How does the resistance to splintering compare between polypropylene and PVC?

When comparing polypropylene (PP) and polyvinyl chloride (PVC) for resistance to splintering, several factors come into play. Polypropylene is known for its high flexibility and impact resistance, making it less prone to splintering under stress. Its semi-crystalline structure allows it to absorb energy without fracturing easily.

On the other hand, PVC, while rigid and strong, can become brittle over time, especially when exposed to UV light or extreme temperatures. Unplasticized PVC (uPVC) is more susceptible to cracking and splintering compared to PP. However, modified PVC blends with plasticizers can improve flexibility and reduce splintering risks.

For applications requiring long-term durability and minimal splintering, polypropylene often outperforms standard PVC. However, the choice depends on environmental conditions, load requirements, and specific material formulations. Both plastics have unique advantages, but PP generally offers superior resistance to splintering in most scenarios.