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Types of Polymerization

High-Density Polyethylene (HDPE)
High-Density Polyethylene (HDPE)

Low Density polyethylene was being produced at extremely high pressures. This high-pressure polymerization created polyethylene with many branches; the branches are created due to intermolecular and intramolecular chain transfer during polymerization. The mechanism for the polymerization of low-density polyethylene is free radical polymerization.

Low-Density Polyethylene (LDPE)
Low-Density Polyethylene (LDPE)

Quick, what’s the difference between low-density polyethylene (LDPE) and high-density polyethylene (HDPE)? Yes, this will be on the quiz… To help you answer that question, I covered HDPE plastic in a previous article, so you can bone up on that polymer if you need to. And I’ll cover LDPE plastic here.

Nylon, Nylon 6, Nylon 6,6
Nylon, Nylon 6, Nylon 6,6

Nylon 66 (nylon 6-6, nylon 6/6 or nylon 6,6) is a type of polyamide or nylon. There are many types of nylon: the two most common for textile and plastics industries are nylon 6 and nylon 66. Nylon 66 is made of two monomers each containing 6 carbon atoms, hexamethylenediamine and adipic acid, which give nylon 66 its name.

image: pslc.ws
Polypropylene (PP)
Polypropylene (PP)

Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications. It is an addition polymer made via chain-growth polymerization from the monomer propylene.

Polystyrene (PS)
Polystyrene (PS)

Polystyrene PS Definition - Polystyrene is a versatile synthetic organic polymer with the chemical formula (C8H8)n. It can be a hard, solid plastic or a... Polystyrene PS Definition - Polystyrene is a versatile synthetic organic polymer with the chemical formula (C8H8)n.

image: pubs.rsc.org
Polyvinyl Chloride (PVC)
Polyvinyl Chloride (PVC)

PVC is a common, strong but lightweight plastic used in construction. It is made softer and more flexible by the addition of plasticizers. If no plasticizers are added, it is known as uPVC (unplasticized polyvinyl chloride) or rigid PVC.

image: google.com
Teflon (Polytetrafluoroethylene)
Teflon (Polytetrafluoroethylene)

PTFE is a fluorocarbon solid, as it is a high-molecular-weight compound consisting wholly of carbon and fluorine. PTFE is hydrophobic: neither water nor water-containing substances wet PTFE, as fluorocarbons demonstrate mitigated London dispersion forces due to the high electronegativity of fluorine.

image: pslc.ws
Thermoplastic Polyurethanes (TPU)
Thermoplastic Polyurethanes (TPU)

Thermoplastic polyurethane (TPU) is any of a class of polyurethane plastics with many properties, including elasticity, transparency, and resistance to oil, grease and abrasion. Technically, they are thermoplastic elastomers consisting of linear segmented block copolymers composed of hard and soft segments.

image: mdpi.com

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