| Autor: |
Niu, Xun, Wan, Zhangmin, Mhatre, Sameer E., Ye, Yuhang, Lu, Yi, Gao, Guang, Bai, Long, Rojas, Orlando J. |
| Zdroj: |
ACS Nano; December 2023, Vol. 17 Issue: 24 p25542-25551, 10p |
| Abstrakt: |
Interfacial assemblies formed by colloidal complexation are effective in multiphase stabilization, as shown in structured liquids and Pickering emulgels. Herein, we demonstrate a type of biobased colloidal system that spontaneously stabilizes an organic phase in a continuous hydrogel phase. Specifically, a triterpene extracted from bark (betulin, BE) is added to an organic phase containing a coniferous resin (rosin acid, a diterpene). BE is shown to take part in strong noncovalent interactions with the nanochitin dispersed in the aqueous (hydrogel) phase, leading to a complex of high interfacial activity. The viscoelastic response of the system is rationalized by the presence of a superstable structured dual network. When used as a templating material, the emulgel develops into structured liquids and cryogels. The herein introduced all-biobased type of nanoparticle surfactant system forms a gel (“emulsion-filled” with “aggregated droplets”) that features the functional benefits of both betulin and nanochitin. |
| Databáze: |
Supplemental Index |
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