We have fabricated ecocompatible Pickering emulsions based on halloysite nanotubes and ionic biopolymers (chitosan and pectin) from renewable resources. The effect of pectin and chitosan on the Pickering emulsion was investigated by direct visualization of the oil droplets and by the thermodynamic characterization at the interface. Pectin enhances the Pickering emulsion stability, while a phase separation and nonhomogeneous gel was observed in the presence of chitosan. We have demonstrated that the Pickering emulsion in a pectin based gel phase is suitable for wax layer removal from a marble surface. A controlled cleaning is achieved by tuning the contact time between the gel and the marble surface. Due to its nonhomogeneous structure, chitosan-based gel does not show proper wax removal ability. This work opens up a new sustainable approach in preparing cleaning formulations for conservation of cultural heritage.

Cavallaro G., Milioto S., Nigamatzyanova L., Akhatova F., Fakhrullin R., Lazzara G. (2019). Pickering Emulsion Gels Based on Halloysite Nanotubes and Ionic Biopolymers: Properties and Cleaning Action on Marble Surface. ACS APPLIED NANO MATERIALS, 2(5), 3169-3176 [10.1021/acsanm.9b00487].

Pickering Emulsion Gels Based on Halloysite Nanotubes and Ionic Biopolymers: Properties and Cleaning Action on Marble Surface

Cavallaro G.
;
Milioto S.
;
Lazzara G.
2019-05-03

Abstract

We have fabricated ecocompatible Pickering emulsions based on halloysite nanotubes and ionic biopolymers (chitosan and pectin) from renewable resources. The effect of pectin and chitosan on the Pickering emulsion was investigated by direct visualization of the oil droplets and by the thermodynamic characterization at the interface. Pectin enhances the Pickering emulsion stability, while a phase separation and nonhomogeneous gel was observed in the presence of chitosan. We have demonstrated that the Pickering emulsion in a pectin based gel phase is suitable for wax layer removal from a marble surface. A controlled cleaning is achieved by tuning the contact time between the gel and the marble surface. Due to its nonhomogeneous structure, chitosan-based gel does not show proper wax removal ability. This work opens up a new sustainable approach in preparing cleaning formulations for conservation of cultural heritage.
3-mag-2019
Settore CHIM/12 - Chimica Dell'Ambiente E Dei Beni Culturali
Cavallaro G., Milioto S., Nigamatzyanova L., Akhatova F., Fakhrullin R., Lazzara G. (2019). Pickering Emulsion Gels Based on Halloysite Nanotubes and Ionic Biopolymers: Properties and Cleaning Action on Marble Surface. ACS APPLIED NANO MATERIALS, 2(5), 3169-3176 [10.1021/acsanm.9b00487].
File in questo prodotto:
File Dimensione Formato  
pickering_cleaning_acsanm2019.pdf

Solo gestori archvio

Descrizione: articolo
Tipologia: Versione Editoriale
Dimensione 9.72 MB
Formato Adobe PDF
9.72 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pickering emulsion gels based on halloysite nanotubes and ionic biopolymers pre print.pdf

accesso aperto

Descrizione: articolo
Tipologia: Pre-print
Dimensione 6.68 MB
Formato Adobe PDF
6.68 MB Adobe PDF Visualizza/Apri

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/10447/492568
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 73
  • ???jsp.display-item.citation.isi??? 64
social impact