Investigation and preparation of PFOTS-modified anti-smudge surface by electrospinning
Date Issued
2014
Date
2014
Author(s)
Jhan, Yi-Ting
Abstract
In order to obtain the omniphobic surface, electrospinning has been use to fabricate polyvinyl alcohol (Polyvinyl alcohol, PVA) fibrous structure and by using different concentration of perfluorinated silane (1H,1H,2H,2H-Perfluorooctyltrichlorosilane, PFOTS) to lower the surface energy. In contact angle analysis, as PFOTS concentration increased to 11.7 mM, the contact angle hysteresis of oil decrease to 13 ° and contact angle increase to 127 °. For water, the contact angle hysteresis decrease to 1 °and the contact angle increase to 146 °. By using SEM to observe the surface morphology of the sample. We found the Cauliflower-like secondary structure fills the gaps between the fibers when the concentration increase to 11.7 mM. The structures will prevent infiltration of liquid to achieve ultra-low contact angle hysteresis. The relation between contact angle and contact angle hysteresis has been modeled by experiment and simulation. In addition, the easy-cleaning surface without surface texture has been obtained by fluorination of glass. In contact angle analysis, the water / oil contact angle hysteresis can be maintained at below 20 °. It will be close to the needs of commercial products with its transparency and durability.
Subjects
靜電紡絲
抗污材料
矽烷化
超雙疏
接觸角
Type
thesis
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