What are the limitations of polypropylene in supporting weight-bearing figurative structures?

Polypropylene is a versatile polymer widely used in various applications, but it has notable limitations when employed in weight-bearing figurative structures. One primary constraint is its relatively low tensile strength compared to metals or reinforced composites, making it unsuitable for heavy loads. Additionally, polypropylene exhibits creep under prolonged stress, leading to gradual deformation over time. Its thermal sensitivity further restricts use in environments with temperature fluctuations, as it may soften or become brittle. While lightweight and cost-effective, polypropylene lacks the rigidity required for large-scale figurative sculptures or architectural elements. For projects demanding long-term structural integrity, alternative materials like fiberglass or steel are often preferred. Understanding these limitations ensures better material selection for durable and stable designs.