Material Analysis
2 views
Performance decline after the use of PLA recycled material
Problem Phenomenon
After adding recycled material, the impact strength and transparency of PLA products drop significantly.
Cause Analysis
PLA is sensitive to heat history, and the molecular weight decreases after multiple processing; the lactic acid produced by degradation lowers the pH value and catalyzes further degradation.
Solution
Control the recycled material ratio ≤20%; fully dry the recycled material; add a chain extender to restore the molecular weight.
Key Takeaway
PLA is sensitive to heat history, and recycling management is particularly important.
Was this helpful?
0 people found this helpful
Thank you for your feedback!