Resistance of Polyethylene Terephtalate Foil to the Influence of Temperature and Humidity

 

Jovan Radulović

 

The resistance of polyethylene terephtalatе foil against the influence of change of temperature and humidity was investigated. The physical, mechanical and optical properties of polyethylene terephtalatе foils before and after exposure to the mentioned parameters are presented. The factors affecting the change of characteristics of this material were described.

It was concluded that decrease of tensile strength and tearing force had occurred, but material did not degrade in such manner that cracks, ie. cracking of polyethylene terephtalatе foil, would appear.

Key words: polymers, thermoplastic polymers, polyethylene terephtalatе, foils, temperature effect, humidity effect, material properties.