LLDPE (Linear-Low Density Polyethylene) is defined by a density range of 0.915 - 0.925 g/cm 3. is a substantially linear polymer, with significant numbers of short branches, commonly made by copolymerization of ethylene with short-chain alpha-olefins (e.g. Cross-linked polyethylene, commonly abbreviated PEX, XPE or XLPE, is a form of polyethylene with cross-links.It is used predominantly in building services pipework systems, hydronic radiant heating and cooling systems, domestic water piping, and insulation for high tension (high voltage) electrical cables. HDPE is a type of polyethylene, the most common plastic which accounts for over 34% of the global plastic market. Methane gas (Figure 1-1a) is 1-butene, 1-hexene, and 1-octene). Definition: A linear polymer of the simple ethylene molecule synthesized as a fine white powder. In chemistry, n acts as a placeholder for a number.N gives you some idea about the potential length of the chain. Polyethylene (PE) is an organic polymer made by the polymerization of monomer subunits. Definition of Polyethylene Terephthalate “A polyethylene terephthalate is a condensation polymer of both terephthalic acid and ethylene glycol.” The reaction’s by-product to create this compound is water, and so it is an example of step-growth polymerization or condensation. Polyethylene is used in applications ranging for films, tubes, plastic parts, laminates, etc. The difference between polyolefin and polyethylene is that polyolefin is made from the polymerization of alkenes whereas polyethylene is made from the polymerization of ethylene molecules. Based on this mechanism, there are two types of polymerization. in several markets (packaging, automotive, electrical, etc.). Physical Chemistry and Mechanical Properties of HDPE High-density polyethylene (HDPE)(0.941