What are the differences in thermal expansion between rattan types in sculptures?

Thermal expansion is a critical factor in the longevity and stability of rattan sculptures, as different rattan types react uniquely to temperature changes. Natural rattan, being an organic material, exhibits varying degrees of expansion and contraction based on its density, moisture content, and fiber structure. For instance, denser rattan varieties, such as those from mature plants, tend to expand less under heat compared to younger, more porous rattan. This difference can lead to structural stress in sculptures if not accounted for during construction. Additionally, treated or synthetic rattan may show reduced thermal expansion due to chemical stabilization. Understanding these variations helps artists select the right rattan type for their sculptures, ensuring durability in diverse climates. Proper drying and sealing techniques can further mitigate unwanted expansion, preserving the artwork's integrity over time.