Complex emulsions for shape control based on mass transfer and phase separation.,Soft Matter

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Complex emulsions for shape control based on mass transfer and phase separation.
Soft Matter ( IF 2.9 ) Pub Date : 2020-06-09 , DOI: 10.1039/d0sm00862a
Feng Zhang ₁ , Leilei Jiang , Changfeng Zeng , Chongqing Wang , Jun Wang , Xuebin Ke , Lixiong Zhang

Affiliation

Complex emulsions are used to fabricate new morphologies of multiple Janus droplets, evolving from non-engulfing to complete engulfing core/shell configuration. The produced droplets contain an aqueous phase of dextran (DEX) solution and an oil phase, which is mixed with ethoxylated trimethylolpropane triacrylate (ETPTA) and poly(ethylene glycol) diacrylate (PEGDA). The PEGDA in the oil phase is transferred into the aqueous phase to form complex morphologies due to the phase separation of PEGDA and DEX. The effects are investigated including the ratio of oil to aqueous phase, the content of initial PEGDA, DEX and surfactants, and the type of surfactants. DEX/PEGDA–ETPTA core/shell-single phase Janus droplets are formed with an increasing engulfed oil droplet into the aqueous droplet while the ratio of oil to aqueous phase increases or the initial PEGDA content increases. The high DEX content leads to the DEX–PEGDA–ETPTA doublet Janus. The use of surfactants polyglycerol polyricinoleate (PGPR) and Span 80 results in the formation of DEX/PEGDA/ETPTA single core/double shell and DEX/PEGDA–ETPTA core/shell-single phase Janus droplets, respectively. These complex emulsions are utilized to fabricate solid particles of complex shapes. This method contributes to new material design underpinned by mass transfer and phase separation, which can be extended to other complex emulsion systems.

中文翻译：

用于基于传质和相分离的形状控制的复合乳液。

复合乳液被用于制造多个Janus液滴的新形态，从非吞噬演变为完全吞噬核/壳构型。产生的液滴包含右旋糖酐（DEX）的水相和油相，将其与乙氧基化三羟甲基丙烷三丙烯酸酯（ETPTA）和聚（乙二醇）二丙烯酸酯（PEGDA）混合。由于PEGDA和DEX的相分离，油相中的PEGDA被转移到水相中形成复杂的形态。研究了这些影响，包括油与水相的比例，初始PEGDA，DEX和表面活性剂的含量以及表面活性剂的类型。DEX / PEGDA–ETPTA核/壳-单相Janus液滴的形成是随着油滴的吞噬而增加，而油与水相的比例增加或初始PEGDA含量增加。高DEX含量会导致DEX–PEGDA–ETPTA双峰Janus。使用表面活性剂聚甘油聚蓖麻油酸酯（PGPR）和Span 80分别形成DEX / PEGDA / ETPTA单核/双壳和DEX / PEGDA-ETPTA核/壳单相Janus液滴。这些复合乳液被用来制造复杂形状的固体颗粒。这种方法有助于传质和相分离为基础的新材料设计，该设计可以扩展到其他复杂的乳液体系。使用表面活性剂聚甘油聚蓖麻油酸酯（PGPR）和Span 80分别形成DEX / PEGDA / ETPTA单核/双壳和DEX / PEGDA-ETPTA核/壳单相Janus液滴。这些复合乳液被用来制造复杂形状的固体颗粒。这种方法有助于传质和相分离为基础的新材料设计，该设计可以扩展到其他复杂的乳液体系。使用表面活性剂聚甘油聚蓖麻油酸酯（PGPR）和Span 80分别形成DEX / PEGDA / ETPTA单核/双壳和DEX / PEGDA-ETPTA核/壳单相Janus液滴。这些复合乳液被用来制造复杂形状的固体颗粒。这种方法有助于传质和相分离为基础的新材料设计，该设计可以扩展到其他复杂的乳液体系。

更新日期：2020-07-01

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