Another property critical to geotextile performance in some applications is chemical resistance. Generally speaking , polyester geotextiles have excellent stability to many chemical classes such as salts, organic acids, organic solvents, oxidizing agents, reducing agents, gases and fuels ( petroleum).
Polyester fibres have outstanding thermal properties . They melt in the range of 478-490 0 F, crystallize at 250-265 0 F, all well above normal conditions encountered in geotextile applications . In addition , polyester fibres maintain excellent flexibility and strength at temperature below freezing. (29)
8-Resistance to microorganisms, insects, and aging.Bacteria, mildew, and moth larvae will not attack polyesters. Age has no appreciable effect on polyester