Cargando…

Hydrophobisation of Silica Nanoparticles Using Lauroyl Ethyl Arginate and Chitosan Mixtures to Induce the Foaming Process

We studied silica suspensions with chitosan and biodegradable synthetic surfactant lauroyl ethyl arginate (LAE). Hydrophilic and negatively charged silica nanoparticles were neutralised due to the coating with chitosan. That presence of LAE led to the partial hydrophobisation of their surface, which...

Descripción completa

Detalles Bibliográficos
Autores principales: Krzan, Marcel, Jarek, Ewelina, Petkova, Hristina, Santini, Eva, Szyk-Warszynska, Lilianna, Ravera, Francesca, Liggieri, Libero, Mileva, Elena, Warszynski, Piotr
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9573722/
https://www.ncbi.nlm.nih.gov/pubmed/36236025
http://dx.doi.org/10.3390/polym14194076
_version_ 1784810943885082624
author Krzan, Marcel
Jarek, Ewelina
Petkova, Hristina
Santini, Eva
Szyk-Warszynska, Lilianna
Ravera, Francesca
Liggieri, Libero
Mileva, Elena
Warszynski, Piotr
author_facet Krzan, Marcel
Jarek, Ewelina
Petkova, Hristina
Santini, Eva
Szyk-Warszynska, Lilianna
Ravera, Francesca
Liggieri, Libero
Mileva, Elena
Warszynski, Piotr
author_sort Krzan, Marcel
collection PubMed
description We studied silica suspensions with chitosan and biodegradable synthetic surfactant lauroyl ethyl arginate (LAE). Hydrophilic and negatively charged silica nanoparticles were neutralised due to the coating with chitosan. That presence of LAE led to the partial hydrophobisation of their surface, which favoured their attachment to the surface of a thin foam film. It was found that the presence of small and medium-sized (6–9 nm) hydrophobic particles in the interfacial layer of lamella foam film inhibited the coalescence and coarsening processes, which prolonged the life of the foam. Furthermore, hydrophobising of 30 nm particles allowed the formation of large aggregates precipitating from the mixture under steady-state conditions. These aggregates, however, under the conditions of the dynamic froth flotation process in the foam column, were floated into the foam layer. As a result, they were trapped in the foam film and Plateau borders, effectively preventing liquid leakage out of the foam. These results demonstrate the efficiency of using chitosan-LAE mixtures to remove silica nanoparticles from aqueous phase by foaming and flotation.
format Online
Article
Text
id pubmed-9573722
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-95737222022-10-17 Hydrophobisation of Silica Nanoparticles Using Lauroyl Ethyl Arginate and Chitosan Mixtures to Induce the Foaming Process Krzan, Marcel Jarek, Ewelina Petkova, Hristina Santini, Eva Szyk-Warszynska, Lilianna Ravera, Francesca Liggieri, Libero Mileva, Elena Warszynski, Piotr Polymers (Basel) Article We studied silica suspensions with chitosan and biodegradable synthetic surfactant lauroyl ethyl arginate (LAE). Hydrophilic and negatively charged silica nanoparticles were neutralised due to the coating with chitosan. That presence of LAE led to the partial hydrophobisation of their surface, which favoured their attachment to the surface of a thin foam film. It was found that the presence of small and medium-sized (6–9 nm) hydrophobic particles in the interfacial layer of lamella foam film inhibited the coalescence and coarsening processes, which prolonged the life of the foam. Furthermore, hydrophobising of 30 nm particles allowed the formation of large aggregates precipitating from the mixture under steady-state conditions. These aggregates, however, under the conditions of the dynamic froth flotation process in the foam column, were floated into the foam layer. As a result, they were trapped in the foam film and Plateau borders, effectively preventing liquid leakage out of the foam. These results demonstrate the efficiency of using chitosan-LAE mixtures to remove silica nanoparticles from aqueous phase by foaming and flotation. MDPI 2022-09-28 /pmc/articles/PMC9573722/ /pubmed/36236025 http://dx.doi.org/10.3390/polym14194076 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Krzan, Marcel
Jarek, Ewelina
Petkova, Hristina
Santini, Eva
Szyk-Warszynska, Lilianna
Ravera, Francesca
Liggieri, Libero
Mileva, Elena
Warszynski, Piotr
Hydrophobisation of Silica Nanoparticles Using Lauroyl Ethyl Arginate and Chitosan Mixtures to Induce the Foaming Process
title Hydrophobisation of Silica Nanoparticles Using Lauroyl Ethyl Arginate and Chitosan Mixtures to Induce the Foaming Process
title_full Hydrophobisation of Silica Nanoparticles Using Lauroyl Ethyl Arginate and Chitosan Mixtures to Induce the Foaming Process
title_fullStr Hydrophobisation of Silica Nanoparticles Using Lauroyl Ethyl Arginate and Chitosan Mixtures to Induce the Foaming Process
title_full_unstemmed Hydrophobisation of Silica Nanoparticles Using Lauroyl Ethyl Arginate and Chitosan Mixtures to Induce the Foaming Process
title_short Hydrophobisation of Silica Nanoparticles Using Lauroyl Ethyl Arginate and Chitosan Mixtures to Induce the Foaming Process
title_sort hydrophobisation of silica nanoparticles using lauroyl ethyl arginate and chitosan mixtures to induce the foaming process
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9573722/
https://www.ncbi.nlm.nih.gov/pubmed/36236025
http://dx.doi.org/10.3390/polym14194076
work_keys_str_mv AT krzanmarcel hydrophobisationofsilicananoparticlesusinglauroylethylarginateandchitosanmixturestoinducethefoamingprocess
AT jarekewelina hydrophobisationofsilicananoparticlesusinglauroylethylarginateandchitosanmixturestoinducethefoamingprocess
AT petkovahristina hydrophobisationofsilicananoparticlesusinglauroylethylarginateandchitosanmixturestoinducethefoamingprocess
AT santinieva hydrophobisationofsilicananoparticlesusinglauroylethylarginateandchitosanmixturestoinducethefoamingprocess
AT szykwarszynskalilianna hydrophobisationofsilicananoparticlesusinglauroylethylarginateandchitosanmixturestoinducethefoamingprocess
AT raverafrancesca hydrophobisationofsilicananoparticlesusinglauroylethylarginateandchitosanmixturestoinducethefoamingprocess
AT liggierilibero hydrophobisationofsilicananoparticlesusinglauroylethylarginateandchitosanmixturestoinducethefoamingprocess
AT milevaelena hydrophobisationofsilicananoparticlesusinglauroylethylarginateandchitosanmixturestoinducethefoamingprocess
AT warszynskipiotr hydrophobisationofsilicananoparticlesusinglauroylethylarginateandchitosanmixturestoinducethefoamingprocess