What are the effects of prolonged exposure to tree resins on polyethylene?

Prolonged exposure to tree resins can significantly affect polyethylene, a widely used polymer. Tree resins, which contain organic acids and volatile compounds, may cause surface degradation, reduced tensile strength, and increased brittleness in polyethylene over time. The interaction between resin components and polyethylene molecules can lead to oxidation, chain scission, and loss of mechanical properties. Environmental factors like UV radiation and temperature fluctuations can accelerate these effects. Understanding these impacts is crucial for applications where polyethylene is exposed to natural resins, such as in outdoor furniture, packaging, or agricultural films. Research suggests that additives or protective coatings may mitigate these adverse effects, preserving polyethylene's functionality in resin-rich environments.