Material Drying
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Molecular chain breakage caused by PLA hydrolysis
Problem Phenomenon
The molecular weight of PLA drops sharply in a water-containing environment.
Cause Analysis
The ester bonds hydrolyze and break the molecular chains; the higher the temperature, the faster the hydrolysis.
Solution
Fully dry the raw material; add an anti-hydrolysis agent; avoid high-temperature and high-humidity environments.
Key Takeaway
PLA hydrolysis is its main degradation pathway.
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