Colloidosomes formation by controlling the solvent extraction from particle-stabilized emulsions
Publication in refereed journal

香港中文大學研究人員

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摘要Colloidosomes with porous shells have attracted attention in recent years because of the great potential as vehicles for controlled delivery of active ingredients. We present herein a simple and flexible method to prepare colloidosomes by a combination of particle-stabilized emulsion and solvent extraction method. We first generate an oil-in-water (o/w) emulsion where the dispersed phase is slightly soluble in the continuous phase and contains a water-insoluble polymer. Polystyrene particles, suspended in the dispersed phase, absorb onto the surface of oil droplet to stabilize the emulsions. The particles at the interface eventually become the shell of colloidosome microcapsules upon the removal of the oil by solvent-mediated diffusion. In addition, during the oil removal, the dissolved water-insoluble polymer likely deposits at the interface and binds the assembled polystyrene particles together, in turn leading to mechanical stable colloidosomes. We demonstrate that the size and morphology of the resultant colloidosome microcapsules depend on the type of the solvent and the oil extraction rate. (C) 2011 Elsevier B.V. All rights reserved.
著者Ao Z, Li ZF, Zhang GZ, Ngai T
期刊名稱Colloids and Surfaces A: Physicochemical and Engineering Aspects
出版年份2011
月份7
日期5
卷號384
期次1-3
出版社ELSEVIER SCIENCE BV
頁次592 - 596
國際標準期刊號0927-7757
電子國際標準期刊號1873-4359
語言英式英語
關鍵詞Colloidal particles; Colloidosomes; Emulsion; Particle-stabilized emulsion
Web of Science 學科類別Chemistry; Chemistry, Physical; CHEMISTRY, PHYSICAL

上次更新時間 2021-25-01 於 23:49