Enhanced emulsifying properties of wood-based cellulose nanocrystals as Pickering emulsion stabilizer

Carbohydrate Polymers
Xiaoyu GongLingyun Chen

Abstract

Cellulose nanocrystals are hydrophilic nanomaterials, which limits their applications as interfacial compounds. Herein, we propose using modified wood-based cellulose nanocrystals as Pickering emulsion stabilizer. Wood cellulose was consecutively oxidized and modified with phenyltrimethylammonium chloride to create hydrophobic domains comprised of phenyl groups. These modified oxidized cellulose nanocrystals (m-O-CNCs) were homogeneous/electrostatically stable in water and they can stabilize O/W Pickering emulsions. The dispersed phase volume fraction (DPVF) of the Pickering emulsion was 0.7 at around 1.5g/L, whereas the tween-20 control needed a 13-fold greater concentration to have a similar DPVR. In addition, these m-O-CNC stabilized Pickering emulsions also showed good mechanical and thermal stability against centrifugation and heat, as well as size controllability. In terms of stability, size controllability, surfactant-free status, these m-O-CNCs possess superior and enhanced emulsifying properties. Future research for these new interfacial materials have potential in applications, for personal care, cosmetic and pharmaceutic industries.

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Citations

Jul 18, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Lijuan ChenWen Shen
Jul 20, 2019·Journal of Biomaterials Science. Polymer Edition·Rafaella S S ZanetteMichele Munk
Oct 24, 2020·Chemical Communications : Chem Comm·Shengnan TaoTo Ngai
Mar 6, 2021·Journal of Nanobiotechnology·Xiaoming GuoTianfeng Chen
Apr 12, 2021·Carbohydrate Polymers·Yanxue SiRuitao Cha
Apr 20, 2021·Advanced Materials·Mei-Chun LiMichael J Bortner
Jul 7, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Sofia NapsoYachin Cohen
Sep 28, 2021·Journal of Agricultural and Food Chemistry·Di WuHongshan Liang

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