Inverse Pickering Emulsions Stabilized by Cinnamate Modified Cellulose Nanocrystals as Templates To Prepare Silica Colloidosomes,ACS Sustainable Chemistry & Engineering

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Inverse Pickering Emulsions Stabilized by Cinnamate Modified Cellulose Nanocrystals as Templates To Prepare Silica Colloidosomes
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-01-11 00:00:00 , DOI: 10.1021/acssuschemeng.7b04061
Zhen Zhang _{1,

2} , Kam C. Tam ₃ , Xiaosong Wang ₁ , Gilles Sèbe _{2,

4}

Affiliation

A facile method to prepare colloidosomes at room temperature from inverse water-in-oil (w/o) Pickering emulsions containing silica precursors and stabilized by cinnamate modified cellulose nanocrystals (Cin-CNC) is proposed. Cin-CNC Pickering emulsifiers were prepared by acylation with an excess of cinnamoyl chloride. The Cin-CNC surface displayed partial wettability with both toluene and water, which allowed the stabilization of w/o inverse Pickering emulsions. The Cin-CNC particles around the droplets were subsequently locked by cross-linking TEOS or TBOS silica precursors at the water/toluene interface, leading to an intricate network of polysiloxane within the Cin-CNC shell. In optimized conditions, the Cin-CNC/silica colloidosomes obtained displayed a robust and compact shell, which ensured a long-term encapsulation of rhodamine B or biological molecules such as fluorescent deoxyribonucleic acid (DNA).

中文翻译：

以肉桂酸酯修饰的纤维素纳米晶体为模板制备硅胶胶体的稳定反萃取液

提出了一种在室温下由含硅前体的反相油包水（w / o）Pickering乳液制备并通过肉桂酸酯修饰的纤维素纳米晶体（Cin-CNC）稳定化的简便方法。通过用过量的肉桂酰氯酰化制备Cin-CNC Pickering乳化剂。Cin-CNC表面显示出对甲苯和水的部分润湿性，从而使反水Pickering乳液稳定。液滴周围的Cin-CNC颗粒随后通过在水/甲苯界面处交联TEOS或TBOS二氧化硅前体而被锁定，从而在Cin-CNC壳内形成复杂的聚硅氧烷网络。在最佳条件下，获得的Cin-CNC /二氧化硅胶体显示出坚固而紧凑的外壳，

更新日期：2018-01-11

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