Continuous production of hydroxyapatite Pickering emulsions using a mesostructured reactor

• Type: Article in International Scientific Journal
• Date: 2021

Authors

Andreia Ribeiro (Author) FEUP; Manrique, Y.A. (Author) FEUP; Barreiro, F (Author) Other; Lopes, JCB (Author) Other; Madalena M. Dias (Author) FEUP

Journal

Title: Colloids and Surfaces A: Physicochemical and Engineering Aspects

Vol. 616

ISSN: 0927-7757

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 13 Citations

Scopus - 13 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-00T-JSY

DOI: 10.1016/j.colsurfa.2021.126365

Abstract (EN): Emulsions are used in a wide range of applications, including food and cosmetics. Nowadays, the demand for sustainable products has increased with Pickering emulsions emerging as clean alternatives. To achieve the industrial implementation of Pickering emulsions, continuous production and less intensive energy devices are required. In this context, a mesostructured reactor based on an innovative static mixer, NETmix, was tested to produce Pickering emulsions from a previously developed formulation in batch mode. The effect of the number of cycles (2-35) and Reynolds number (200-500), parameters that influence the residence time and the quality of mixing, on the Pickering emulsion properties (average droplet size, droplet morphology, and stability) was studied. The obtained results pointed out the feasibility of using NETmix to produce Pickering emulsions. It is a versatile technique to control in a tailor-made way the droplet size and generate small droplets at short times. Results show a decrease of the droplet size with increasing number of cycles and Reynolds. Under the tested conditions, stable dispersions with droplet size of similar to 7 mu m were produced using 17 cycles and Re = 400. Microscopy images show an oil core and nano-hydroxyapatite shell morphology.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12