Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 566, Issue -, Pages 338-346Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2020.01.053
Keywords
Elastic; Porous materials; PDMS; High internal phase emulsion; Oil-water separation
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Funding
- National Key Research and Development Program of China [2017YFA0204600]
- National Natural Science Foundation of China [51721002, 51673045]
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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 POM5. Furthermore. oil-water separation behavior of the POM5 is studied. Both the absorbent capacity and speed are considerably superior to the previously reported PDMS sponges. (C) 2020 Elsevier Inc. All rights reserved.
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