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Updated: Dec 29, 2025
Improved Polydimethylsiloxane (PDMS) Double Casting via Silicone Oil Treatment for Densely Packed Microstructure Replication
Published on: July 18, 2025
Robust porous organosilica monoliths via a surfactant-free high internal phase emulsion process for efficient
Shuhua Tu1, Min Chen1, Limin Wu1
1Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Advanced Coatings Research Center of Ministry of Education of China, Fudan University, Shanghai 200433, China.
Abstract:
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.
