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Paraffin oil based soft-template approach to fabricate reusable porous PDMS sponge for effective oil/water separation.

08:00 EDT 1st August 2019 | BioPortfolio

Summary of "Paraffin oil based soft-template approach to fabricate reusable porous PDMS sponge for effective oil/water separation."

Three-dimensional porous material holds enormous potential in the field of life science and environmental protection. In this work, we proposed a facile route for large-scale synthesis of porous PDMS sponge via paraffin oil based emulsion technique. Stable emulsion could be formed by emulsifying water in PDMS solution with the aid of paraffin oil. Moreover, the amount of emulsified water of 5 g PDMS solution is as high as 35 g, and the skeleton of the prepared PDMS sponge still is intact. This method is cost-effective, rapid, and easily scaled-up. The water contact angle of the obtained PDMS sponge is 141.9 ± 1°, and the absorption capacities of the sponges are 13.5-33.3 g/g for various organic solvents. The PDMS sponge only needed 0.069 MPa force to realize the compression ratio of 90%, and it still maintained intact after over 50 cycles of compression. In addition, the porous PDMS sponge exhibited excellent oil absorption and outstanding reusability, which was potentially useful in water purification.

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This article was published in the following journal.

Name: Langmuir : the ACS journal of surfaces and colloids
ISSN: 1520-5827
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