- Volume 40 Issue 8
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Hydrophobic and Hydrophilic PDMS Sponges Prepared Through Physicochemical Treatments
물리화학적 처리에 따른 PDMS 특성 조절
- Received : 2016.03.05
- Accepted : 2016.06.08
- Published : 2016.08.01
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
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Supported by : 한국연구재단