Polymerization of Ethylene to Polyethylene

nC₂H₄ → (–CH₂–CH₂–)_n

Visão geral

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.

Participantes

Papel	Substância	Coeficiente	Estado
Reagente	Ethylene C₂H₄	1	(g)

Exemplo do cotidiano

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

Importância industrial

O polietileno é o plástico mais produzido no mundo com mais de 100 milhões de toneladas anuais, utilizado em embalagens, construção, automóvel e aplicações médicas.

Propriedades

Tipo: Organic
Reversível: Não
Energia: Exotérmico
ΔH: -93,0 kJ/mol
Catalisador: Ziegler-Natta or metallocene catalysts

Reações relacionadas

Epoxidation of Alkenes (mCPBA) Swern Oxidation Oxidation of Secondary Alcohol to Ketone E2 Elimination (Dehydrohalogenation) Claisen Condensation (Ethyl Acetate) Aldol Condensation of Acetaldehyde Kolbe Electrolysis Baeyer-Villiger Oxidation Beckmann Rearrangement (Cyclohexanone Oxime) Dehydration of Ethanol

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).