Development of water-in-oil Pickering emulsions from sodium oleate surface-modified nano-hydroxyapatite

• Type: Article in International Scientific Journal
• Date: 2022

Authors

Andreia Ribeiro (Author) Other; Manrique, Y.A. (Author) FEUP; José Carlos B. Lopes (Author) Other; Madalena M. Dias (Author) FEUP; Maria Filomena Barreiro (Author) Other

Journal

Title: SURFACES AND INTERFACES

Vol. 29

Pages: 1-9

ISSN: 2468-0230

Publisher: Elsevier Ltd

Indexing

ISI Web of Knowledge - 4 Citations

Scopus - 3 Citations

Associated Projects

LA LSRE-LCM - Financiamento Plurianual 2020-2023 para a Unidade LA LSRE-LCM Laboratório de Processos de Separação e Reacção - Laboratório de Catálise e Materiais

Other information

Authenticus ID: P-00W-1NR

DOI: 10.1016/j.surfin.2022.101759

Abstract (EN): The stabilisation of water-in-oil (W/O) Pickering emulsions is still a challenge for the scientific community. In this work, sodium oleate (SO) surface modified nano-hydroxyapatite (n-HAp) particles were produced and tested as W/O stabilisers. The modified n-HAp particles presented a wettability dependent on the used SO content, switching from hydrophilic (initial state) to hydrophobic (one SO layer) and back to hydrophilic (two SO layers). The Pickering emulsions produced with the particles holding one SO layer (contact angle similar to 90 degrees) showed their tight adsorption at the water-oil interface (confocal analysis), and maintained the stability up to 15 days. Overall this work provides new developments in the field of W/O Pickering emulsions, a topic less studied than O/W, opening new avenues for several applications.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9