Polypropylene rope is damaged by?

Polypropylene rope is damaged by?

• A. Acid
• B. Water
• C. UV light
• D. Bases

Answer: (D)

UV light is the main factor that damages polypropylene rope. The polymer’s chemical structure is resistant to water, acids, and bases, so those don’t typically degrade it under normal conditions. Ultraviolet radiation, however, initiates photo-oxidative reactions that break the polymer chains, leading to surface cracking, embrittlement, and loss of tensile strength. In outdoor use, prolonged sun exposure can make polypropylene rope weaken and fail even if it looks fine otherwise. To mitigate this, store rope away from direct sun, use UV-stabilized or dark-colored rope, and replace rope that shows signs of surface cracking or stiffness.

UV light is the main factor that damages polypropylene rope. The polymer’s chemical structure is resistant to water, acids, and bases, so those don’t typically degrade it under normal conditions. Ultraviolet radiation, however, initiates photo-oxidative reactions that break the polymer chains, leading to surface cracking, embrittlement, and loss of tensile strength. In outdoor use, prolonged sun exposure can make polypropylene rope weaken and fail even if it looks fine otherwise. To mitigate this, store rope away from direct sun, use UV-stabilized or dark-colored rope, and replace rope that shows signs of surface cracking or stiffness.