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Robust porous organosilica monoliths via a surfactant-free high internal phase emulsion process for efficient oil-water separation.
Journal of Colloid and Interface Science ( IF 9.9 ) Pub Date : 2020-01-17 , DOI: 10.1016/j.jcis.2020.01.053
Shuhua Tu 1 , Min Chen 1 , Limin Wu 1
Affiliation  

Elastic porous organosilica monoliths (POMs) are successfully prepared by water in oil (w/o) high internal phase emulsions (HIPEs) with a novel silica precursor named polyethoxysiloxane (PEOS) as sole stabilizer. The stability of the HIPEs and the mechanical strength of the POMs are investigated as functions of PEOS and crosslinker contents in the oil phase. FESEM reveals that PEOS molecules play a significant role of in-situ growth into silica particles to strengthen the POMs, which enables the successful preparation of elastic POMs. Furthermore, oil-water separation behavior of the POMs is studied. Both the absorbent capacity and speed are considerably superior to the previously reported PDMS sponges.

中文翻译:

通过无表面活性剂的高内相乳液工艺获得坚固的多孔有机硅整体料,可实现有效的油水分离。

弹性多孔有机二氧化硅整体材料(POM)是通过油包水(w / o)高内相乳液(HIPEs)成功地制备的,其中一种新型的二氧化硅前体名为聚乙氧基硅氧烷(PEOS)作为唯一稳定剂。研究了HIPE的稳定性和POM的机械强度与油相中PEOS和交联剂含量的关系。FESEM显示,PEOS分子在原位生长为二氧化硅颗粒以增强POM方面起着重要作用,这使得成功制备弹性POM成为可能。此外,研究了POM的油水分离行为。吸收能力和速度都大大优于先前报道的PDMS海绵。
更新日期:2020-01-17
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