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Hydrophobic and Hydrophilic PDMS Sponges Prepared Through Physicochemical Treatments
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 Title & Authors
Hydrophobic and Hydrophilic PDMS Sponges Prepared Through Physicochemical Treatments
Nam, Kyungmok; Park, Sungmin; Kim, Jonghun; Yoon, Sang-Hee;
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An elastomer (especially PDMS) sponge is considered to be a promising selective absorber in cleaning up oil spills. The performance of a PDMS sponge in capturing and separating oil from (sea) water depends on several parameters such as surface roughness, physicochemical treatments, and hydrostatic stability. Here, we first present a method of fabricating the PDMS sponges having numerous micro-sized pores that act as absorption and storage spaces for the target material, and then we report an experimental effort undertaken to control the surface physicochemistry (i.e., hydrophobicity or hydrophilicity) of the PDMS sponges by adjusting the size of the pores and the concentration of the surfactant (i.e., silwet L-77). From the experimental results, we develop an in-depth understanding of the mechanism for controlling the surface physicochemistry of PDMS using water-soluble micro-sized particles and a surfactant. The surface energy and absorbing behavior of the PDMS sponges are also extensively discussed.
PDMS;Physicochemical Treatment;Hydrophobicity;Hydrophilicity;Contact Angle;
 Cited by
Kathryn, H., Tracy, D. and David, B., 2006, "PDMS Bonding by Means of a Portable, Low-cost Corona System," Lab Chip, Vol. 6, p. 1549.

Jonathan, A. V., Meghan M. C. and Charles, S. H., 2006, "Generation of Hydrophilic Poly (dimethylsiloxane) for High-performance Microchip Electrophoresis," Analytical Chemistry, Vol. 78, No. 21, pp. 7446-7452. crossref(new window)

Jeonggi, S. and Luke, P. L., 2006, "Effects on Wettability by Surfactant Accumulation/depletion in Bulk Polydimethylsiloxane (PDMS)," Sensors and Actuators B , Vol. 119, No. 1, pp. 192-198. crossref(new window)

Zhou, H., Wang, H., Niu, H. and Lin, T., 2013, "Superphobicity/philicity Janus Fabrics with Switchable, Spontaneous, Directional Transport Ability to Water and Oil Fluids," Scientific Reports, Vol. 3, No. 2964. crossref(new window)

Nam, G. M., Kim, J. H., Park, S. M. and Yoon, S.-H., 2015, "Physicochemical Control of PDMS Contact Angle for the Development of Oily/watery Selective Absorbents," Proc. of KSPE 2015 Spring Conference. Jeju, Korea, pp. 713-714.

Kim, H. T., Kim, J. K. and Jeong, O. C., 2011, "Hydrophilicity of Surfactant-Added Poly (dimethylsiloxane) and Its Applications," The Japan Society of Applied Physics, Vol. 50, No. 6S, 06GL04. crossref(new window)

Robert, N. W., 1949, "Surface Roughness and Contact Angle," J. Phys. Chem, Vol. 53, No. 9, pp. 1466-1467. crossref(new window)