Chemical properties: Polyethylene is resistant to a variety of organic solvents, and is resistant to a variety of acid and alkali corrosion, but it is not resistant to oxidizing acids, such as nitric acid. Polyethylene will be oxidized in an oxidizing environment.
Physical properties: Polyethylene can be considered transparent in the state of a film, but when it exists in a block shape, due to the large number of crystals inside, it will undergo strong light scattering and become opaque. The degree of crystallization of polyethylene is affected by the number of branches. The more branches, the harder it is to crystallize. The melting temperature of polyethylene crystals is also affected by the number of branch chains, which range from 90 degrees Celsius to 130 degrees Celsius. The more branch chains, the lower the melting temperature. Polyethylene single crystals can usually be prepared by dissolving high-density polyethylene in xylene in an environment above 130 degrees Celsius.
