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Tesi etd-01312018-114958


Thesis type
Tesi di laurea magistrale
Author
BOTONI, GIULIA
URN
etd-01312018-114958
Title
Biodegradable PLA/PBAT blends: mechanical properties, morphology and modeling of energy dissipation during fracture
Struttura
INGEGNERIA CIVILE E INDUSTRIALE
Corso di studi
INGEGNERIA CHIMICA
Commissione
relatore Prof. Lazzeri, Andrea
controrelatore Prof. Polacco, Giovanni
Parole chiave
  • PLA
  • PBAT
  • SEM microscopy
  • J
  • tensile test
  • Fracture Mechanics
Data inizio appello
02/03/2018;
Consultabilità
parziale
Data di rilascio
02/03/2021
Riassunto analitico
In this work was studied the toughening of PLA (poly-lactic acid) biopolymer derived from corn with the biodegradable rubber PBAT ( polybutylene adipate terephthalate).<br>PLA/PBAT blends with different percentage of PBAT were realized by extrusion and injection moulding. The toughening effect was evaluated by performing Charpy tests, tensile tests and three point bending test. FInally a theoretical model to evaluating the density of dissipated energy during the fracture through the plastic volume was applied and charpy specimens’ fracture surface morphology was analyzed using SEM microscopy in order to relate the mechanical properties with  fracture morphology .
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