Polymerization of Ethylene to Polyethylene

nC2H4 → (–CH2–CH2–)n

Tổng quan

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.

Người tham gia

Vai trò Chất Hệ số Trạng thái
Chất phản ứng Ethylene C₂H₄ 1 (g)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

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

Tính chất

Loại
Organic
Thuận nghịch
Không
Năng lượng
Tỏa nhiệt
ΔH
-93,0 kJ/mol
Chất xúc tác
Ziegler-Natta or metallocene catalysts

Phản ứng liên quan

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).