What are the differences in resistance to tree sap or resin between PVC and polypropylene?

When comparing PVC (polyvinyl chloride) and polypropylene in terms of resistance to tree sap or resin, several key differences emerge. PVC is known for its excellent chemical resistance, including to many organic substances like tree sap and resin. Its rigid structure and chlorine content make it less prone to degradation when exposed to these sticky substances.

Polypropylene, on the other hand, is also highly resistant to many chemicals, including some organic compounds. However, its resistance to tree sap and resin may vary depending on the specific composition of the sap or resin. While polypropylene is generally durable, prolonged exposure to certain types of resin might cause slight swelling or surface softening over time.

For applications where frequent contact with tree sap or resin is expected, PVC often proves more reliable due to its superior chemical stability. Polypropylene remains a strong alternative for less aggressive environments, offering good balance between cost and performance. Always consider the specific type of sap or resin and environmental conditions when choosing between these two materials.