The role of shear and stabilizer on PLA degradation
Tipo
Artigo
Data de publicação
2016
Periódico
Polymer Testing
Citações (Scopus)
78
Autores
Oliveira M.
Santos E.
Araujo A.
Fechine G.J.M.
Machado A.V.
Botelho G.
Santos E.
Araujo A.
Fechine G.J.M.
Machado A.V.
Botelho G.
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Resumo
© 2016 Elsevier Ltd. All rights reserved.The role of temperature, shear and oxygen on PLA degradation was investigated. Thermo-mechanical degradation induces a larger decrease in PLA molecular weight than thermo-oxidative degradation. This was associated with different degradation processes (mainly chain scission) that took place under the two conditions. Given the PLA robustness to endure reprocessing, it was possible to conclude that the primary and secondary antioxidant (B900) had a synergetic effect on PLA stability.
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Assuntos Scopus
Chain scission , Degradation process , Poly lactic acid , Synergetic effect , Thermo-mechanical degradation , Thermo-oxidative degradation