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How does prolonged exposure to saltwater affect polyethylene coastal sculptures?
Polyethylene coastal sculptures are popular for their durability and resistance to weathering, but prolonged exposure to saltwater can still cause significant degradation. Over time, the marine environment accelerates polymer breakdown through processes like UV radiation, salt crystallization, and microbial activity.
Saltwater penetrates microscopic pores in polyethylene, leading to surface erosion, discoloration, and loss of structural integrity. Chloride ions weaken polymer chains, while constant wave action causes mechanical wear. Additionally, biofouling—such as algae and barnacle growth—further stresses the material.
To mitigate damage, artists and conservators use UV-stabilized polyethylene, protective coatings, and regular cleaning. Understanding these effects helps in designing sculptures that withstand harsh coastal conditions while maintaining aesthetic appeal. Proper maintenance ensures these artworks endure as lasting landmarks by the sea.
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