简介:Controlling Pore Size and Wettability of a Unique Microheterogeneous Copolymer Film with Porous Structure
We have fabricated a mesoporous copolymer thin film whose surface pore size can be varied from
submicrometer t简介:Controlling Pore Size and Wettability of a Unique Microheterogeneous Copolymer Film with Porous Structure
We have fabricated a mesoporous copolymer thin film whose surface pore size can be varied from
submicrometer to micrometer. Our fabrication method requires microphase separation induced by a silicone
surfactant during the rapid solvent evaporation and polymerizations. The sample films were characterized
with atomic force microscopy (AFM), confocalRamanspectroscopy, X-ray photoelectron spectroscopy (XPS),
in situ infrared (IR), attenuated total reflection (ATR), and other techniques. The characterization results
show that the pore size can be controlled by altering the concentration of silicone surfactant. Furthermore,
the mesoporous copolymer film with hydrophobic convex and hydrophilic concave structure exhibits both
hydrophobic and oleophobic properties. The unique properties can be attributed to the special heterogeneous
porous structure of the polymer film. The resulting porous polymer films can be utilized in many fields,
such as self-cleaning, antiadhesives, adsorption, and separation. These mesoscale-patterned surfaces can
also provide a model system for investigating the interface properties of actual surfaces.
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