What are the effects of resin degradation byproducts on the environment when WPC trash cans degrade?

When Wood Plastic Composite (WPC) trash cans degrade, they release a cocktail of byproducts with significant environmental consequences. The primary concern is the breakdown of the plastic polymer matrix, typically polyethylene or polypropylene. As these plastics fragment due to UV radiation, heat, and mechanical stress, they release chemical additives like plasticizers, stabilizers, and colorants. These substances can leach into the soil and groundwater, potentially harming soil microbiology and plant life. Furthermore, the degradation process generates microplastics, which persist in the environment for centuries. These tiny particles can be ingested by wildlife, entering the food chain and posing risks to ecosystems and human health. The wooden flour component, while biodegradable, can also release treated residues. The cumulative effect is a long-term, slow-release contamination source that challenges waste management sustainability claims.