This analysis demonstrates the impact of accelerated weathering on compostability in biodegradable polymers, suggesting significant interactions with environmental conditions.
Key Points
The aim is to analyze how accelerated weathering affects the properties and compostability of biodegradable polymers and their composites with agave fibers.
Accelerated weathering exposure for up to 768 hours
Physical, thermal, rheological, and mechanical property analysis of PLA, MaterBi, and PHBV
Assessment of biodegradation under composting conditions
Characterization of changes in color, porosity, and melt flow index (MFI)
Mechanical testing for tensile, flexural, and impact strengths
PLA showed significant color changes and decreased mechanical strength over time
MFI of PLA and MaterBi increased, indicating polymer chain scission
PHBV remained stable in mechanical properties compared to PLA and MaterBi
Biocomposites demonstrated improved properties initially but followed similar degradation patterns as neat polymers
Prior weathering exposure accelerated disintegration during composting