Title of article :
Superhydrophobic film fabricated by controlled microphase separation of PEO–PLA mixture and its transparence property
Author/Authors :
Pihui Pi، نويسنده , , Wei Mu، نويسنده , , George Fei، نويسنده , , Yulin Deng، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2013
Pages :
8
From page :
184
To page :
191
Abstract :
Instead of block copolymers that have been widely used in controlling thin film morphology, a mixture of two homopolymers has been used in this study to create desired nano- to microporous structure. By further modifying the nano-sized porous structured surface, a superhydrophobic surface was obtained. Experimentally, a chloroform solution containing a mixture of polylactic acid (PLA) and polyethylene oxide (PEO) was first coated on glass slides. Because of the dissimilarity of PLA and PEO, a microphase separation happened and the PEO formed microdomains in the coating layer during the film drying. Because PEO is water soluble but PLA is water-insoluble, the PEO microdomains could be washed out with water but PLA remained, resulted in a porous and rough PLA film. By two or three layer coating and washing, nano-sized roughness was obtained. A thin layer of fluorinated acrylic resin was further deposited on the rough surface. Because of the synergistic effect of surface roughness and hydrophobic, a superhydrophobicicity layer was obtained.
Keywords :
Superhydrophobic , phase separation , Microdomain , Transparent , Coating
Journal title :
Applied Surface Science
Serial Year :
2013
Journal title :
Applied Surface Science
Record number :
1006946
Link To Document :
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