The valorization of poultry feathers wastes is very important to reduce the environmental pollution deriving from their disposal. In this frame, we present the production process of completely natural, biodegradable, biocompatible, and eco-friendly composites made by not soluble keratin (NSK) and poly(lactic acid) (PLA). NSK has been obtained as a byproduct of a microwave-assisted keratin extraction from poultry feathers and it has been added to PLA pellets without adding any additional compatibilizers or plasticizers, unlike from the other works reported in the literature until now. The mixture has been used to obtain homogeneous NSK-based PLA filaments by means of hot-melt extrusion technology. The filaments have been subsequently 3D printed to explore applications in the additive manufacturing field. All the samples have unaltered thermal stability, but reduced toughness with respect to neat PLA. Other tested parameters (water adsorption, glass transition, and crystallinity) are dependent on NSK content and fabrication technology. Besides, Fourier Transform Infrared Spectroscopy highlights the differences in the structure of the NSK-based PLA filaments and 3D printed samples.

Valorization of not soluble byproducts deriving from green keratin extraction from poultry feathers as filler for biocomposites

Pulidori, E.
Primo
;
Micalizzi, S.
Secondo
;
Bernazzani, L.;De Maria, C.
;
Pelosi, C.
;
Tinè, M. R.;Vozzi, G.
Penultimo
;
Duce, C.
Ultimo
2022-01-01

Abstract

The valorization of poultry feathers wastes is very important to reduce the environmental pollution deriving from their disposal. In this frame, we present the production process of completely natural, biodegradable, biocompatible, and eco-friendly composites made by not soluble keratin (NSK) and poly(lactic acid) (PLA). NSK has been obtained as a byproduct of a microwave-assisted keratin extraction from poultry feathers and it has been added to PLA pellets without adding any additional compatibilizers or plasticizers, unlike from the other works reported in the literature until now. The mixture has been used to obtain homogeneous NSK-based PLA filaments by means of hot-melt extrusion technology. The filaments have been subsequently 3D printed to explore applications in the additive manufacturing field. All the samples have unaltered thermal stability, but reduced toughness with respect to neat PLA. Other tested parameters (water adsorption, glass transition, and crystallinity) are dependent on NSK content and fabrication technology. Besides, Fourier Transform Infrared Spectroscopy highlights the differences in the structure of the NSK-based PLA filaments and 3D printed samples.
2022
Pulidori, E.; Micalizzi, S.; Bramanti, E.; Bernazzani, L.; De Maria, C.; Pelosi, C.; Tinè, M. R.; Vozzi, G.; Duce, C.
File in questo prodotto:
File Dimensione Formato  
Manuscript_Pulidori Micalizzi et al..pdf

accesso aperto

Descrizione: pre-print
Tipologia: Documento in Pre-print
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 2.47 MB
Formato Adobe PDF
2.47 MB Adobe PDF Visualizza/Apri
Manuscript_Pulidori Micalizzi et al. revised.docx

Open Access dal 05/02/2022

Descrizione: post-print
Tipologia: Documento in Post-print
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 3.69 MB
Formato Microsoft Word XML
3.69 MB Microsoft Word XML Visualizza/Apri
2022_JTAC fibrille.pdf

solo utenti autorizzati

Descrizione: versione finale dell'editore
Tipologia: Versione finale editoriale
Licenza: NON PUBBLICO - accesso privato/ristretto
Dimensione 1.94 MB
Formato Adobe PDF
1.94 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/1119396
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 5
  • ???jsp.display-item.citation.isi??? 4
social impact