What are the effects of long-term exposure to road salts on polyethylene?

Long-term exposure to road salts can significantly impact polyethylene, a widely used polymer in construction, packaging, and infrastructure. Road salts, primarily composed of sodium chloride or calcium chloride, accelerate the degradation of polyethylene through chemical and physical processes. Over time, these salts penetrate the polymer matrix, causing brittleness, cracking, and reduced tensile strength. Oxidation and UV exposure further exacerbate the damage, leading to premature material failure. Studies indicate that high concentrations of road salts can also alter polyethylene's molecular structure, diminishing its durability in harsh environments. Understanding these effects is crucial for industries relying on polyethylene to ensure long-term performance and sustainability. Mitigation strategies, such as additive stabilization or protective coatings, are often recommended to enhance resistance against salt-induced degradation.