Adaptive Structured Pickering Emulsions and Porous Materials Based on Cellulose Nanocrystal Surfactants

Angewandte Chemie
Yanan LiThomas P Russell

Abstract

Taking advantage of the formation and assembly of cellulose nanocrystal surfactants (CNCSs) at the water-oil interface, where polar cellulose nanocrystals (CNCs) and end-functionalized polymer chains interact, the preparation and stability of emulsions prepared with CNCSs were investigated. The packing density of CNCSs at the interface can be adjusted by tuning parameters such as pH, ionic strength, and concentration/molecular weight of the end-functionalized polymer ligands. Stable non-spherical emulsions are obtained during homogenization, as a result of the interfacial jamming of CNCSs, with pH-triggered reconfigurability. Porous materials are prepared by freeze-drying creamed, CNCS-stabilized emulsions. The cells of the porous materials have a controlled pore size and shape that are commensurate with the droplets in the emulsion and are responsive to pH. The behavior of the adaptive, reconfigurable supracolloidal system is coupled to its internal and surrounding environment.

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Citations

Aug 1, 2019·Biomaterials Science·Anastasiia KashirinaJinsong Leng
Aug 17, 2020·Advanced Materials·Stephanie A KedziorEmily D Cranston
Apr 16, 2020·Advanced Biosystems·Jie WangYuanjin Zhao
Mar 30, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Yeong Sik ChoJin Woong Kim
May 11, 2021·Carbohydrate Polymers·Hui DongWenjia Han
Jun 14, 2021·Journal of Colloid and Interface Science·Zhaohui HuangJingcheng Hao
May 29, 2021·Angewandte Chemie·Lianshun LiShaowei Shi
Oct 24, 2021·Angewandte Chemie·Shuyi SunShaowei Shi

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