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

• Tipo: Artigo em Revista Científica Internacional
• Data: 2022

Autores

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

Revista

Título: SURFACES AND INTERFACES

Vol. 29

Páginas: 1-9

ISSN: 2468-0230

Editora: Elsevier

Indexação

ISI Web of Knowledge - 4 Citações

Scopus - 3 Citações

Projetos Associados

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

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9