Palm olein-in-water Pickering emulsion stabilized by Fe3O4-cellulose nanocrystal nanocomposites and their responses to pH

Liang Ee Low, Beng Ti Tey, Boon Hoong Ong, Eng Seng Chan, Siah Ying Tang

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    64 Citations (Scopus)


    We studied the formation of palm olein-in-water (O/W) Pickering emulsion stabilized by Fe3O4-cellulose nanocrystals (MCNC) nanocomposites obtained by ultrasound assisted in-situ co-precipitation method. The synthesized MCNC nanocomposites successfully stabilized Pickering emulsion with dual responses. The magnetic tests revealed a direct-relation between attractability of MCNC-stabilized Pickering emulsions and the emulsion droplet diameter. The Pickering emulsions were stable under pH ranging from 3 to 6. The stability substantially reduced around pH 8–10, and regained slowly when approaching pH 13. From microscopic and mastersizer analysis, monodisperse emulsion droplets were noticed at pH 3–6, and 13, while polydisperse emulsion were obtained at pH 8–12. The Pickering emulsions prepared at pH 6 are stable up to 14 days, while Pickering emulsions at pH 8 experienced coalescence. In this study, the dual stimuli-responsive Pickering emulsion stabilized by MCNC may hold potentials for biomedical and drug delivery as new generation of smart nanotherapeutic carrier.

    Original languageEnglish
    Pages (from-to)391-399
    Number of pages9
    JournalCarbohydrate Polymers
    Publication statusPublished - 2 Jan 2017


    • Emulsifier
    • FeO-CNC nanocomposite
    • Magnetic responstive
    • Palm olein
    • pH responsive
    • Pickering emulsion

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