Polyethylene

(C₂H₄)ₙ

IUPAC: Polyethene

CAS: 9002-88-4

Tổng quan

Polyethylene is the most widely produced plastic in the world, with annual production exceeding 100 million tonnes. It comes in several varieties (HDPE, LDPE, LLDPE) with different densities and properties. It is used in packaging, bottles, pipes, and films.

Thành phần

Nguyên tố Ký hiệu Nguyên tử Khối lượng nguyên tử
Hydrogen H 4 1,0080
Carbon C 2 12,0110

Thành phần nguyên tố

H
Hydrogen ×4
14,4%
C
Carbon ×2
85,6%

Công dụng

  • • Plastic bags and films (LDPE)
  • • Bottles and containers (HDPE)
  • • Pipes and fittings
  • • Packaging materials

Sự thật thú vị

  • ✦ Accidentally discovered in 1933 by ICI researchers applying high pressure to ethylene
  • ✦ Takes 500-1000 years to decompose in landfills

An toàn

  • ⚠ Generally non-toxic
  • ⚠ Environmental pollution from single-use plastics
  • ⚠ Microplastic contamination

Tính chất

Loại
polymer
Trạng thái
solid
Khối lượng mol
28,05 g/mol
Mật độ
0,9400 g/cm³
Điểm nóng chảy
115,0 °C
Độ hòa tan
insoluble

Còn được gọi là

Polythene PE

Hợp chất liên quan

Cellulose

(C₆H₁₀O₅)ₙ

Nylon-6,6

(C₁₂H₂₂N₂O₂)ₙ

Sodium Polyacrylate

(C₃H₃NaO₂)ₙ

Polycarbonate

(C₁₆H₁₄O₃)ₙ

Polyethylene Terephthalate

(C₁₀H₈O₄)ₙ

Polytetrafluoroethylene

(C₂F₄)ₙ

Polyacrylonitrile

(C₃H₃N)ₙ

Polystyrene

(C₈H₈)ₙ

Starch

(C₆H₁₀O₅)ₙ

Kevlar

(C₁₄H₁₀N₂O₂)ₙ

Frequently Asked Questions

What is Polyethylene?
Polyethylene ((C₂H₄)ₙ) is a polymer compound with the IUPAC name Polyethene.
What is the molecular weight of Polyethylene?
Polyethylene has a molar mass of 28.054 g/mol.
What state is Polyethylene at room temperature?
Polyethylene is a solid at room temperature.
Is Polyethylene organic or inorganic?
Polyethylene is classified as an inorganic compound.
What elements make up Polyethylene?
Polyethylene ((C₂H₄)ₙ) is composed of Hydrogen (H), Carbon (C).