flexible the bonds between particles.
Polyethylene and polythene are the same material. Polythene is a common term for polyethylene in certain countries, particularly in the UK and India. Both refer to a type of synthetic polymer that is widely used in various applications, such as packaging and manufacturing.
Yes. Conditioning helps you to prepare.
fc'=0.87 fck fc'= cylinder strength fck= cube strength
Kevlar is a type of aramid fiber known for its high strength and heat resistance, commonly used in body armor and protective gear. PE, or polyethylene, is a type of thermoplastic polymer that is also used in body armor due to its high strength and light weight. The main difference is in their molecular structure and manufacturing process, with Kevlar being more heat resistant and PE being lighter.