Polymerization of Ethylene to Polyethylene

nC₂H₄ → (–CH₂–CH₂–)_n

Overview

Ethylene molecules undergo addition polymerization to form polyethylene, the world's most produced plastic. The C=C double bond opens and links to adjacent monomers. Ziegler-Natta catalysts produce linear HDPE, while radical initiation produces branched LDPE. Over 100 million tonnes are produced annually.

Participants

Role	Substance	Coefficient	State
Reactant	Ethylene C₂H₄	1	(g)

Everyday Example

Plastic bags, bottles, food containers, and plastic wrap are all made from polyethylene produced by this polymerization reaction.

Industrial Importance

Polyethylene is the world's most produced plastic at over 100 million tonnes annually, used in packaging, construction, automotive, and medical applications.

Properties

Type: Organic
Reversible: No
Energy: Exothermic
ΔH: -93.0 kJ/mol
Catalyst: Ziegler-Natta or metallocene catalysts

Related Reactions

Aldol Condensation of Acetaldehyde Amide Formation (Acetic Acid + Ammonia) Baeyer-Villiger Oxidation Beckmann Rearrangement (Cyclohexanone Oxime) Bromination of Ethylene Buchwald-Hartwig Amination Cannizzaro Reaction of Formaldehyde Catalytic Hydrogenation of Ethylene Claisen Condensation (Ethyl Acetate) Condensation Polymerization (Nylon 6,6)

Frequently Asked Questions

What is the equation for Polymerization of Ethylene to Polyethylene?

The balanced equation is: nC₂H₄ → (–CH₂–CH₂–)ₙ.

What type of reaction is Polymerization of Ethylene to Polyethylene?

Polymerization of Ethylene to Polyethylene is a organic reaction.

Is Polymerization of Ethylene to Polyethylene exothermic or endothermic?

Polymerization of Ethylene to Polyethylene is exothermic (releases energy). The enthalpy change (ΔH) is -93.0 kJ/mol.

What conditions are needed for Polymerization of Ethylene to Polyethylene?

This reaction requires a catalyst (Ziegler-Natta or metallocene catalysts).