What are the differences in thermal decomposition products between WPC and wood flower boxes?

The thermal decomposition products of Wood-Plastic Composites (WPC) and wood flower boxes differ significantly due to their material composition. WPC, a blend of wood fibers and thermoplastics, releases a mix of volatile organic compounds (VOCs), carbon dioxide, and char during pyrolysis. In contrast, wood flower boxes, being purely organic, primarily produce water vapor, carbon monoxide, and methane, with minimal synthetic residues.

WPC's decomposition involves polymer degradation, leading to toxic fumes like styrene or formaldehyde, depending on the plastic used. Wood, however, decomposes more cleanly, generating fewer harmful emissions. The char residue from WPC is often non-biodegradable, while wood ash is eco-friendly. Understanding these differences helps in selecting sustainable materials for gardening and construction applications.